 
                 CPC
 CPC
                     C22B23/026
 C22B23/026
                     Intevep, S.A.
                                    Intevep, S.A.
                                 Matthew Stephen Grimley
                                    Matthew Stephen Grimley
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 ENI S.p.A.
                                    ENI S.p.A.
                                 Andrea  Bartolini
                                    Andrea  Bartolini
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Total Raffinage Marketing
                                    Total Raffinage Marketing
                                 Delphine  Gotteland
                                    Delphine  Gotteland
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Grupo Petrotemex, S.A. de C.V.
                                    Grupo Petrotemex, S.A. de C.V.
                                 Zhufang  Liu
                                    Zhufang  Liu
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Research Institute of Industrial Science & Technology
                                    Research Institute of Industrial Science & Technology
                                 Jae Young Lee
                                    Jae Young Lee
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Umlcore
                                    Umlcore
                                 Karel  Verscheure
                                    Karel  Verscheure
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Chevron U.S.A. Inc.
                                    Chevron U.S.A. Inc.
                                 Rahul Shankar Bhaduri
                                    Rahul Shankar Bhaduri
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Intevep, S.A.
                                    Intevep, S.A.
                                 Carlos  Canelon
                                    Carlos  Canelon
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Grupo Petrotemex, S.A. de C.V.
                                    Grupo Petrotemex, S.A. de C.V.
                                 Zhufang  Liu
                                    Zhufang  Liu
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Sumitomo Chemical Company, Limited
                                    Sumitomo Chemical Company, Limited
                                 Hirotsugu  Kano
                                    Hirotsugu  Kano
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Intevep, S.A.
                                    Intevep, S.A.
                                 Luis Felipe  D'Elia
                                    Luis Felipe  D'Elia
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Tanaka Holdings Co., Ltd
                                    Tanaka Holdings Co., Ltd
                                 Toshiya  Yamamoto
                                    Toshiya  Yamamoto
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Crisolteq Oy
                                    Crisolteq Oy
                                 Kenneth  Ekman
                                    Kenneth  Ekman
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Metals Recovery Technology Inc.
                                    Metals Recovery Technology Inc.
                                 Joseph L.  Thomas
                                    Joseph L.  Thomas
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Albemarle Netherlands B.V.
                                    Albemarle Netherlands B.V.
                                 Bob Gerardus  Oogjen
                                    Bob Gerardus  Oogjen
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 ExxonMobil Research and Engineering Company
                                    ExxonMobil Research and Engineering Company
                                 Charles H.  Mauldin
                                    Charles H.  Mauldin
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Metal Conversion Technologies, LLC
                                    Metal Conversion Technologies, LLC
                                 John A.  Patterson
                                    John A.  Patterson
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Paul Wurth S.A.
                                    Paul Wurth S.A.
                                 Jean-Luc  Roth
                                    Jean-Luc  Roth
                                 C21 - METALLURGY OF IRON
                                    C21 - METALLURGY OF IRON
                                 ExxonMobil Chemical Patents Inc.
                                    ExxonMobil Chemical Patents Inc.
                                 Eddy T. A.  Van Driessche
                                    Eddy T. A.  Van Driessche
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Chevron U.S.A. Inc.
                                    Chevron U.S.A. Inc.
                                 Rahul S.  Bhaduri
                                    Rahul S.  Bhaduri
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Chevron U.S.A. Inc.
                                    Chevron U.S.A. Inc.
                                 Jose Guitian  Lopez
                                    Jose Guitian  Lopez
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Chevron U.S.A. Inc.
                                    Chevron U.S.A. Inc.
                                 Bruce E.  Reynolds
                                    Bruce E.  Reynolds
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Johnson Matthey PLC
                                    Johnson Matthey PLC
                                 Mark  McKenna
                                    Mark  McKenna
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Chevron U.S.A. Inc.
                                    Chevron U.S.A. Inc.
                                 Christopher A.  Powers
                                    Christopher A.  Powers
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Metals Recovery Technology Inc.
                                    Metals Recovery Technology Inc.
                                 Joseph L.  Thomas
                                    Joseph L.  Thomas
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Chevron U.S.A. Inc.
                                    Chevron U.S.A. Inc.
                                 Bruce E.  Reynolds
                                    Bruce E.  Reynolds
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Eastman Chemical Company
                                    Eastman Chemical Company
                                 Zhufang  Liu
                                    Zhufang  Liu
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Mechema Chemicals International Corp.
                                    Mechema Chemicals International Corp.
                                 David  Yen
                                    David  Yen
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 World Resources Company
                                    World Resources Company
                                 Peter T.  Halpin
                                    Peter T.  Halpin
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 World Resources Company
                                    World Resources Company
                                 Peter T. Halpin
                                    Peter T. Halpin
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Techemet, LP
                                    Techemet, LP
                                 Edward W. Albrecht
                                    Edward W. Albrecht
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Qianqian  LIU
                                    Qianqian  LIU
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 TOTAL RAFFINAGE MARKETING
                                    TOTAL RAFFINAGE MARKETING
                                 Delphine  Gotteland
                                    Delphine  Gotteland
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Intevep, S.A.
                                    Intevep, S.A.
                                 Matthew Stephen Grimley
                                    Matthew Stephen Grimley
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 METALS RECOVERY TECHNOLOGY INC.
                                    METALS RECOVERY TECHNOLOGY INC.
                                 JOSEPH L. THOMAS
                                    JOSEPH L. THOMAS
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 ENI S.p.A.
                                    ENI S.p.A.
                                 Andrea  Bartolini
                                    Andrea  Bartolini
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 GRUPO PETROTEMEX, S.A. DE C.V.
                                    GRUPO PETROTEMEX, S.A. DE C.V.
                                 Zhufang  LIU
                                    Zhufang  LIU
                                 C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
                                    C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
                                 Karel  Verscheure
                                    Karel  Verscheure
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Shun Myung  SHIN
                                    Shun Myung  SHIN
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Chevron Corporation
                                    Chevron Corporation
                                 Rahul Shankar  Bhaduri
                                    Rahul Shankar  Bhaduri
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 METAL CONVERSION TECHNOLOGIES, LLC
                                    METAL CONVERSION TECHNOLOGIES, LLC
                                 John A.  PATTERSON
                                    John A.  PATTERSON
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 TANAKA HOLDINGS CO., LTD.
                                    TANAKA HOLDINGS CO., LTD.
                                 Toshiya  Yamamoto
                                    Toshiya  Yamamoto
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Intevep, S.A.
                                    Intevep, S.A.
                                 Carlos  Canelon
                                    Carlos  Canelon
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Takahiro  Shiokawa
                                    Takahiro  Shiokawa
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Research Instituke of Industrial Science & Technology
                                    Research Instituke of Industrial Science & Technology
                                 Jae Young  Lee
                                    Jae Young  Lee
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Sumitomo Chemical Company, Limited
                                    Sumitomo Chemical Company, Limited
                                 Hirotsugu  KANO
                                    Hirotsugu  KANO
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Eddy T.A.  Van Driessche
                                    Eddy T.A.  Van Driessche
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 CrisolteQ Oy
                                    CrisolteQ Oy
                                 Kenneth  Ekman
                                    Kenneth  Ekman
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 PAUL WURTH S.A.
                                    PAUL WURTH S.A.
                                 Jean-Luc  Roth
                                    Jean-Luc  Roth
                                 C21 - METALLURGY OF IRON
                                    C21 - METALLURGY OF IRON
                                 METALS RECOVERY TECHNOLOGY INC.
                                    METALS RECOVERY TECHNOLOGY INC.
                                 JOSEPH L.  THOMAS
                                    JOSEPH L.  THOMAS
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Intevep, S.A.
                                    Intevep, S.A.
                                 Luis Felipe  D'Elia
                                    Luis Felipe  D'Elia
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 H.C. Starck GmbH
                                    H.C. Starck GmbH
                                 Armin  Olbrich
                                    Armin  Olbrich
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Charles H.  Mauldin
                                    Charles H.  Mauldin
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Chevron U.S.A. Inc.
                                    Chevron U.S.A. Inc.
                                 Christopher A.  Powers
                                    Christopher A.  Powers
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Chevron U.S.A. Inc.
                                    Chevron U.S.A. Inc.
                                 Jose Guitian  Lopez
                                    Jose Guitian  Lopez
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Chevron U.S.A. Inc.
                                    Chevron U.S.A. Inc.
                                 Rahul S.  Bhaduri
                                    Rahul S.  Bhaduri
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 John A.  PATTERSON
                                    John A.  PATTERSON
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Joseph L.  Thomas
                                    Joseph L.  Thomas
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Johnson Matthey Public Limited Company
                                    Johnson Matthey Public Limited Company
                                 Mark  McKenna
                                    Mark  McKenna
                                 C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                    C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
                                 Eastman Chemical Company
                                    Eastman Chemical Company
                                 Zhufang  Liu
                                    Zhufang  Liu
                                 C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
                                    C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...