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Industry

CPC
D21H23/14

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Parent Industries

DTEXTILES PAPER D21Papermaking D21HPULP COMPOSITIONS PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D IMPREGNATING OR COATING OF PAPER TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G PAPER NOT OTHERWISE PROVIDED FOR D21H23/00Processes or apparatus for adding material to the pulp or to the paper

Current Industry

D21H23/14by selecting point of addition or time of contact between components

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Dosing of nanocellulose suspension in gel phase
- Patent number 11,578,463
- Issue date Feb 14, 2023
- Stora Enso Oyj
- Esa Saukkonen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of manufacturing a toilet paper
- Patent number 10,731,299
- Issue date Aug 4, 2020
- Daio Paper Corporation
- Takahisa Koroki
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for forming a composite comprising MFC and a composite produ...
- Patent number 10,683,616
- Issue date Jun 16, 2020
- Stora Enso Oyj
- Philip Håkansson
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Polymer for pitch and stickies deposition control in papermaking
- Patent number 10,519,602
- Issue date Dec 31, 2019
- Ecolab USA Inc.
- Xiaojin Harry Li
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Wet end chemicals for dry end strength in paper
- Patent number 9,951,475
- Issue date Apr 24, 2018
- Ecolab USA Inc.
- Weiguo Cheng
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for the manufacture of paper and paperboard
- Patent number 9,631,319
- Issue date Apr 25, 2017
- BASF SE
- Christopher Alan Gray
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Wet end chemicals for dry end strength in paper
- Patent number 9,567,708
- Issue date Feb 14, 2017
- Ecolab USA Inc.
- Weiguo Cheng
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Furnish pretreatment to improve paper strength aid performance in p...
- Patent number 9,506,202
- Issue date Nov 29, 2016
- Nalco Company
- Yulin Zhao
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Wet end chemicals for dry end strength
- Patent number 8,894,817
- Issue date Nov 25, 2014
- Ecolab USA Inc.
- Weiguo Cheng
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Furnish pretreatment to improve paper strength aid performance in p...
- Patent number 8,882,964
- Issue date Nov 11, 2014
- Nalco Company
- Yulin Zhao
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Composition and method for improving retention and drainage in pape...
- Patent number 8,491,753
- Issue date Jul 23, 2013
- Nalco Company
- Jane B. Wong Shing
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and arrangement for feeding chemicals into a pulp process st...
- Patent number 8,440,052
- Issue date May 14, 2013
- Nalco Company
- Prasad Duggirala
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for improving paper strength
- Patent number 8,425,725
- Issue date Apr 23, 2013
- BASF SE
- Suleman Buwono
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for improving paper strength
- Patent number 8,425,726
- Issue date Apr 23, 2013
- BASF SE
- Suleman Buwono
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Siliceous composition and its use in papermaking
- Patent number 8,097,127
- Issue date Jan 17, 2012
- BASF SE
- Sakari Saastamoinen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for improving paper strength
- Patent number 8,088,251
- Issue date Jan 3, 2012
- BASF SE
- Suleman Buwono
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Composition and method for paper processing
- Patent number 8,038,846
- Issue date Oct 18, 2011
- Kemira Oyj
- Marco Savio Polverari
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for paper processing
- Patent number 7,981,250
- Issue date Jul 19, 2011
- Kemira Oyj
- Marco Savio Polverari
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for production of paper
- Patent number 6,712,934
- Issue date Mar 30, 2004
- Kemira Chemicals OY
- Jonni Ahlgren
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Manufacture of paper and paperboard
- Patent number 6,616,806
- Issue date Sep 9, 2003
- Ciba Specialty Chemicals Water Treatments Limited
- Gordon Cheng I Chen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Manufacture of paper and paperboard
- Patent number 6,454,902
- Issue date Sep 24, 2002
- Ciba Specialty Chemicals Water Treatments Ltd.
- Gordon Cheng I Chen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Procedure for adding a filler into a pulp based on cellulose fibers
- Patent number 6,436,232
- Issue date Aug 20, 2002
- M-real Oyj
- Petri Silenius
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Manufacture of paper and paperboard
- Patent number 6,406,593
- Issue date Jun 18, 2002
- Ciba Specialty Chemicals Water Treatments Ltd.
- Michael Barry Heard
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Manufacture of paper and paperboard
- Patent number 6,395,134
- Issue date May 28, 2002
- Ciba Specialty Chemicals Water Treatments Ltd.
- Gordon Cheng I Chen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Manufacture of paper and paperboard
- Patent number 6,391,156
- Issue date May 21, 2002
- AB CDM Vastra Frolunda
- Bo Hjalmarson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Anionic water soluble polymer made by reverse phase emulsion polyme...
- Patent number 6,310,157
- Issue date Oct 30, 2001
- CIBA Specialty Chemicals Water Treatment Limited
- Michael Heard
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Manufacture of paper
- Patent number 6,238,520
- Issue date May 29, 2001
- Ciba Specialty Chemicals Water Treatments Limited
- Graham Greenwood
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Grant
Use of diallyldimethylammonium chloride acrylamide dispersion copol...
- Patent number 6,238,521
- Issue date May 29, 2001
- Nalco Chemical Company
- Jane B. Wong Shing
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for producing paper and cardboard
- Patent number 6,132,558
- Issue date Oct 17, 2000
- BASF Aktiengesellschaft
- Rainer Dyllick-Brenzinger
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for the production of paper
- Patent number 6,103,064
- Issue date Aug 15, 2000
- Eka Chemicals AB
- Anna Asplund
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR REDUCING STARCH CONTENT OF AN AQUEOUS PHASE REMOVED FROM...
- Publication number 20240328089
- Publication date Oct 3, 2024
- KEMIRA OYJ
- Jonni AHLGREN
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
PROCESS FOR OBTAINING BIO-SOURCED DIALLYLDIALKYLAMMONIUM HALIDE
- Publication number 20240279154
- Publication date Aug 22, 2024
- SNF Group
- Cédrick FAVERO
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
METHOD FOR OBTAINING A BIO-SOURCED-MONOMER FROM RENEWABLE DIMETHYLA...
- Publication number 20240239933
- Publication date Jul 18, 2024
- SNF Group
- Cédrick FAVERO
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
DOSING OF NANOCELLULOSE SUSPENSION IN GEL PHASE
- Publication number 20200181847
- Publication date Jun 11, 2020
- STORA ENSO OYJ
- Esa SAUKKONEN
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Polymer for Pitch and Stickies Deposition Control in Papermaking
- Publication number 20180363247
- Publication date Dec 20, 2018
- ECOLAB USA INC.
- Xiaojin Harry Li
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
WET END CHEMICALS FOR DRY END STRENGTH IN PAPER
- Publication number 20170121909
- Publication date May 4, 2017
- ECOLAB USA INC.
- Weiguo Cheng
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
FURNISH PRETREATMENT TO IMPROVE PAPER STRENGTH AID PERFORMANCE IN P...
- Publication number 20130133847
- Publication date May 30, 2013
- Yulin ZHAO
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
METHOD AND ARRANGEMENT FOR FEEDING CHEMICALS INTO A PULP PROCESS ST...
- Publication number 20130020041
- Publication date Jan 24, 2013
- Prasad Y. Duggirala
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
COMPOSITION AND METHOD FOR IMPROVING RETENTION AND DRAINAGE IN PAPE...
- Publication number 20120216970
- Publication date Aug 30, 2012
- Jane B. Wong Shing
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Process for Improving Paper Strength
- Publication number 20120067535
- Publication date Mar 22, 2012
- BASF SE
- Suleman Buwono
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Process for Improving Paper Strength
- Publication number 20120067534
- Publication date Mar 22, 2012
- BASF SE
- Suleman Buwono
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
METHOD AND ARRANGEMENT FOR FEEDING CHEMICALS INTO A PULP PROCESS ST...
- Publication number 20100300632
- Publication date Dec 2, 2010
- Prasad Y. Duggirala
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
PROCESS FOR IMPROVING PAPER STRENGTH
- Publication number 20100288457
- Publication date Nov 18, 2010
- Suleman Buwono
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Paper Dyeing Process
- Publication number 20100126683
- Publication date May 27, 2010
- VISY R & D PTY LTD.
- Sunil Chopra
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
PAPER AND PAPERBOARD PRODUCTION PROCESS AND CORRESPONDING NOVEL RET...
- Publication number 20090283232
- Publication date Nov 19, 2009
- SNF SA
- Rene Hund
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
SILICEOUS COMPOSITION AND ITS USE IN PAPERMAKING
- Publication number 20090236065
- Publication date Sep 24, 2009
- Sakari Saastamoinen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
COMPOSITION AND METHOD FOR IMPROVING RETENTION AND DRAINAGE IN PAPE...
- Publication number 20090025891
- Publication date Jan 29, 2009
- Jane B. Wong Shing
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Method for an Arrangement at a Paper Machine
- Publication number 20080257509
- Publication date Oct 23, 2008
- Paul Olof Meinander
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
COMPOSITION AND METHOD FOR PAPER PROCESSING
- Publication number 20080128102
- Publication date Jun 5, 2008
- KEMIRA OYJ
- Marco Savio Polverari
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
COMPOSITION AND METHOD FOR PAPER PROCESSING
- Publication number 20080066880
- Publication date Mar 20, 2008
- Marco Savio Polverari
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Support for image recording medium, method of making the support an...
- Publication number 20070254104
- Publication date Nov 1, 2007
- FUJI PHOTO FILM CO., LTD.
- Shigehisa Tamagawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Papermaking processes using coagulants and optical brighteners
- Publication number 20070169903
- Publication date Jul 26, 2007
- Rosa M. Covarrubias
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Paper and paperboard production process and corresponding novel ret...
- Publication number 20060243407
- Publication date Nov 2, 2006
- SNF SA
- Rene Hund
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Support for image recording medium, method of making the support an...
- Publication number 20060029752
- Publication date Feb 9, 2006
- Shigehisa Tamagawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Process for making paper
- Publication number 20050161183
- Publication date Jul 28, 2005
- Rosa Maria Covarrubias
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Paper and paperboard production process and corresponding novel ret...
- Publication number 20050150622
- Publication date Jul 14, 2005
- SNF SA
- Rene Hund
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Paper and paperboard production process and corresponding novel ret...
- Publication number 20040040683
- Publication date Mar 4, 2004
- SNF SA
- Rene Hund
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Paper and paperboard production process and corresponding novel ret...
- Publication number 20030150575
- Publication date Aug 14, 2003
- SNF SA
- Rene Hund
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Method for production of paper
- Publication number 20030079848
- Publication date May 1, 2003
- Jonni Ahlgren
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Manufacture of paper and paperboard
- Publication number 20020195218
- Publication date Dec 26, 2002
- Gordon Cheng I Chen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

by selecting point of addition or time of contact between components

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Dosing of nanocellulose suspension in gel phase

Method of manufacturing a toilet paper

Method for forming a composite comprising MFC and a composite produ...

Polymer for pitch and stickies deposition control in papermaking

Wet end chemicals for dry end strength in paper

Process for the manufacture of paper and paperboard

Wet end chemicals for dry end strength in paper

Furnish pretreatment to improve paper strength aid performance in p...

Wet end chemicals for dry end strength

Furnish pretreatment to improve paper strength aid performance in p...

Composition and method for improving retention and drainage in pape...

Method and arrangement for feeding chemicals into a pulp process st...

Process for improving paper strength

Process for improving paper strength

Siliceous composition and its use in papermaking

Process for improving paper strength

Composition and method for paper processing

Method for paper processing

Method for production of paper

Manufacture of paper and paperboard

Manufacture of paper and paperboard

Procedure for adding a filler into a pulp based on cellulose fibers

Manufacture of paper and paperboard

Manufacture of paper and paperboard

Manufacture of paper and paperboard

Anionic water soluble polymer made by reverse phase emulsion polyme...

Manufacture of paper

Use of diallyldimethylammonium chloride acrylamide dispersion copol...

Process for producing paper and cardboard

Process for the production of paper

Patents Applicationslast 30 patents

METHOD FOR REDUCING STARCH CONTENT OF AN AQUEOUS PHASE REMOVED FROM...

PROCESS FOR OBTAINING BIO-SOURCED DIALLYLDIALKYLAMMONIUM HALIDE

METHOD FOR OBTAINING A BIO-SOURCED-MONOMER FROM RENEWABLE DIMETHYLA...

DOSING OF NANOCELLULOSE SUSPENSION IN GEL PHASE

Polymer for Pitch and Stickies Deposition Control in Papermaking

WET END CHEMICALS FOR DRY END STRENGTH IN PAPER

FURNISH PRETREATMENT TO IMPROVE PAPER STRENGTH AID PERFORMANCE IN P...

METHOD AND ARRANGEMENT FOR FEEDING CHEMICALS INTO A PULP PROCESS ST...

COMPOSITION AND METHOD FOR IMPROVING RETENTION AND DRAINAGE IN PAPE...

Process for Improving Paper Strength

Process for Improving Paper Strength

METHOD AND ARRANGEMENT FOR FEEDING CHEMICALS INTO A PULP PROCESS ST...

PROCESS FOR IMPROVING PAPER STRENGTH

Paper Dyeing Process

PAPER AND PAPERBOARD PRODUCTION PROCESS AND CORRESPONDING NOVEL RET...

SILICEOUS COMPOSITION AND ITS USE IN PAPERMAKING

COMPOSITION AND METHOD FOR IMPROVING RETENTION AND DRAINAGE IN PAPE...

Method for an Arrangement at a Paper Machine

COMPOSITION AND METHOD FOR PAPER PROCESSING

COMPOSITION AND METHOD FOR PAPER PROCESSING

Support for image recording medium, method of making the support an...

Papermaking processes using coagulants and optical brighteners

Paper and paperboard production process and corresponding novel ret...

Support for image recording medium, method of making the support an...

Process for making paper

Paper and paperboard production process and corresponding novel ret...

Paper and paperboard production process and corresponding novel ret...

Paper and paperboard production process and corresponding novel ret...

Method for production of paper

Manufacture of paper and paperboard