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Addition before or during pulp beating or refining
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CPC
D21H23/16
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Parent Industries
D
TEXTILES PAPER
D21
Papermaking
D21H
PULP 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
D21H23/00
Processes or apparatus for adding material to the pulp or to the paper
Current Industry
D21H23/16
Addition before or during pulp beating or refining
Industries
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Organizations
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Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Method for manufacture of paper or board and paper or board obtaine...
Patent number
11,535,985
Issue date
Dec 27, 2022
Kemira Oyj
Yuping Luo
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
Toilet paper
Patent number
10,550,521
Issue date
Feb 4, 2020
Daio Paper Corporation
Takahisa Koroki
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for producing paper
Patent number
10,458,068
Issue date
Oct 29, 2019
Kemira Oyj
Chen Lu
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for making nanofibrillar cellulose and for making a paper pr...
Patent number
9,976,256
Issue date
May 22, 2018
UPM-Kymmene Corporation
Isko Kajanto
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
Fiber loading improvements in papermaking
Patent number
8,808,503
Issue date
Aug 19, 2014
John Klungness
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Papermaking process
Patent number
7,604,715
Issue date
Oct 20, 2009
Akzo Nobel N.V.
Jonas Liesén
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for fiber stock preparation
Patent number
7,179,347
Issue date
Feb 20, 2007
Voith Paper Patent GmbH
Joerg Rheims
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Paper web with pre-flocculated filler incorporated therein
Patent number
6,835,282
Issue date
Dec 28, 2004
Grain Processing Corporation
Richard D. Harvey
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Antimicrobially-treated fabrics
Patent number
6,712,121
Issue date
Mar 30, 2004
Kimberly-Clark Worldwide, Inc.
James W. Clark
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for treating a fibrous slurry of coated broke
Patent number
6,602,389
Issue date
Aug 5, 2003
Grain Processing Corporation
Richard D. Harvey
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Apparatus and method for chemically loading fibers in a fiber suspe...
Patent number
6,503,466
Issue date
Jan 7, 2003
Voith Sulzer Paper Technology North America, Inc.
Klaus Doelle
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for deflocculating and chemically loading fibers in a fiber...
Patent number
6,471,825
Issue date
Oct 29, 2002
Voith Sulzer Paper Technology North Amrica, Inc.
Klaus Doelle
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for producing paper and paperboard having high mechanical s...
Patent number
5,976,322
Issue date
Nov 2, 1999
Ausimont S.p.A.
Fausto Marzolini
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for treating fibrous cellulosic materials
Patent number
5,910,622
Issue date
Jun 8, 1999
DCV, Inc.
George L. Brodmann
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Method of preparing biodegradable, water-resistant, and molded pape...
Patent number
5,906,713
Issue date
May 25, 1999
Taiwan Suger Corporation
Wen-Fuei Yeh
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Manufacture of paper
Patent number
5,876,563
Issue date
Mar 2, 1999
Allied Colloids Limited
Graham Greenwood
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Biodegradable and water-resistant paper product
Patent number
5,863,388
Issue date
Jan 26, 1999
Taiwan Sugar Corporation
Wen-Fuei Yeh
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for dispersing cellulose based fibers in water
Patent number
5,849,155
Issue date
Dec 15, 1998
E. Khashoggi Industries, LLC
Stein Gasland
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Methods of manufacture for highly loaded fiber-based composite mate...
Patent number
5,824,364
Issue date
Oct 20, 1998
International Paper Company
Laurent Cousin
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Highly loaded fiber-based composite material
Patent number
5,731,080
Issue date
Mar 24, 1998
International Paper Company
Laurent Cousin
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method of preparing biodegradable, water-resistant paper utensils
Patent number
5,618,387
Issue date
Apr 8, 1997
Taiwan Sugar Corp.
Wen-Fuei Yeh
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Furnish composition
Patent number
5,328,179
Issue date
Jul 12, 1994
The Goodyear Tire & Rubber Company
Joel Muse
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Processes for the production of paper and paper board
Patent number
5,254,221
Issue date
Oct 19, 1993
Allied Colloids Limited
Peter Lowry
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for fiber loading a chemical compound
Patent number
5,223,090
Issue date
Jun 29, 1993
The United States of America as represented by the Secretary of Agriculture
John H. Klungness
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Processes for the production of paper and paper board
Patent number
5,185,061
Issue date
Feb 9, 1993
Allied Colloids Limited
Peter Lowry
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Preparation and synthesis of magnetic fibers
Patent number
5,143,583
Issue date
Sep 1, 1992
Robert H. Marchessault
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Retention and drainage aid for alkaline fine papermaking process
Patent number
5,126,014
Issue date
Jun 30, 1992
Nalco Chemical Company
Daniel K. Chung
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for sizing paper and similar products
Patent number
5,114,538
Issue date
May 19, 1992
Exxon Chemical Patents Inc.
Francesco Malatesta
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Patents Applications
last 30 patents
Information
Patent Application
Method for manufacture of paper or board and paper or board obtaine...
Publication number
20210002827
Publication date
Jan 7, 2021
KEMIRA OYJ
Yuping Luo
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD FOR PRODUCING PAPER
Publication number
20180051416
Publication date
Feb 22, 2018
KEMIRA OYJ
Chen LU
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Fiber loading improvements in papermaking
Publication number
20140360693
Publication date
Dec 11, 2014
John Klungness
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
PAPER PRODUCT AND A METHOD AND A SYSTEM FOR MANUFACTURING FURNISH
Publication number
20140338849
Publication date
Nov 20, 2014
Mika V. Kosonen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Fiber loading improvements in papermaking
Publication number
20100212853
Publication date
Aug 26, 2010
John Klungness
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
Method for Producing Paper, Paperboard and Cardboard in the Presenc...
Publication number
20080190576
Publication date
Aug 14, 2008
BASF Aktiengesellschaft
Simon Champ
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Method for charging a fiber suspension, and arrangement for carryin...
Publication number
20070131361
Publication date
Jun 14, 2007
Klaus Doelle
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Papermaking process
Publication number
20070107866
Publication date
May 17, 2007
Akzo Nobel N.V.
Jonas Liesen
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
Method for fiber stock preparation
Publication number
20040149403
Publication date
Aug 5, 2004
Joerg Rheims
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Antimicrobially-treated fabrics
Publication number
20040048768
Publication date
Mar 11, 2004
James W. Clark
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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
Antimicrobially-treated fabrics
Publication number
20030127207
Publication date
Jul 10, 2003
KIMBERLY-CLARK WORLDWIDE, INC.
James W. Clark
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information
Patent Application
Paper web with pre-flocculated filler incorporated therein
Publication number
20020100564
Publication date
Aug 1, 2002
Grain Processing Corporation
Richard D. Harvey
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Process for treating a fibrous slurry of coated broke
Publication number
20020088565
Publication date
Jul 11, 2002
Grain Processing Corporation
Richard D. Harvey
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE