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CPC
D21H21/20
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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
D21H21/00
Non-fibrous material added to the pulp, characterised by its function, form or properties Paper-impregnating or coating material, characterised by its function, form or properties
Current Industry
D21H21/20
Wet strength agents
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Patents Grants
last 30 patents
Information
Patent Grant
Soft tissue produced using a structured fabric and energy efficient...
Patent number
11,959,226
Issue date
Apr 16, 2024
First Quality Tissue, LLC
Byrd Tyler Miller
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Wet laid disposable absorbent structures with high wet strength and...
Patent number
11,952,721
Issue date
Apr 9, 2024
First Quality Tissue, LLC
James E. Sealey
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Low molecular weight dry powder polymer for use as paper-making dry...
Patent number
11,939,309
Issue date
Mar 26, 2024
Ecolab USA Inc.
Heqing Huang
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Fibrous structures
Patent number
11,879,215
Issue date
Jan 23, 2024
The Procter & Gamble Company
Fei Wang
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Fibrous structure-containing articles that exhibit consumer relevan...
Patent number
11,858,245
Issue date
Jan 2, 2024
The Procter & Gamble Company
Christopher Michael Young
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Paper strength improvement using metal chelates and synthetic catio...
Patent number
11,834,792
Issue date
Dec 5, 2023
Kemira Oyj
Clayton Campbell
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method of manufacturing sanitary paper for dog feces and sanitary p...
Patent number
11,821,144
Issue date
Nov 21, 2023
MORRIS & COCO., LTD.
Tae Bong Jung
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Sound absorbing and insulating member and method for manufacturing...
Patent number
11,807,994
Issue date
Nov 7, 2023
Toyota Shatai Kabushiki Kaisha
Makoto Segi
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Soft tissue produced using a structured fabric and energy efficient...
Patent number
11,807,992
Issue date
Nov 7, 2023
First Quality Tissue, LLC
Byrd Tyler Miller
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Methods of making multi-ply fibrous sheets
Patent number
11,781,270
Issue date
Oct 10, 2023
GPCP IP Holdings LLC
Peter Gordon Anderson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Increasing paper strength by surface treatment
Patent number
11,781,271
Issue date
Oct 10, 2023
S.P.C.M. SA
Gatien Faucher
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Wet laid disposable absorbent structures with high wet strength and...
Patent number
11,751,728
Issue date
Sep 12, 2023
First Quality Tissue, LLC
James E. Sealey
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method of producing absorbent structures with high wet strength, ab...
Patent number
11,725,345
Issue date
Aug 15, 2023
STRUCTURED I, LLC
James E. Sealey
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Fibrous structure-containing articles that exhibit consumer relevan...
Patent number
11,707,912
Issue date
Jul 25, 2023
The Procter & Gamble Company
Christopher Michael Young
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Fibrous structure-containing articles that exhibit consumer relevan...
Patent number
11,701,858
Issue date
Jul 18, 2023
The Procter & Gamble Company
Christopher Michael Young
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Fibrous structure-containing articles that exhibit consumer relevan...
Patent number
11,691,380
Issue date
Jul 4, 2023
The Procter & Gamble Company
Christopher Michael Young
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Fibrous structure-containing articles that exhibit consumer relevan...
Patent number
11,685,138
Issue date
Jun 27, 2023
The Procter & Gamble Company
Christopher Michael Young
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Fibrous structure-containing articles that exhibit consumer relevan...
Patent number
11,673,365
Issue date
Jun 13, 2023
The Procter & Gamble Company
Christopher Michael Young
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Absorbent paper products having unique physical strength properties
Patent number
11,674,267
Issue date
Jun 13, 2023
Mercer International Inc.
Tobias Ziegenbein
B32 - LAYERED PRODUCTS
Information
Patent Grant
Soft, low lint, through air dried tissue and method of forming the...
Patent number
11,674,266
Issue date
Jun 13, 2023
First Quality Tissue, LLC
James E. Sealey
B32 - LAYERED PRODUCTS
Information
Patent Grant
Absorbent paper products having unique physical strength properties
Patent number
11,668,053
Issue date
Jun 6, 2023
Mercer International Inc.
Tobias Ziegenbein
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Fibrous structure-containing articles that exhibit consumer relevan...
Patent number
11,667,103
Issue date
Jun 6, 2023
The Procter & Gamble Company
Christopher Michael Young
B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
Information
Patent Grant
Soft, low lint, through air dried tissue and method of forming the...
Patent number
11,668,052
Issue date
Jun 6, 2023
First Quality Tissue, LLC
James E. Sealey
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Paper tissue with high bulk and low lint
Patent number
11,591,755
Issue date
Feb 28, 2023
Kimberly-Clark Worldwide, Inc.
Jian Qin
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Fibrous structure-containing articles
Patent number
11,591,754
Issue date
Feb 28, 2023
The Procter & Gamble Company
Christopher Michael Young
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Inorganic particle composite fiber, method for manufacturing same,...
Patent number
11,555,270
Issue date
Jan 17, 2023
Nippon Paper Industries Co., Ltd.
Moe Fukuoka
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Manufacture of absorbent paper with low charge density imidazoliniu...
Patent number
11,542,662
Issue date
Jan 3, 2023
GPCP IP Holdings LLC
Yu Chen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Softener composition
Patent number
11,492,760
Issue date
Nov 8, 2022
Kemira Oyj
Chen Lu
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Composition of matter in a post-refiner blend zone
Patent number
11,492,757
Issue date
Nov 8, 2022
Eastman Chemical Company
Charles Stuart Everett
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Creped fibrous structures
Patent number
11,486,097
Issue date
Nov 1, 2022
The Procter & Gamble Company
Fei Wang
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Patents Applications
last 30 patents
Information
Patent Application
WET LAID DISPOSABLE ABSORBENT STRUCTURES WITH HIGH WET STRENGTH AND...
Publication number
20240125051
Publication date
Apr 18, 2024
FIRST QUALITY TISSUE, LLC
James E. Sealey II
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
WET LAID DISPOSABLE ABSORBENT STRUCTURES WITH HIGH WET STRENGTH AND...
Publication number
20240023765
Publication date
Jan 25, 2024
FIRST QUALITY TISSUE, LLC
James E. Sealey
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
COATED PAPERBOARD FOR BEVERAGE CONTAINER CARRIERS AND CORRESPONDING...
Publication number
20240010405
Publication date
Jan 11, 2024
STORA ENSO OYJ
Carl-Henrik Ljungqvist
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
MULTI-PLY PAPER RODUCTS AND METHODS OF MAKING LOW LINT MULTI-PLY PA...
Publication number
20230407566
Publication date
Dec 21, 2023
GPCP IP Holdings LLC
Peter G. Anderson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
WET LAID DISPOSABLE ABSORBENT STRUCTURES WITH HIGH WET STRENGTH AND...
Publication number
20230407573
Publication date
Dec 21, 2023
FIRST QUALITY TISSUE, LLC
James E. Sealey
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
WET LAID PAPER AND PAPERBOARD PRODUCTS WITH HIGH WET STRENGTH AND M...
Publication number
20230407571
Publication date
Dec 21, 2023
FIRST QUALITY TISSUE, LLC
James E. Sealey
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
ABSORBENT PAPER PRODUCTS HAVING UNIQUE PHYSICAL STRENGTH PROPERTIES
Publication number
20230383471
Publication date
Nov 30, 2023
Mercer International Inc.
Tobias Ziegenbein
B32 - LAYERED PRODUCTS
Information
Patent Application
Sanitary Tissue Products Comprising Once-Dried Fibers
Publication number
20230320540
Publication date
Oct 12, 2023
The Procter & Gamble Company
Christopher Michael YOUNG
A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information
Patent Application
ABSORBENT PAPER PRODUCTS HAVING UNIQUE PHYSICAL STRENGTH PROPERTIES
Publication number
20230323606
Publication date
Oct 12, 2023
Mercer International Inc.
Tobias Ziegenbein
B32 - LAYERED PRODUCTS
Information
Patent Application
GLYOXYLATED STARCH ADDITIVE FOR PULP PRODUCTS
Publication number
20230304226
Publication date
Sep 28, 2023
The Board of Trustees of Western Michigan University
Abdus Salam
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
MOBILE DISPERSION SYSTEM AND METHODS FOR THE RESUSPENSION OF DRIED...
Publication number
20230279612
Publication date
Sep 7, 2023
FiberLean Technologies Limited
Paymaan TAHAMTAN
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
FIBROUS STRUCTURE-CONTAINING ARTICLES THAT EXHIBIT CONSUMER RELEVAN...
Publication number
20230271402
Publication date
Aug 31, 2023
The Procter & Gamble Company
Christopher Michael Young
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Application
SOFT, LOW LINT, THROUGH AIR DRIED TISSUE AND METHOD OF FORMING THE...
Publication number
20230265616
Publication date
Aug 24, 2023
FIRST QUALITY TISSUE, LLC
James E. Sealey
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
FIBROUS STRUCTURE-CONTAINING ARTICLES THAT EXHIBIT CONSUMER RELEVAN...
Publication number
20230256705
Publication date
Aug 17, 2023
The Procter & Gamble Company
Christopher Michael Young
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Application
SAMPLE PAD FOR MEDICAL DIAGNOSIS KIT, AND PRODUCTION METHOD THEREFOR
Publication number
20230255528
Publication date
Aug 17, 2023
ENVIONEER CO., LTD
Seong Eun PARK
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Fibrous Elements and Fibrous Structures Employing Same
Publication number
20230228003
Publication date
Jul 20, 2023
The Procter & Gamble Company
Steven Lee Barnholtz
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
FIBROUS STRUCTURE-CONTAINING ARTICLES THAT EXHIBIT CONSUMER RELEVAN...
Publication number
20230226800
Publication date
Jul 20, 2023
The Procter & Gamble Company
Christopher Michael Young
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Application
PROCESS FOR MANUFACTURING WET STRENGTH RESINS
Publication number
20230203248
Publication date
Jun 29, 2023
KEMIRA OYJ
Xavier DE SEQUERA
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
CORRUGATED CARDBOARD, CORRUGATED BOX, AND METHOD FOR PACKAGING A WE...
Publication number
20230182981
Publication date
Jun 15, 2023
WestRock Shared Services, LLC
William T. McDonnell
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD, APPARATUS, AND SYSTEM OF A FIBRILLATED NANOCELLULOSE MATERIAL
Publication number
20230183924
Publication date
Jun 15, 2023
YIU WEN CHANG
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
FIBROUS STRUCTURE-CONTAINING ARTICLES
Publication number
20230167611
Publication date
Jun 1, 2023
The Procter & Gamble Company
Christopher Michael Young
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Application
GPAM COMPOSITIONS AND METHODS
Publication number
20230135892
Publication date
May 4, 2023
KEMIRA OYJ
Chen LU
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
FIBER-BASED CUP DESIGN, CHEMISTRY AND TOOLING
Publication number
20230138993
Publication date
May 4, 2023
Footprint LLC
Yoke Dou Chung
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
COMPOSITIONS AND METHODS FOR INCREASED WET AND DRY STRENGTH
Publication number
20230140638
Publication date
May 4, 2023
KEMIRA OYJ
Chen LU
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD OF PREPARING ALDEHYDE-FUNCTIONALIZED POLYMERS
Publication number
20230128251
Publication date
Apr 27, 2023
ECOLAB USA INC.
HERMAN MARK GRIMM
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
ABRASIVE BACKING AND METHOD OF MAKING SAME
Publication number
20230127264
Publication date
Apr 27, 2023
Neenah, Inc.
Peter J. Veverka
B24 - GRINDING POLISHING
Information
Patent Application
COMPOSITION AND METHOD FOR MANUFACTURE OF PAPER, BOARD OR THE LIKE
Publication number
20230122111
Publication date
Apr 20, 2023
KEMIRA OYJ
Kimmo Strengell
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Papermaking Agent, Manufacturing Method For Papermaking Agent and P...
Publication number
20230085796
Publication date
Mar 23, 2023
Arakawa Chemical Industries, Ltd.
Ryusuke Kambara
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
COMPOSITION FOR MANUFACTURING PAPER AND METHOD FOR MANUFACTURING PA...
Publication number
20230085774
Publication date
Mar 23, 2023
CJ CHEILJEDANG CORPORATION
Grace KIM
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
PAPER AIMED AT FORMING A U-STRAW
Publication number
20230072990
Publication date
Mar 9, 2023
AHLSTROM-MUNKSJÖ OYJ
Bertrand Morales
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE