with O2

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CPC
D21C9/1068

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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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D21C9/1068with O2

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Oxygen bleaching method of pulp
- Patent number 12,104,321
- Issue date Oct 1, 2024
- BEIJING FORESTRY UNIVERSITY
- Feng Xu
- 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
Process for the delignifying bleaching of cellulose pulp by activat...
- Patent number 4,445,969
- Issue date May 1, 1984
- Mo och Domsjo Aktiebolag
- Hans O. Samuelson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Mixer for use in pulp processes
- Patent number 4,435,085
- Issue date Mar 6, 1984
- Ingersoll-Rand Company
- Oscar Luthi
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for controlled addition of alkaline chemicals...
- Patent number 4,431,480
- Issue date Feb 14, 1984
- The Black Clawson Company
- Larry D. Markham
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for control of chemicals during gas treatment of suspensions
- Patent number 4,419,184
- Issue date Dec 6, 1983
- Kamyr AB
- Ake Backlund
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for oxygen delignification
- Patent number 4,384,920
- Issue date May 24, 1983
- The Black Clawson Company
- Larry D. Markham
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Alkaline oxygen delignification and bleaching of cellulose pulp in...
- Patent number 4,372,811
- Issue date Feb 8, 1983
- Mo och Domsjo Aktiebolag
- Hans O. Samuelson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for medium consistency oxygen delignification of pulp
- Patent number 4,363,697
- Issue date Dec 14, 1982
- The Black Clawson Company
- Larry D. Markham
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for mixing gases with a wood pulp slurry
- Patent number 4,303,470
- Issue date Dec 1, 1981
- Weyerhaeuser Company
- Michael D. Meredith
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for intimately mixing oxygen and pulp while us...
- Patent number 4,298,427
- Issue date Nov 3, 1981
- Weyerhaeuser Company
- Jozef M. Bentvelzen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for treating pulp with oxygen in a multi-stage...
- Patent number 4,298,426
- Issue date Nov 3, 1981
- Weyerhaeuser Company
- Louis O. Torregrossa
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Treating pulp with oxygen
- Patent number 4,295,925
- Issue date Oct 20, 1981
- Weyerhaeuser Company
- Jozef M. Bentvelzen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for treating pulp with oxygen
- Patent number 4,295,926
- Issue date Oct 20, 1981
- Weyerhaeuser Company
- Jozef M. Bentvelzen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for treating pulp with oxygen and storing the...
- Patent number 4,295,927
- Issue date Oct 20, 1981
- Weyerhaeuser Company
- Jozef M. Bentvelzen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Delignification and bleaching of lignocellulosic pulp via photo-oxy...
- Patent number 4,294,654
- Issue date Oct 13, 1981
- International Paper Company
- Rex H. Turner
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Plural stage mixing and thickening oxygen bleaching process
- Patent number 4,259,150
- Issue date Mar 31, 1981
- Kamyr Inc.
- James R. Prough
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Oxygen reactor systems pulp reject treatment
- Patent number 4,220,498
- Issue date Sep 2, 1980
- Kamyr, Inc.
- James R. Prough
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for removing residual oxygen from oxygen-bleached pulp
- Patent number 4,209,359
- Issue date Jun 24, 1980
- International Paper Company
- Anil Sethy
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Oxygen delignification of wood pulp
- Patent number 4,198,266
- Issue date Apr 15, 1980
- Airco, Inc.
- Bradley S. Kirk
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Apparatus for delignifying and bleaching cellulose pulp
- Patent number 4,177,105
- Issue date Dec 4, 1979
- Kamyr, Incorporated
- Oliver A. Laakso
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for continuous oxygen bleaching of cellulosic...
- Patent number 4,161,421
- Issue date Jul 17, 1979
- Kamyr, Inc.
- Michael I. Sherman
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Delignification and bleaching of cellulose pulp
- Patent number 4,132,589
- Issue date Jan 2, 1979
- Per K. Christensen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Preparation of liquor for delignification or alkali treatment by au...
- Patent number 4,116,759
- Issue date Sep 26, 1978
- Jan Janson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for bleaching cellulose pulp with molecular oxygen
- Patent number 4,115,186
- Issue date Sep 19, 1978
- A. Ahlstrom Osakeyhtio
- Frey Viking Sundman
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Apparatus for oxygen bleaching of pulp including recirculation of e...
- Patent number 4,093,511
- Issue date Jun 6, 1978
- Kamyr Aktiebolag
- Johan Christoffer Fredrik Carl Richter
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Delignification of cellulosic material with an alkaline aqueous med...
- Patent number 4,089,737
- Issue date May 16, 1978
- Toyo Pulp Company, Ltd.
- Tadashi Nagano
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for the delignification of lignocellulosic material by main...
- Patent number 4,050,981
- Issue date Sep 27, 1977
- Mo och Domsjo Aktiebolag
- Allan Geoffrey Jamieson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for delignifying and bleaching cellulose pulp
- Patent number 4,016,029
- Issue date Apr 5, 1977
- Mo och Domsjo Aktiebolag
- Hans Olof Samuelson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Recirculation of unconsumed oxygen pulp bleaching gas
- Patent number 3,963,561
- Issue date Jun 15, 1976
- Kamyr Aktiebolag
- Johan Christoffer Fredrik Carl Richter
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Patents Applicationslast 30 patents

Information Patent Application
OXYGEN BLEACHING METHOD OF PULP
- Publication number 20230272580
- Publication date Aug 31, 2023
- Beijing Forestry University
- Feng XU
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
HIGH YIELD CHEMICAL PULPING AND BLEACHING PROCESS
- Publication number 20230265609
- Publication date Aug 24, 2023
- 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
Use of Cellulase to improve Viscosity Control of Dissolving Pulp
- Publication number 20190257031
- Publication date Aug 22, 2019
- NOVOZYMES A/S
- Pedro Emanuel Garcia-Loureiro
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Oxygen bleaching method of pulp

Bleaching and shive reduction process for non-wood fibers

Process for the delignifying bleaching of cellulose pulp by activat...

Mixer for use in pulp processes

Method and apparatus for controlled addition of alkaline chemicals...

Method for control of chemicals during gas treatment of suspensions

Method and apparatus for oxygen delignification

Alkaline oxygen delignification and bleaching of cellulose pulp in...

Method for medium consistency oxygen delignification of pulp

Method and apparatus for mixing gases with a wood pulp slurry

Method and apparatus for intimately mixing oxygen and pulp while us...

Method and apparatus for treating pulp with oxygen in a multi-stage...

Treating pulp with oxygen

Method and apparatus for treating pulp with oxygen

Method and apparatus for treating pulp with oxygen and storing the...

Delignification and bleaching of lignocellulosic pulp via photo-oxy...

Plural stage mixing and thickening oxygen bleaching process

Oxygen reactor systems pulp reject treatment

Process for removing residual oxygen from oxygen-bleached pulp

Oxygen delignification of wood pulp

Apparatus for delignifying and bleaching cellulose pulp

Method and apparatus for continuous oxygen bleaching of cellulosic...

Delignification and bleaching of cellulose pulp

Preparation of liquor for delignification or alkali treatment by au...

Process for bleaching cellulose pulp with molecular oxygen

Apparatus for oxygen bleaching of pulp including recirculation of e...

Delignification of cellulosic material with an alkaline aqueous med...

Process for the delignification of lignocellulosic material by main...

Process for delignifying and bleaching cellulose pulp

Recirculation of unconsumed oxygen pulp bleaching gas

Patents Applicationslast 30 patents

OXYGEN BLEACHING METHOD OF PULP

HIGH YIELD CHEMICAL PULPING AND BLEACHING PROCESS

BLEACHING AND SHIVE REDUCTION PROCESS FOR NON-WOOD FIBERS

Use of Cellulase to improve Viscosity Control of Dissolving Pulp