Retention agents or drainage improvers

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CPC
D21H21/10

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Parent Industries

DTEXTILES PAPER D21Papermaking D21HPULP 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 D21H21/00Non-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

D21H21/10Retention agents or drainage improvers

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Method for manufacturing paper and cardboard
- Patent number 12,234,609
- Issue date Feb 25, 2025
- SNF GROUP
- Gatien Faucher
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Treated article, methods of making the treated article, and dispers...
- Patent number 12,209,364
- Issue date Jan 28, 2025
- AGC Chemicals Americas, Inc.
- Tess Duffin Crosetto
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Grant
Method of making paper or board products
- Patent number 12,203,223
- Issue date Jan 21, 2025
- FIBERLEAN TECHNOLOGIES, LTD.
- Per Svending
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for manufacturing paper or cardboard
- Patent number 12,195,920
- Issue date Jan 14, 2025
- SNF GROUP
- Cyril Barriere
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Articles of manufacture comprising nanocellulose elements
- Patent number 12,122,980
- Issue date Oct 22, 2024
- Soane Materials LLC
- David S. Soane
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Grant
Cellulosic fiber additive formed from Kombucha biofilms
- Patent number 12,098,508
- Issue date Sep 24, 2024
- Shaun Moshasha
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Treated article, methods of making the treated article, and dispers...
- Patent number 12,000,090
- Issue date Jun 4, 2024
- AGC Chemicals Americas, Inc.
- Tess Duffin Crosetto
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Grant
Articles of manufacture comprising nanocellulose elements
- Patent number 11,932,829
- Issue date Mar 19, 2024
- Soane Materials LLC
- David S. Soane
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Tissue paper with reduced fiber and methods of manufacture
- Patent number 11,932,994
- Issue date Mar 19, 2024
- North Carolina State University
- Ronalds W. Gonzalez
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Process of making paper and paperboard products
- Patent number 11,846,072
- Issue date Dec 19, 2023
- FiberLean Technologies Limited
- Per Svending
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Articles of manufacture comprising nanocellulose elements
- Patent number 11,795,420
- Issue date Oct 24, 2023
- Soane Materials LLC
- David S. Soane
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Grant
Method of making paper or board products
- Patent number 11,732,421
- Issue date Aug 22, 2023
- FiberLean Technologies Limited
- Per Svending
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of manufacturing of a foam-formed cellulosic fibre-material,...
- Patent number 11,692,313
- Issue date Jul 4, 2023
- Tetra Laval Holdings & Finance S.A.
- Mats Aldén
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Method for producing multi-layer paper
- Patent number 11,680,371
- Issue date Jun 20, 2023
- Solenis Technologies, L.P.
- Christoph Hamers
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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 for producing polymer solutions
- Patent number 11,518,695
- Issue date Dec 6, 2022
- Kemira Oyj
- Asko Karppi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for production of filler loaded surface enhanced pulp fibers
- Patent number 11,499,269
- Issue date Nov 15, 2022
- Domtar Paper Company LLC
- Harshad Pande
- 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
Methods for making repulpable paper strings and straps through pult...
- Patent number 11,434,608
- Issue date Sep 6, 2022
- Enterprises International, Inc.
- Halim Chtourou
- D02 - YARNS MECHANICAL FINISHING OF YARNS OR ROPES WARPING OR BEAMING
Information Patent Grant
Method of and an arrangement for adding a chemical to an approach f...
- Patent number 11,352,749
- Issue date Jun 7, 2022
- WETEND TECHNOLOGY OY
- Jouni Matula
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Polymer product for improving retention of hydrophobic internal siz...
- Patent number 11,339,539
- Issue date May 24, 2022
- Kemira Oyj
- Timo Valkealaakso
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Ethyleneimine polymer solution and method for producing same
- Patent number 11,332,616
- Issue date May 17, 2022
- Nippon Shokubai Co., Ltd.
- Seiichi Suzuki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for production of film comprising microfibrillated cellulose
- Patent number 11,319,671
- Issue date May 3, 2022
- Stora Enso Oyj
- Kaj Backfolk
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for production of a product comprising a first ply
- Patent number 11,319,672
- Issue date May 3, 2022
- Stora Enso Oyj
- Kaj Backfolk
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Methods and apparatus for manufacturing fiber-based meat containers
- Patent number 11,306,440
- Issue date Apr 19, 2022
- Footprint International, LLC
- Yoke Dou Chung
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Composition comprising cross-linked anionic, organic polymeric micr...
- Patent number 11,306,441
- Issue date Apr 19, 2022
- Solenis Technologies, L.P.
- Christian Jehn-Rendu
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Paper and paperboard products
- Patent number 11,274,399
- Issue date Mar 15, 2022
- FiberLean Technologies Limited
- Per Svending
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Polymer, method for producing polymer and polymer flocculant
- Patent number 11,261,276
- Issue date Mar 1, 2022
- MITSUBISHI CHEMICAL CORPORATION
- Kazunori Mukunoki
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for producing cellulose pulp, cellulose pulp and use thereof...
- Patent number 11,248,344
- Issue date Feb 15, 2022
- Suzano S.A.
- Otávio Mambrim Filho
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Surface treatment composition, its use and a method for producing p...
- Patent number 11,208,766
- Issue date Dec 28, 2021
- Kemira Oyj
- Yuping Luo
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Patents Applicationslast 30 patents

Information Patent Application
Articles of Manufacture Comprising Nanocellulose Elements
- Publication number 20250092338
- Publication date Mar 20, 2025
- Soane Materials LLC
- David S. Soane
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Application
Articles of Manufacture Comprising Nanocellulose Elements
- Publication number 20250075154
- Publication date Mar 6, 2025
- Soane Materials LLC
- David S. Soane
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Application
Articles of Manufacture Comprising Nanocellulose Elements
- Publication number 20250066699
- Publication date Feb 27, 2025
- Soane Materials LLC
- David S. Soane
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Application
Kombucha Cellulose-based Derivative Refined from a Symbiotic Colony...
- Publication number 20250012013
- Publication date Jan 9, 2025
- Shaun Moshasha
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
DRAINAGE AIDS AND THE USE THEREOF
- Publication number 20240384472
- Publication date Nov 21, 2024
- ECOLAB USA INC.
- Prasad Duggirala
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
CELLULOSIC FIBER MATERIAL AND PROCESS
- Publication number 20240384475
- Publication date Nov 21, 2024
- Papershell AB
- Anders BREITHOLTZ
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
METHOD FOR MANUFACTURING PAPER AND CARDBOARD
- Publication number 20240376672
- Publication date Nov 14, 2024
- SNF Group
- Cyril BARRIERE
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
DISPERSIBLE PAPER, METHOD FOR PRODUCING SAME, PACKAGING AND USE OF...
- Publication number 20240344274
- Publication date Oct 17, 2024
- Klabin S.A.
- Guilherme GIESEL
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
ADDITIVE COMPOSITIONS FOR PAPERMAKING
- Publication number 20240337070
- Publication date Oct 10, 2024
- Solenis Technologies, L.P.
- Daniel M. Henn
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
TREATED ARTICLE, METHODS OF MAKING THE TREATED ARTICLE, AND DISPERS...
- Publication number 20240301627
- Publication date Sep 12, 2024
- AGC Chemicals Americas, Inc.
- Tess Duffin Crosetto
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Application
MEMBRANE SEPARATION PROCESS FOR VINYLAMINE-CONTAINING POLYMERS
- Publication number 20240287742
- Publication date Aug 29, 2024
- Solenis Technologies, L.P.
- Cecil Coutinho
- C07 - ORGANIC CHEMISTRY
Information Patent Application
FLUTING OR LINER COMPRISING NSSC PULP
- Publication number 20240240403
- Publication date Jul 18, 2024
- STORA ENSO OYJ
- Isto Heiskanen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
MULTIPLY CONTAINERBOARD FOR USE IN CORRUGATED BOARD
- Publication number 20240240406
- Publication date Jul 18, 2024
- STORA ENSO OYJ
- Isto Heiskanen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
METHOD FOR OBTAINING A BIO-SOURCED-MONOMER FROM RENEWABLE DIMETHYLA...
- Publication number 20240239933
- Publication date Jul 18, 2024
- SNF Group
- Cédrick FAVERO
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
A method for producing cationic saccharides
- Publication number 20240217848
- Publication date Jul 4, 2024
- KEMIRA OYJ
- Jaakko HILTUNEN
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
METHOD FOR MANUFACTURING PAPER AND CARDBOARD
- Publication number 20240200270
- Publication date Jun 20, 2024
- Cyril BARRIERE
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
METHOD OF PAPER AND PAPERBOARD PRODUCTS
- Publication number 20240133123
- Publication date Apr 25, 2024
- FiberLean Technologies Limited
- Per SVENDING
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
PAPER AND PAPERBOARD PRODUCTS
- Publication number 20240102249
- Publication date Mar 28, 2024
- FiberLean Technologies Limited
- Per SVENDING
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
PROCESS FOR MANUFACTURING PAPER OR CARDBOARD
- Publication number 20240044082
- Publication date Feb 8, 2024
- SNF Group
- Cyril BARRIERE
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
TREATED ARTICLE, METHODS OF MAKING THE TREATED ARTICLE, AND DISPERS...
- Publication number 20240003089
- Publication date Jan 4, 2024
- AGC Chemicals Americas, Inc.
- Tess Duffin Crosetto
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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
METHOD FOR MANUFACTURING PAPER AND CARDBOARD
- Publication number 20230295877
- Publication date Sep 21, 2023
- S.P.C.M. SA
- Gatien FAUCHER
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
NOVEL WATER-SOLUBLE POLYMER COMPLEXES IN THE FORM OF AN INVERSE EMU...
- Publication number 20230243103
- Publication date Aug 3, 2023
- S.P.C.M. SA
- René HUND
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
ARTICLES OF MANUFACTURE COMPRISING NANOCELLULOSE ELEMENTS
- Publication number 20230227758
- Publication date Jul 20, 2023
- Soane Materials LLC
- David S. Soane
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Application
NOVEL SULFOBETAINE MONOMERS, PROCESS FOR PREPARING SAME, AND USES T...
- Publication number 20230183174
- Publication date Jun 15, 2023
- S.P.C.M. SA
- Johann KIEFFER
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
FIBERBOARD MANUFACTURED WITH CELLULOSE NANOFIBRILS AS A BINDER AND...
- Publication number 20230167607
- Publication date Jun 1, 2023
- W.R. Meadows, Inc.
- Mark W. Custer
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
METHOD FOR ON-SITE GLYOXYLATION OF POLYACRYLAMIDE
- Publication number 20230129116
- Publication date Apr 27, 2023
- KEMIRA OYJ
- Asko KARPPI
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
METHOD FOR PRODUCTION OF FILLER LOADED SURFACE ENHANCED PULP FIBERS
- Publication number 20230084180
- Publication date Mar 16, 2023
- Domtar Paper Company, LLC
- Harshad Pande
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
PRODUCT CONTAINING AN ANIONIC CELLULOSE DERIVATIVE AND ITS USE IN P...
- Publication number 20230053998
- Publication date Feb 23, 2023
- KEMIRA OYJ
- Mikko VIRTANEN
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
COMPOSITION AND ITS USE FOR USE IN MANUFACTURE OF PAPER, BOARD OR T...
- Publication number 20230024255
- Publication date Jan 26, 2023
- KEMIRA OYJ
- Matti HIETANIEMI
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Retention agents or drainage improvers

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Method for manufacturing paper and cardboard

Treated article, methods of making the treated article, and dispers...

Method of making paper or board products

Process for manufacturing paper or cardboard

Articles of manufacture comprising nanocellulose elements

Cellulosic fiber additive formed from Kombucha biofilms

Treated article, methods of making the treated article, and dispers...

Articles of manufacture comprising nanocellulose elements

Tissue paper with reduced fiber and methods of manufacture

Process of making paper and paperboard products

Articles of manufacture comprising nanocellulose elements

Method of making paper or board products

Method of manufacturing of a foam-formed cellulosic fibre-material,...

Method for producing multi-layer paper

Method for manufacture of paper or board and paper or board obtaine...

Method for producing polymer solutions

Method for production of filler loaded surface enhanced pulp fibers

Softener composition

Methods for making repulpable paper strings and straps through pult...

Method of and an arrangement for adding a chemical to an approach f...

Polymer product for improving retention of hydrophobic internal siz...

Ethyleneimine polymer solution and method for producing same

Process for production of film comprising microfibrillated cellulose

Method for production of a product comprising a first ply

Methods and apparatus for manufacturing fiber-based meat containers

Composition comprising cross-linked anionic, organic polymeric micr...

Paper and paperboard products

Polymer, method for producing polymer and polymer flocculant

Method for producing cellulose pulp, cellulose pulp and use thereof...

Surface treatment composition, its use and a method for producing p...

Patents Applicationslast 30 patents

Articles of Manufacture Comprising Nanocellulose Elements

Articles of Manufacture Comprising Nanocellulose Elements

Articles of Manufacture Comprising Nanocellulose Elements

Kombucha Cellulose-based Derivative Refined from a Symbiotic Colony...

DRAINAGE AIDS AND THE USE THEREOF

CELLULOSIC FIBER MATERIAL AND PROCESS

METHOD FOR MANUFACTURING PAPER AND CARDBOARD

DISPERSIBLE PAPER, METHOD FOR PRODUCING SAME, PACKAGING AND USE OF...

ADDITIVE COMPOSITIONS FOR PAPERMAKING

TREATED ARTICLE, METHODS OF MAKING THE TREATED ARTICLE, AND DISPERS...

MEMBRANE SEPARATION PROCESS FOR VINYLAMINE-CONTAINING POLYMERS

FLUTING OR LINER COMPRISING NSSC PULP

MULTIPLY CONTAINERBOARD FOR USE IN CORRUGATED BOARD

METHOD FOR OBTAINING A BIO-SOURCED-MONOMER FROM RENEWABLE DIMETHYLA...

A method for producing cationic saccharides

METHOD FOR MANUFACTURING PAPER AND CARDBOARD

METHOD OF PAPER AND PAPERBOARD PRODUCTS

PAPER AND PAPERBOARD PRODUCTS

PROCESS FOR MANUFACTURING PAPER OR CARDBOARD

TREATED ARTICLE, METHODS OF MAKING THE TREATED ARTICLE, AND DISPERS...

Sanitary Tissue Products Comprising Once-Dried Fibers

METHOD FOR MANUFACTURING PAPER AND CARDBOARD

NOVEL WATER-SOLUBLE POLYMER COMPLEXES IN THE FORM OF AN INVERSE EMU...

ARTICLES OF MANUFACTURE COMPRISING NANOCELLULOSE ELEMENTS

NOVEL SULFOBETAINE MONOMERS, PROCESS FOR PREPARING SAME, AND USES T...

FIBERBOARD MANUFACTURED WITH CELLULOSE NANOFIBRILS AS A BINDER AND...

METHOD FOR ON-SITE GLYOXYLATION OF POLYACRYLAMIDE

METHOD FOR PRODUCTION OF FILLER LOADED SURFACE ENHANCED PULP FIBERS

PRODUCT CONTAINING AN ANIONIC CELLULOSE DERIVATIVE AND ITS USE IN P...

COMPOSITION AND ITS USE FOR USE IN MANUFACTURE OF PAPER, BOARD OR T...