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D21F1/20
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Parent Industries
D
TEXTILES PAPER
D21
Papermaking
D21F
PAPER-MAKING MACHINES METHODS OF PRODUCING PAPER THEREON
D21F1/00
Wet end of machines for making continuous webs of paper
Current Industry
D21F1/20
in fourdrinier machines
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Patents Grants
last 30 patents
Information
Patent Grant
Paper products having increased bending stiffness and cross-directi...
Patent number
12,146,264
Issue date
Nov 19, 2024
International Paper Company
John Mullaney Meazle
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Paper products having increased bending stiffness and cross-directi...
Patent number
11,441,268
Issue date
Sep 13, 2022
International Paper Company
John Mullaney Meazle
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Shake mechanism for glass mat production line
Patent number
7,597,779
Issue date
Oct 6, 2009
Building Materials Investment Corporation
Hemant Gupta
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Equipment for moving the roll of a paper machine
Patent number
7,520,963
Issue date
Apr 21, 2009
Metso Paper, Inc.
Tapani Honkanen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Apparatus for treating a wire or a felt band in a papermaking insta...
Patent number
7,175,744
Issue date
Feb 13, 2007
Klaus Bartelmuss
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method and apparatus for forming a paper or tissue web
Patent number
7,169,262
Issue date
Jan 30, 2007
Vibre-Tech LLC
Michael J. Bricco
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method and apparatus for forming a paper or tissue web
Patent number
7,101,462
Issue date
Sep 5, 2006
Vibre-Tech, LLC
Michael J. Bricco
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method and apparatus for forming a paper or tissue web
Patent number
6,702,925
Issue date
Mar 9, 2004
Vibre-Tech LLC
Michael J Bricco
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Apparatus and method of generating stock turbulence in a fourdrinie...
Patent number
6,126,786
Issue date
Oct 3, 2000
James D. White
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Paper forming activity blade
Patent number
6,030,501
Issue date
Feb 29, 2000
Thermo Fibertek Inc.
John A Neun
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Velocity induced drainage method and unit
Patent number
5,951,823
Issue date
Sep 14, 1999
Thermo Fibertek Inc.
Luis Fernando Cabrera y Lopez Caram
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Paper forming activity blade with mounting buttons
Patent number
5,932,072
Issue date
Aug 3, 1999
Thermo Fibertek Inc.
John A Neun
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Paper forming activity control with lifting variable inertial stimu...
Patent number
5,922,173
Issue date
Jul 13, 1999
Thermo Fibertek Inc.
John A Neun
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Velocity induced drainage method and unit
Patent number
5,830,322
Issue date
Nov 3, 1998
Thermo Fibertek Inc.
Luis Fernando Cabrera y Lopez Caram
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Under felt inclined flat former to produce multilayer or monolayer...
Patent number
5,820,735
Issue date
Oct 13, 1998
Smurfit Carton y Papel De Mexico
Luis Fernando Cabrera Y Lopez Caram
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Under felt inclined flat former to produce multilayer or monolayer...
Patent number
5,766,420
Issue date
Jun 16, 1998
Smurfut Carton y Papel De Mexico
Luis Fernando Cabrera y Lopez Caram
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Paper machine including a hydraulic cylinder assembly with a non-me...
Patent number
5,759,354
Issue date
Jun 2, 1998
Voith Sulzer Paper Technology North America, Inc.
Edwin X. Graf
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Formation in a two fabric paper machine
Patent number
5,735,330
Issue date
Apr 7, 1998
JWI Ltd.
Werner Buchmann
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Activity induction in papermaking
Patent number
5,681,430
Issue date
Oct 28, 1997
Thermo Fibertek Inc.
John Neun
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Cross direction fiber movement and dewatering device
Patent number
5,562,807
Issue date
Oct 8, 1996
Mark R. Baluha
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Hydraulically actuated breast roll shake
Patent number
5,560,808
Issue date
Oct 1, 1996
Voith Sulzer Papiermaschinen GmbH
Edwin X. Graf
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Turbulence roll for a web former
Patent number
5,306,394
Issue date
Apr 26, 1994
A. Ahlstrom Corporation
Paul O. Meinander
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Dispersion roll in a fourdrinier machine
Patent number
4,999,086
Issue date
Mar 12, 1991
Edmund N. Marx
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Skimming blade with wave shaped troughs for a papermaking machine
Patent number
4,789,433
Issue date
Dec 6, 1988
Feldmuehle Aktiengesellschaft
Karl-Dieter Fuchs
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Forming board elements
Patent number
4,532,009
Issue date
Jul 30, 1985
Albany International
Leslie F. Nickerson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Eccentric-operated vibrating apparatus
Patent number
4,485,693
Issue date
Dec 4, 1984
Oy Tampella AB
Hannu Heikkila
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Pulp agitating device and method having multiple protruding inserts
Patent number
4,420,370
Issue date
Dec 13, 1983
JWI Ltd.
Nabil R. Saad
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method and apparatus for forming paper
Patent number
4,306,934
Issue date
Dec 22, 1981
Erkki O. Seppanen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Forming paper using a curved fin to facilitate web transfer
Patent number
4,243,482
Issue date
Jan 6, 1981
Erkki O. Seppanen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Stock formation in a paper making process
Patent number
4,140,573
Issue date
Feb 20, 1979
JWI Ltd.
Henry Johnson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Patents Applications
last 30 patents
Information
Patent Application
METHOD FOR MANUFACTURING A FILM COMPRISING HIGHLY REFINED CELLULOSE...
Publication number
20230313464
Publication date
Oct 5, 2023
STORA ENSO OYJ
Anna Kauppi
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
PAPER PRODUCTS HAVING INCREASED BENDING STIFFNESS AND CROSS-DIRECTI...
Publication number
20230250582
Publication date
Aug 10, 2023
International Paper Company
John Mullaney Meazle
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
PAPER PRODUCTS HAVING INCREASED BENDING STIFFNESS AND CROSS-DIRECTI...
Publication number
20190211503
Publication date
Jul 11, 2019
International Paper Company
John Mullaney Meazle
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
DRAINAGE FOIL FOR USE IN AN INSTALLATION FOR PRODUCING A PAPER WEB...
Publication number
20190062995
Publication date
Feb 28, 2019
Klaus Bartelmuss
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Equipment for moving the roll of a paper machine
Publication number
20070101817
Publication date
May 10, 2007
Tapani Honkanen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Method and apparatus for forming a paper or tissue web
Publication number
20070068644
Publication date
Mar 29, 2007
Vibre-Tech, LLC.
Michael J. Bricco
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Shake mechanism for glass mat production line
Publication number
20060249267
Publication date
Nov 9, 2006
Hemant Gupta
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Apparatus for treating a wire or a felt band in a papermaking insta...
Publication number
20040163787
Publication date
Aug 26, 2004
Klaus Bartelmuss
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Method and apparatus for forming a paper or tissue web
Publication number
20040149415
Publication date
Aug 5, 2004
Vibre-Tech LLC
Michael J. Bricco
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Method and apparatus for forming a paper or tissue web
Publication number
20040140077
Publication date
Jul 22, 2004
Michael J. Bricco
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
System and method of using acoustic foil for enhanced dewatering an...
Publication number
20020121354
Publication date
Sep 5, 2002
Cyrus K. Aidun
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Method and apparatus for forming a paper or tissue web
Publication number
20020079076
Publication date
Jun 27, 2002
Michael J. Bricco
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE