with dithionites

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CPC
D21C9/1089

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DTEXTILES PAPER D21Papermaking D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS APPARATUS THEREFOR D21C9/00After-treatment of cellulose pulp

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D21C9/1089with dithionites

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing bleached wood fibre material
- Patent number 11,725,338
- Issue date Aug 15, 2023
- BASF SE
- Stefan Erren
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for producing bleached wood fibre material
- Patent number 11,015,290
- Issue date May 25, 2021
- BASF SE
- Stefan Erren
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Stabilization of sodium dithionite by means of various additives
- Patent number 10,850,982
- Issue date Dec 1, 2020
- BASF SE
- Eberhard Beckmann
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the production of bleached wood particles and pale to w...
- Patent number 8,784,607
- Issue date Jul 22, 2014
- BASF SE
- Dieter Schoenhaber
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Environmentally benign TCF bleaching sequences for AS/AQ wheat stra...
- Patent number 8,080,129
- Issue date Dec 20, 2011
- Naila Yaqoob
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for preparing dithionite
- Patent number 7,993,622
- Issue date Aug 9, 2011
- Kemira Oyj
- Risto Rahkola
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Absorbent sheet made with papermaking fibers with durable curl
- Patent number 7,291,247
- Issue date Nov 6, 2007
- Georgia-Pacific Consumer Operations LLC
- Jeffrey A. Lee
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for brightening virgin mechanical pulp
- Patent number 7,163,564
- Issue date Jan 16, 2007
- Jean Luc Sibiet
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for brightening pulp with hydrosulfite solution generated fr...
- Patent number 7,029,554
- Issue date Apr 18, 2006
- Rohm & Haas Company
- Rangamannar Goda
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of bleaching and providing papermaking fibers with durable curl
- Patent number 6,627,041
- Issue date Sep 30, 2003
- Georgia-Pacific Corporation
- Jeffrey A. Lee
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Preparation and use of iminodisuccinic acid salts
- Patent number 6,207,010
- Issue date Mar 27, 2001
- Bayer Aktiengesellschaft
- Torsten Groth
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation and use of iminodisuccinic acid salts
- Patent number 6,107,518
- Issue date Aug 22, 2000
- Bayer Aktiengesellschaft
- Torsten Groth
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for reduced sulfur dioxide formation in refiner bleaching
- Patent number 5,607,547
- Issue date Mar 4, 1997
- Hoechst Celanese Corporation
- Jeffrey Nye
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for de-inking recycled paper pulp with a reducing agent
- Patent number 5,429,716
- Issue date Jul 4, 1995
- Morton International, Inc.
- Maurice Hache
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for bleaching
- Patent number 4,919,755
- Issue date Apr 24, 1990
- Eka Nobel AB
- Inge Mansson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of bleaching high yield pulp by using dithionite ion and exc...
- Patent number 4,863,564
- Issue date Sep 5, 1989
- Virginia Chemicals Inc.
- S. Allen Grimsley
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of preparing reproducibly stable aqueous suspensions of sodi...
- Patent number 4,729,886
- Issue date Mar 8, 1988
- Virginia Chemicals, Inc.
- Edwin D. Little
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Stabilized sodium dithionite formulations containing inert organic...
- Patent number 4,614,647
- Issue date Sep 30, 1986
- BASF Aktiengesellschaft
- Max Appl
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Sodium hydrosulfite composition
- Patent number 4,357,256
- Issue date Nov 2, 1982
- Mitsubishi Gas Chemical Company, Inc.
- Takaaki Yamaguchi
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Compositions containing dithionites
- Patent number 4,108,960
- Issue date Aug 22, 1978
- BOC Limited
- Roland Albert Leigh
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Stabilized sodium dithionite solutions
- Patent number 3,985,674
- Issue date Oct 12, 1976
- Virginia Chemicals Inc.
- Leonard C. Ellis
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Bleaching wood pulp with sodium hydrosulfite in the presence of hex...
- Patent number 3,962,030
- Issue date Jun 8, 1976
- Ventron Corporation
- Edward A. Sullivan
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Wood pulp bleaching composition containing sodium hydrosulfite and...
- Patent number 3,960,649
- Issue date Jun 1, 1976
- Ventron Corporation
- Edward A. Sullivan
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
3856696
- Patent number 3,856,696
- Issue date Dec 24, 1974
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
3687619
- Patent number 3,687,619
- Issue date Aug 29, 1972
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
3653804
- Patent number 3,653,804
- Issue date Apr 4, 1972
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
2963395
- Patent number 2,963,395
- Issue date Dec 6, 1960
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
2450034
- Patent number 2,450,034
- Issue date Sep 28, 1948
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
2071307
- Patent number 2,071,307
- Issue date Feb 16, 1937
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
2071304
- Patent number 2,071,304
- Issue date Feb 16, 1937
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PRODUCING BLEACHED WOOD FIBRE MATERIAL
- Publication number 20210254280
- Publication date Aug 19, 2021
- BASF SE
- Stefan ERREN
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
METHOD FOR PRODUCING BLEACHED WOOD FIBRE MATERIAL
- Publication number 20180216292
- Publication date Aug 2, 2018
- BASF SE
- Stefan ERREN
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
STABILIZATION OF SODIUM DITHIONITE BY MEANS OF VARIOUS ADDITIVES
- Publication number 20180134557
- Publication date May 17, 2018
- BASF SE
- Eberhard BECKMANN
- C01 - INORGANIC CHEMISTRY
Information Patent Application
BLEACHING METHOD
- Publication number 20110203485
- Publication date Aug 25, 2011
- KEMIRA OYJ
- Risto Rahkola
- C01 - INORGANIC CHEMISTRY
Information Patent Application
ENVIRONMENTALLY BENIGN TCF BLEACHING SEQUENCES FOR AS/AQ WHEAT STRA...
- Publication number 20110114273
- Publication date May 19, 2011
- Naila Yaqoob
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
METHOD FOR PREPARING DITHIONITE
- Publication number 20100181531
- Publication date Jul 22, 2010
- Risto Rahkola
- C01 - INORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR THE PRODUCTION OF BLEACHED WOOD PARTICLES AND PALE TO W...
- Publication number 20100132898
- Publication date Jun 3, 2010
- BASF SE
- Dieter Schoenhaber
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Method for brightening virgin mechanical pulp
- Publication number 20040117914
- Publication date Jun 24, 2004
- Jean Luc Sibiet
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Method for the measurement of dithionite concentration
- Publication number 20040040867
- Publication date Mar 4, 2004
- BTG KALLE INVENTING AB
- Helena Bergsland
- G01 - MEASURING TESTING
Information Patent Application
Method of bleaching and providing papermaking fibers with durable curl
- Publication number 20040016524
- Publication date Jan 29, 2004
- Jeffrey A. Lee
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Method for brightening pulp with hydrosulfite solution
- Publication number 20040000380
- Publication date Jan 1, 2004
- Rangamannar Goda
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Method of bleaching and providing papermaking fibers with durable curl
- Publication number 20020011317
- Publication date Jan 31, 2002
- Jeffrey A. Lee
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

with dithionites

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Method for producing bleached wood fibre material

Method for producing bleached wood fibre material

Stabilization of sodium dithionite by means of various additives

Process for the production of bleached wood particles and pale to w...

Environmentally benign TCF bleaching sequences for AS/AQ wheat stra...

Method for preparing dithionite

Absorbent sheet made with papermaking fibers with durable curl

Method for brightening virgin mechanical pulp

Method for brightening pulp with hydrosulfite solution generated fr...

Method of bleaching and providing papermaking fibers with durable curl

Preparation and use of iminodisuccinic acid salts

Preparation and use of iminodisuccinic acid salts

Method for reduced sulfur dioxide formation in refiner bleaching

Process for de-inking recycled paper pulp with a reducing agent

Process for bleaching

Method of bleaching high yield pulp by using dithionite ion and exc...

Method of preparing reproducibly stable aqueous suspensions of sodi...

Stabilized sodium dithionite formulations containing inert organic...

Sodium hydrosulfite composition

Compositions containing dithionites

Stabilized sodium dithionite solutions

Bleaching wood pulp with sodium hydrosulfite in the presence of hex...

Wood pulp bleaching composition containing sodium hydrosulfite and...

3856696

3687619

3653804

2963395

2450034

2071307

2071304

Patents Applicationslast 30 patents

METHOD FOR PRODUCING BLEACHED WOOD FIBRE MATERIAL

METHOD FOR PRODUCING BLEACHED WOOD FIBRE MATERIAL

STABILIZATION OF SODIUM DITHIONITE BY MEANS OF VARIOUS ADDITIVES

BLEACHING METHOD

ENVIRONMENTALLY BENIGN TCF BLEACHING SEQUENCES FOR AS/AQ WHEAT STRA...

METHOD FOR PREPARING DITHIONITE

PROCESS FOR THE PRODUCTION OF BLEACHED WOOD PARTICLES AND PALE TO W...

Method for brightening virgin mechanical pulp

Method for the measurement of dithionite concentration

Method of bleaching and providing papermaking fibers with durable curl

Method for brightening pulp with hydrosulfite solution

Method of bleaching and providing papermaking fibers with durable curl