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Walter Schafer
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D 5090 Leverkusen, Bayerwerk, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Double metal cyanide catalysts for producing polyether polyols
Patent number
7,008,900
Issue date
Mar 7, 2006
Bayer Aktiengesellschaft
Jörg Hofmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Double metal cyanide catalysts for preparing polyether polyols
Patent number
6,953,765
Issue date
Oct 11, 2005
Bayer Aktiengesellschaft
Pieter Ooms
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Bimetallic-cyanide catalysts used for preparing polyether polyols
Patent number
6,878,661
Issue date
Apr 12, 2005
Bsyer Aktiengesellschaft
Pieter Ooms
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Double-metal cyanide catalysts for preparing polyether polyols
Patent number
6,852,663
Issue date
Feb 8, 2005
Bayer Aktiengesellschaft
Pieter Ooms
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Double-metal cyanide catalysts for preparing polyether polyols
Patent number
6,833,431
Issue date
Dec 21, 2004
Bayer Aktiengesellschaft
Jörg Hofmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Double-metal cyanide catalysts for preparing polyether polyols
Patent number
6,818,587
Issue date
Nov 16, 2004
Bayer Aktiengesellschaft
Walter Schäfer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Aliphatic polycarbonate homo-and co-polymers produced by DMC cataly...
Patent number
6,806,345
Issue date
Oct 19, 2004
Bayer Aktiengesellschaft
Jörg Hofmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Aliphatic polycarbonate homo-and co-polymers produced by DMC cataly...
Patent number
6,646,100
Issue date
Nov 11, 2003
Bayer Aktiengesellschaft
Jörg Hofmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Double-metal cyanide catalysts containing polyester for preparing p...
Patent number
6,624,286
Issue date
Sep 23, 2003
Bayer Aktiengesellschaft
Jörg Hofmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Double-metal cyanide catalysts for preparing polyether polyols
Patent number
6,586,564
Issue date
Jul 1, 2003
Bayer Aktiengesellschaft
Walter Schäfer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Double metal cyanide catalysts for producing polyether polyols
Patent number
6,586,566
Issue date
Jul 1, 2003
Bayer Aktiengesellschaft
Jörg Hofmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Crystallizing polyether polyols, a method for producing them and us...
Patent number
6,569,981
Issue date
May 27, 2003
Bayer Aktiengesellschaft
Walter Schäfer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for producing partially crystalline polyether polyols
Patent number
6,458,918
Issue date
Oct 1, 2002
Bayer Aktiengesellschaft
Walter Schäfer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Bi-metallic-cyanide catalysts used for preparing polyether polyols
Patent number
6,391,820
Issue date
May 21, 2002
Bayer Aktiengesellschaft
Pieter Ooms
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Imparting water-repellency with polysiloxanes containing carboxyl g...
Patent number
6,379,751
Issue date
Apr 30, 2002
Bayer Aktiengesellschaft
Walter Schäfer
C14 - SKINS HIDES PELTS LEATHER
Information
Patent Grant
Crystalline double metal cyanide catalysts for producing polyether...
Patent number
6,323,375
Issue date
Nov 27, 2001
Bayer Aktiengesellschaft
Jörg Hofmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Double metal cyanide catalysts for producing polyether polyols
Patent number
6,291,388
Issue date
Sep 18, 2001
Bayer Aktiengesellschaft
Jörg Hofmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Zinc/metal hexacyanocobaltate complex compounds, a process for thei...
Patent number
5,998,327
Issue date
Dec 7, 1999
Bayer Aktiengesellschaft
Jorg Hofmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyisocyanate-modified polycarboxylic acids and their use as cross...
Patent number
5,959,060
Issue date
Sep 28, 1999
Bayer Aktiengesellschaft
Walter Schafer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Powder coating composition and its use for the preparation of matte...
Patent number
5,786,419
Issue date
Jul 28, 1998
Bayer Aktiengesellschaft
Hans-Ulrich Meier-Westhues
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Use of tertiary aliphatic monocarboxylic acids as chain terminators...
Patent number
5,633,339
Issue date
May 27, 1997
Bayer Aktiengesellschaft
Burkhard K ohler
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyisocyanate-modified dicarboxylic (poly) anhydrides
Patent number
5,534,601
Issue date
Jul 9, 1996
Bayer Aktiengesellschaft
Knud Reuter
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for the production of compounds containing aldimine or keti...
Patent number
5,312,962
Issue date
May 17, 1994
Bayer Aktiengesellschaft
Walter Schafer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Dye acceptor element for thermosublimation printing
Patent number
5,310,719
Issue date
May 10, 1994
Agfa Gevaert AG
Rolf Wehrmann
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Compositions of cyclic isourea component with carboxyl component
Patent number
5,292,807
Issue date
Mar 8, 1994
Bayer Aktiengesellschaft
Walter Schafer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Alkoxysilylamines as curing agents for plastics precursors containi...
Patent number
5,242,978
Issue date
Sep 7, 1993
Bayer Aktiengesellschaft
Walter Schafer
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Polyurethane-based reactive adhesives in which the isocyanate is st...
Patent number
5,104,959
Issue date
Apr 14, 1992
Bayer Aktiengesellschaft
Heinrich Hess
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Blends of polyarylene sulfides, epoxides, glass fibers, optionally...
Patent number
5,064,884
Issue date
Nov 12, 1991
Burkhard Kohler
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Binder combinations and a process for the production of flat materials
Patent number
4,945,137
Issue date
Jul 31, 1990
Bayer Aktiengesellschaft
Walter Schafer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Isocyanato-acylurethanes, a process for their preparation and their...
Patent number
4,921,996
Issue date
May 1, 1990
Bayer Aktiengesellschaft
Walter Schafer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Information
Patent Application
Aliphatic polycarbonate homo-and co-polymers produced by DMC cataly...
Publication number
20040044174
Publication date
Mar 4, 2004
Jorg Hofmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Double-metal cyanide catalysts for preparing polyether polyols
Publication number
20030204045
Publication date
Oct 30, 2003
Jorg Hofmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Double-metal cyanide catalysts for preparing polyether polyols
Publication number
20030119663
Publication date
Jun 26, 2003
Pieter Ooms
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Double-metal cyanide catalysts for preparing polyether polyols
Publication number
20030050186
Publication date
Mar 13, 2003
Walter Schafer
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Double-metal cyanide catalysts for preparing polyether polyols
Publication number
20030050187
Publication date
Mar 13, 2003
Walter Schafer
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Aliphatic polycarbonate homo-and co-polymers produced by DMC cataly...
Publication number
20030032761
Publication date
Feb 13, 2003
Jorg Hofmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Double metal cyanide catalysts for preparing polyether polyols
Publication number
20020198099
Publication date
Dec 26, 2002
Pieter Ooms
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Double-metal cyanide catalysts containing polyester for preparing p...
Publication number
20020068812
Publication date
Jun 6, 2002
Jorg Hofmann
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL