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D21C9/1084
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D
TEXTILES PAPER
D21
Papermaking
D21C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS APPARATUS THEREFOR
D21C9/00
After-treatment of cellulose pulp
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D21C9/1084
with reducing compounds
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Patents Grants
last 30 patents
Information
Patent Grant
High efficiency fiber bleaching process
Patent number
11,840,805
Issue date
Dec 12, 2023
GPCP IP Holdings LLC
Jeffrey A. Lee
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Dissolving wood pulps and methods of making and using the same
Patent number
11,661,704
Issue date
May 30, 2023
GP Cellulose GmbH
Arthur James Nonni
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
High efficiency fiber bleaching process
Patent number
11,591,751
Issue date
Feb 28, 2023
GPCP IP Holdings LLC
Jeffrey A. Lee
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Dissolving wood pulps and methods of making and using the same
Patent number
11,105,042
Issue date
Aug 31, 2021
GP Cellulose GmbH
Arthur J. Nonni
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Bleaching and shive reduction process for non-wood fibers
Patent number
10,711,399
Issue date
Jul 14, 2020
GPCP IP Holdings LLC
Jeffrey A. Lee
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Processes and compositions for brightness improvement in paper prod...
Patent number
9,932,709
Issue date
Apr 3, 2018
Ecolab USA Inc.
Prasad Y. Duggirala
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for improving brightness in bleached pulp
Patent number
9,068,293
Issue date
Jun 30, 2015
Nalco Company
Prasad Y. Duggirala
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for producing bleached pulp
Patent number
8,864,942
Issue date
Oct 21, 2014
Mitsubishi Gas Chemical Company, Inc.
Iori Tomoda
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for the use of oxidants for microbial control under reducing...
Patent number
8,808,500
Issue date
Aug 19, 2014
Lonza Inc.
Kevin Janak
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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
Process for producing bleached pulp
Patent number
8,268,123
Issue date
Sep 18, 2012
Mitsubishi Gas Chemical Company, Inc.
Iori Tomoda
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Methods for enhancing brightness and resistance to thermal yellowin...
Patent number
8,246,780
Issue date
Aug 21, 2012
Nalco Company
Prasad Duggirala
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for manufacturing bleached mechanical and chemithermomechani...
Patent number
7,736,463
Issue date
Jun 15, 2010
Holmen Aktiebolag
Eric Yijing Zhang
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Bleaching and brightness stabilization of lignocellulosic materials...
Patent number
7,285,181
Issue date
Oct 23, 2007
FPInnovations
Thomas Qiuxiong Hu
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Peroxide bleaching of wood pulp using stabilizers and sodium hydros...
Patent number
7,001,484
Issue date
Feb 21, 2006
University of New Brunswick
Yonghao Ni
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for bleaching pulp or paper
Patent number
6,758,942
Issue date
Jul 6, 2004
Royce Associates
Ronald C. Naddeo
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Sulphinic acid derivatives, method for producing them, and their use
Patent number
6,586,622
Issue date
Jul 1, 2003
L. Bruggemann KG
Josef Berghofer
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Grant
Method of bleaching with formamidine sulfinic acid using a reducing...
Patent number
6,428,653
Issue date
Aug 6, 2002
West Fraser Timber Co. Ltd.
Richard C. Denton
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Formamidinesulfinic-acid compositions
Patent number
6,319,288
Issue date
Nov 20, 2001
Degussa AG
Harald Jakob
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Sulphinic acid derivatives, method for producing them, and their use
Patent number
6,211,400
Issue date
Apr 3, 2001
L. Bruggemann KG
Josef Berghofer
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Process for producing thiourea dioxide
Patent number
5,958,184
Issue date
Sep 28, 1999
Mitsubishi Gas Chemical Company Inc.
Toshiaki Kanada
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Exothermic bleaching of high-yield pulps simultaneously with oxygen...
Patent number
5,611,889
Issue date
Mar 18, 1997
Pulp and Paper Research Institute of Canada
Gordon Leary
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Sequential bleaching of de-inked paper pulp with sodium bisulfite,...
Patent number
5,562,803
Issue date
Oct 8, 1996
Morton International, Inc.
David L. K. Wang
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for preserving the mechanical strength properties of chemic...
Patent number
5,534,115
Issue date
Jul 9, 1996
Interox International (Societe Anonyme)
Marc Hoyos
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Bleaching recycled pulp with a reductive-oxidative sequence
Patent number
5,464,501
Issue date
Nov 7, 1995
Societe Anonyme pour l'Etude et l'Exploitation l'Air Liquide, des Procedes Ge...
Jack Kogan
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Quaternary compounds as brightness enhancers
Patent number
5,458,737
Issue date
Oct 17, 1995
Hoechst Celanese Corporation
Leonard L. Diaddario
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Bleaching of deinked paper/wood pulp
Patent number
5,449,436
Issue date
Sep 12, 1995
Atochem
Lucien Bourson
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
Method of bleaching de-inked pulp and removing the ink particles wi...
Patent number
5,391,261
Issue date
Feb 21, 1995
Morton International, Inc.
Luc Van Den Bergh
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Hydrolysis of resin in pulp with an enzyme and a hydrosulfite
Patent number
5,338,403
Issue date
Aug 16, 1994
Novo Nordisk A/S
Lars S. Pedersen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Patents Applications
last 30 patents
Information
Patent Application
High Efficiency Fiber Bleaching Process
Publication number
20230167604
Publication date
Jun 1, 2023
GPCP IP Holdings LLC
Jeffrey A. Lee
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
CELLULOSE MATERIAL PLASTICIZATION AND VISCOSITY CONTROLLED CELLULOS...
Publication number
20220298725
Publication date
Sep 22, 2022
UPM-Kymmene Corporation
Pasi VIRTANEN
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD FOR MANUFACTURING BLEACHED PULP, FEEDSTOCK, AND PACKAGING SY...
Publication number
20220267957
Publication date
Aug 25, 2022
WestRock MWV, LLC
Fritz G. Paulsen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
NOVEL DISSOLVING WOOD PULPS AND METHODS OF MAKING AND USING THE SAME
Publication number
20210355635
Publication date
Nov 18, 2021
GP CELLULOSE GMBH
Arthur James NONNI
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
High Efficiency Fiber Bleaching Process
Publication number
20210079594
Publication date
Mar 18, 2021
GPCP IP Holdings LLC
Jeffrey A. Lee
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
BLEACHING AND SHIVE REDUCTION PROCESS FOR NON-WOOD FIBERS
Publication number
20200332466
Publication date
Oct 22, 2020
GPCP IP Holdings LLC
Jeffrey A. Lee
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Application
NOVEL DISSOLVING WOOD PULPS AND METHODS OF MAKING AND USING THE SAME
Publication number
20190264388
Publication date
Aug 29, 2019
GP Cellulose GMbH
Arthur J. Nonni
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
PROCESSES AND COMPOSITIONS FOR BRIGHTNESS IMPROVEMENT IN PAPER PROD...
Publication number
20140259458
Publication date
Sep 18, 2014
Ecolab USA Inc.
Prasad Y. Duggirala
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Method for the Use of Oxidants for Microbial Control Under Reducing...
Publication number
20130302443
Publication date
Nov 14, 2013
Lonza Inc.
Kevin Janak
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information
Patent Application
METHOD FOR IMPROVING BRIGHTNESS IN BLEACHED PULP
Publication number
20130206350
Publication date
Aug 15, 2013
Prasad Y. Duggirala
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
PROCESS FOR PRODUCING BLEACHED PULP
Publication number
20130062026
Publication date
Mar 14, 2013
Iori Tomoda
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
COMPOSITIONS AND PROCESSES FOR PAPER
Publication number
20120211185
Publication date
Aug 23, 2012
Prasad Duggirala
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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
PROCESS FOR PRODUCING BLEACHED PULP
Publication number
20090183845
Publication date
Jul 23, 2009
Iori Tomoda
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
MULTI-STEP PULP BLEACHING
Publication number
20080087390
Publication date
Apr 17, 2008
Fort James Corporation
Jeffrey A. Lee
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Pulp Bleaching Processes
Publication number
20070246176
Publication date
Oct 25, 2007
Shoichi Miyawaki
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Treatment of cellulose during bleaching with agent capable of reduc...
Publication number
20070199668
Publication date
Aug 30, 2007
Borregaard ChemCell
Justin T. Scarpello
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Treatment of cellulose during bleaching with agent capable of reduc...
Publication number
20070151680
Publication date
Jul 5, 2007
Borregaard ChemCell
Justin T. Scarpello
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Method of brightness enhancement
Publication number
20070131365
Publication date
Jun 14, 2007
Prasad Y. Duggirala
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Compositions and processes for paper production
Publication number
20070062653
Publication date
Mar 22, 2007
Prasad Duggirala
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Treatment of cellulose during bleaching with agent capable of reduc...
Publication number
20060249265
Publication date
Nov 9, 2006
Borregaard ChemCell
Justin T. Scarpello
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Compositions and methods for enhancing brightness and brightness st...
Publication number
20060229393
Publication date
Oct 12, 2006
Prasad Duggirala
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Method for bleaching wood fibers
Publication number
20060081345
Publication date
Apr 20, 2006
Qiang Huang
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Peroxide bleaching of wood pulp
Publication number
20060081346
Publication date
Apr 20, 2006
the University of New Brunswick
Yonghao Ni
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Method for bleaching and color stripping recycled fibers
Publication number
20040211533
Publication date
Oct 28, 2004
Qiang Huang
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Process for bleaching pulp or paper
Publication number
20040188043
Publication date
Sep 30, 2004
Ronald C. Naddeo
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Bleaching and brightness stabilization of lignocellulosic materials...
Publication number
20040173328
Publication date
Sep 9, 2004
Thomas Qiuxiong Hu
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Treatment of a mixture containing cellulose
Publication number
20040000012
Publication date
Jan 1, 2004
Borregaard ChemCell
Justin T. Scarpello
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Process for bleaching pulp or paper
Publication number
20030155085
Publication date
Aug 21, 2003
Ronald C. Naddeo
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Peroxide bleaching of wood pulp
Publication number
20030070777
Publication date
Apr 17, 2003
Yonghao Ni
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE