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D21C9/153
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Parent Industries
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
Current Industry
D21C9/153
with ozone
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Patents Grants
last 30 patents
Information
Patent Grant
Method for producing softwood-derived pulp fibers for paper and sof...
Patent number
11,879,210
Issue date
Jan 23, 2024
Unicharm Corporation
Takeshi Bandou
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for preparing dissolving pulp by TCF bleaching of poplar KP
Patent number
11,643,777
Issue date
May 9, 2023
QILU UNIVERSITY OF TECHNOLOGY
Xingxiang Ji
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Recycled pulp, absorbent, non-woven fabric, and sanitary article
Patent number
11,554,520
Issue date
Jan 17, 2023
Unicharm Corporation
Takayoshi Konishi
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Cellulose fibers
Patent number
11,414,789
Issue date
Aug 16, 2022
RE:NEWCELL AB
Mikael Lindström
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for manufacturing recycled pulp from used sanitary products
Patent number
11,319,670
Issue date
May 3, 2022
Unicharm Corporation
Takayoshi Konishi
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information
Patent Grant
Method for manufacturing recycled pulp from used sanitary products
Patent number
11,098,447
Issue date
Aug 24, 2021
Unicharm Corporation
Takayoshi Konishi
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information
Patent Grant
Ozone generator with position-dependent discharge distribution
Patent number
10,906,809
Issue date
Feb 2, 2021
XYLEM IP MANAGEMENT S.à r.l.
Ralf Fiekens
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Method for manufacturing recycled pulp from used sanitary article
Patent number
10,773,421
Issue date
Sep 15, 2020
Unicharm Corporation
Takayoshi Konishi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for lignin depolymerisation
Patent number
10,626,553
Issue date
Apr 21, 2020
METGEN OY
Klara Birikh
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for manufacturing recycled pulp from used sanitary products
Patent number
10,626,554
Issue date
Apr 21, 2020
Unicharm Corporation
Takayoshi Konishi
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information
Patent Grant
Enzymatic process combined with hot caustic extraction for the remo...
Patent number
10,584,442
Issue date
Mar 10, 2020
Novozymes A/S
Henrik Lund
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Use of surfactant to treat pulp and improve the incorporation of kr...
Patent number
10,407,830
Issue date
Sep 10, 2019
GP Cellulose GmbH
Arthur J. Nonni
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for pretreating reclaimed cotton fibers to be used in the p...
Patent number
10,316,467
Issue date
Jun 11, 2019
Lenzing Aktiengesellschaft
Christian Weilach
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Method for treating chemical pulps by treatment with ozone in the p...
Patent number
10,006,168
Issue date
Jun 26, 2018
L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Geo...
Frederic Pouyet
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Use of surfactant to treat pulp and improve the incorporation of kr...
Patent number
9,617,686
Issue date
Apr 11, 2017
GP Cellulose GmbH
Arthur James Nonni
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for production of bleached pulp
Patent number
8,900,408
Issue date
Dec 2, 2014
Mitsubishi Gas Chemical Company, Inc.
Kiyoshi Yoshida
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for preparing nonwood fiber paper
Patent number
8,795,469
Issue date
Aug 5, 2014
Prairie Paper Ventures Inc.
Jeff Golfman
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for treating pulp in connection with the bleaching of chemic...
Patent number
8,277,608
Issue date
Oct 2, 2012
Andritz Oy
Kaj Henricson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for bleaching chemical paper pulps by final ozone treatment...
Patent number
8,268,120
Issue date
Sep 18, 2012
ITT Manufacturing Enterprises, Inc.
Guillaume Pipon
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Processes and systems for the bleaching of lignocellulosic pulps fo...
Patent number
8,262,856
Issue date
Sep 11, 2012
Andritz Inc.
Pam O'Leary
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process of bleaching hardwood pulps in a D1 or D2 stage in a presen...
Patent number
7,976,677
Issue date
Jul 12, 2011
International Paper Company
Caifang Yin
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process of bleaching softwood pulps in a D1 or D2 stage in a presen...
Patent number
7,976,676
Issue date
Jul 12, 2011
International Paper Company
Caifang Yin
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method and system for the treatment of pulp prior to ozone bleaching
Patent number
7,294,227
Issue date
Nov 13, 2007
Metso Paper, Inc.
Monica Bokström
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
System for conveying shredded pulp to an ozone reactor
Patent number
6,989,078
Issue date
Jan 24, 2006
Valmet Fibertech AB
Monica Bokström
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Ozone bleaching of low consistency pulp
Patent number
6,793,771
Issue date
Sep 21, 2004
American Air Liquide, Inc.
V. S. Meenakshi Sundaram
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for the bleaching of low consistency pulp using high partia...
Patent number
6,773,547
Issue date
Aug 10, 2004
American Air Liquide, Inc.
V. S. Meenakshi Sundaram
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Optical fiber harness
Patent number
6,668,130
Issue date
Dec 23, 2003
Tektronix, Inc.
Daniel B. Meyer
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Bleaching medium consistency pulp with ozone
Patent number
6,579,411
Issue date
Jun 17, 2003
Andritz Oy
Kaj Henricson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for ozone bleaching of low consistency pulp
Patent number
6,579,412
Issue date
Jun 17, 2003
L'Air Liquide - Societe' Anonyme a' Directoire et Conseil de Surveillance pou...
V. S. Meenakshi Sundaram
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for bleaching medium consistency pulp with ozone using a pr...
Patent number
6,547,923
Issue date
Apr 15, 2003
Andritz Oy
Kaj Henricson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Patents Applications
last 30 patents
Information
Patent Application
METHOD FOR BLEACHING PULP FROM RECYCLED TEXTILE MATERIAL
Publication number
20230392320
Publication date
Dec 7, 2023
VALMET AB
Maria WENNERSTRÖM
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
SHORT-SEQUENCE ECF BLEACHING PROCESS X/Z/D-EOP-D OR X/D/Z-EOP-D FOR...
Publication number
20230349098
Publication date
Nov 2, 2023
QILU UNIVERSITY OF TECHNOLOGY
Jiachuan CHEN
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD FOR PREPARING DISSOLVING PULP BY TCF BLEACHING OF POPLAR KP
Publication number
20210062420
Publication date
Mar 4, 2021
QILU UNIVERSITY OF TECHNOLOGY
Xingxiang JI
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Method For Preparing Dissolving Pulp By Totally Chlorine-Free Bleac...
Publication number
20210062419
Publication date
Mar 4, 2021
QILU UNIVERSITY OF TECHNOLOGY
Zhongjian TIAN
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
RECYCLED PULP, ABSORBENT, NON-WOVEN FABRIC, AND SANITARY ARTICLE
Publication number
20200376718
Publication date
Dec 3, 2020
UNICHARM CORPORATION
Takayoshi Konishi
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Application
METHOD FOR MANUFACTURING RECYCLED PULP FROM USED SANITARY PRODUCTS
Publication number
20200217013
Publication date
Jul 9, 2020
UNICHARM CORPORATION
Takayoshi KONISHI
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information
Patent Application
METHOD FOR MANUFACTURING RECYCLED PULP FROM USED SANITARY PRODUCTS
Publication number
20200173104
Publication date
Jun 4, 2020
UNICHARM CORPORATION
Takayoshi KONISHI
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information
Patent Application
CELLULOSE FIBERS
Publication number
20200063293
Publication date
Feb 27, 2020
RE:NEWCELL AB
LINDSTRÖM Mikael
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Application
METHOD FOR LIGNIN DEPOLYMERISATION
Publication number
20190271112
Publication date
Sep 5, 2019
METGEN OY
Klara Birikh
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD FOR EXTRACTING CELLUSOSE, HEMICELLULOSE AND LIGNIN FROM LIGN...
Publication number
20190249363
Publication date
Aug 15, 2019
CLARIANT INTERNATIONAL LTD
Manuela FRICK
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Application
OZONE GENERATOR WITH POSITION-DEPENDENT DISCHARGE DISTRIBUTION
Publication number
20190010051
Publication date
Jan 10, 2019
XYLEM IP MANAGEMENT S.à r.l.
Ralf FIEKENS
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
APPARATUS AND METHOD FOR THE TREATMENT OF A SUBSTRATE WITH OZONE BU...
Publication number
20180134994
Publication date
May 17, 2018
Xeros Limited
John Edward STEELE
A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information
Patent Application
PROCESS FOR THE PRODUCTION OF A TREATED PULP, TREATED PULP, AND TEX...
Publication number
20170314197
Publication date
Nov 2, 2017
INNVENTIA AB
Elisabeth Bergnor
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Application
PROCESS FOR PRETREATING RECLAIMED COTTON FIBERS TO BE USED IN THE P...
Publication number
20170284023
Publication date
Oct 5, 2017
Lenzing AG
Christian Weilach
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Application
METHODS FOR OXYGEN DELIGNIFICATION AND OZONE BLEACHING OF PULP
Publication number
20170175329
Publication date
Jun 22, 2017
Nicole Rumore
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
PROCESS FOR PRETREATING RECLAIMED COTTON FIBERS TO BE USED IN THE P...
Publication number
20160237619
Publication date
Aug 18, 2016
Lenzing AG
Christian Weilach
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Application
METHOD FOR MANUFACTURING PAPERMAKING PULP
Publication number
20120118518
Publication date
May 17, 2012
Christophe Calais
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Method for Preparing Nonwood Fiber Paper
Publication number
20120006501
Publication date
Jan 12, 2012
Jeff Golfman
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Process in a (D) stage bleaching of softwood pulps in a presence of...
Publication number
20110265964
Publication date
Nov 3, 2011
International Paper Company
CAIFANG YIN
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Process of bleaching hardwood pulps in a D1 or D2 stage in a presen...
Publication number
20110240238
Publication date
Oct 6, 2011
International Paper Company
CAIFANG YIN
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD FOR MANUFACTURING MECHANICAL PULP AND USE OF THE MECHANICAL...
Publication number
20110214825
Publication date
Sep 8, 2011
ITT Manufacturing Enterprises,Inc.
Ernst-Martin Billing
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD FOR MANUFACTURING MECHANICAL PULP
Publication number
20110036523
Publication date
Feb 17, 2011
UPM-Kymmene Corporation
Esko Härkönen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
PROCESS FOR PRODUCTION OF BLEACHED PULP
Publication number
20100314056
Publication date
Dec 16, 2010
Mitsubishi Gas Chemical Company, Inc.
Kiyoshi Yoshida
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD IN CONNECTION WITH THE WASHING OF PULP AT A CHEMICAL PULP MILL
Publication number
20100243183
Publication date
Sep 30, 2010
ANDRITZ OY
Janne Vehmaa
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
PROCESS OF BLEACHING A WOOD PULP
Publication number
20100224336
Publication date
Sep 9, 2010
UNIVERSITY OF MAINE SYSTEM BOARD OF TRUSTEES
Dwane Scott Hutto
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD FOR BLEACHING CHEMICAL PAPER PULPS BY FINAL OZONE TREATMENT...
Publication number
20100065233
Publication date
Mar 18, 2010
ITT Manufacturing Enterprises, Inc.
Guillaume Pipon
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
PROCESSES AND SYSTEMS FOR THE BLEACHING OF LIGNOCELLULOSIC PULPS FO...
Publication number
20090032208
Publication date
Feb 5, 2009
ANDRITZ INC.
Pam O'Leary
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Bleaching process with at least one extraction stage
Publication number
20090000751
Publication date
Jan 1, 2009
Caifang Yin
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Process in a (D) stage bleaching of softwood pulps in a presence of...
Publication number
20080142174
Publication date
Jun 19, 2008
Caifang Yin
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Process in a (D) stage bleaching of hardwood pulps in a presence of...
Publication number
20080142175
Publication date
Jun 19, 2008
Caifang Yin
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE