D21B 1/16

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Class  D21B : FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT


Subclass 1/16: Fibrous raw materials or their mechanical treatment (beaters D21D 1/00) by dividing raw materials into small particles, e.g. fibres (breaking-up or cutting wood or the like by dry methods B27L; disintegrating peat C10F 7/02; obtaining fibres mechanically for spinning from rags, peat, or the like D01B) by wet methods, by the use of steam Disintegrating in mills (in general B02C) in the presence of chemical agents

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
11492737 Method for dissolving lignocellulosic biomassAug 19, 21Nov 08, 22UNITED ARAB EMIRATES UNIVERSITY
10988549 Method for producing cellulose nanofiber dry solidDec 22, 16Apr 27, 21Nippon Paper Industries Co Ltd.
10982387 Process for the production of nano-fibrillar cellulose suspensionsApr 11, 19Apr 20, 21FiberLean Technologies Limited
10975520 Fiber blend having high yield and enhanced pulp performance and method for making sameJul 24, 18Apr 13, 21WestRock MWV, LLC
10968322 Method for improved production of fermentable sugars from lignocellulosic biomass using additive and enzymeFeb 08, 19Apr 06, 21Indian Oil Corporation Limited; Council of Scientific & Industrial Research Department of Biotechnology;
10889674 Method of preparing a grafted copolymer of lignin and/or celluloseAug 24, 17Jan 12, 21BIOFIBER TECH SWEDEN AB
10683611 Method for simultaneously pressing and cutting a molded fiber partMar 25, 19Jun 16, 20Footprint International, LLC
10301774 Process for the production of nano-fibrillar cellulose suspensionsSep 02, 14May 28, 19FiberLean Technologies Limited
10240286 Die press assembly for drying and cutting molded fiber partsMay 26, 17Mar 26, 19Footprint International, LLC
10060075 Fiber blend having high yield and enhanced pulp performance and method for making sameApr 06, 15Aug 28, 18WestRock MWV, LLC
9725849 Method for pretreating cellulose pulpMar 09, 16Aug 08, 17UPM-KYMMENE CORPORATION
9315942 Method for pretreating cellulose pulpFeb 11, 13Apr 19, 16UPM-KYMMENE CORPORATION
9161556 Continuous cellulostic pre-treatment and bio-mass processing by reactive extrusionFeb 03, 12Oct 20, 15Not available
9139955 Method of processing chemical pulpJul 12, 11Sep 22, 15Not available
9115468 Chemical treatment of lignocellulosic fiber bundle material, and methods and systems relating theretoSep 27, 13Aug 25, 15ANDRITZ INC.
8871057 Process for the production of nano-fibrillar cellulose suspensionsMar 30, 10Oct 28, 14FIBERLEAN TECHNOLOGIES LIMITED
8833681 Method and apparatus for defibrillating cellulose fibersJun 23, 10Sep 16, 14BASF SE
8673113 Process for reducing specific energy demand during refining of thermomechanical and chemi-thermomechanical pulpJun 09, 10Mar 18, 14THE UNIVERSITY OF BRITISH COLUMBIA
8658405 Process for hydrolysis of wet fiber and method for producing fermentation products from wet fiberFeb 16, 11Feb 25, 14GRAIN PROCESSING CORPORATION
8282773 Method and system to enhance fiber development by addition of treatment agent during mechanical pulpingOct 24, 08Oct 09, 12ANDRITZ INC.

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2025/0027,270 A method, uses of the same, a pulp composition, and a systemAug 17, 22Jan 23, 25Not available
2024/0191,430 METHOD OF MAKING FIRE RETARDANT MATERIALS AND RELATED PRODUCTSJul 18, 23Jun 13, 24ClLEANFIBER INC..
2022/0074,138 METHOD FOR PRODUCING SOFTWOOD-DERIVED PULP FIBERS FOR PAPER AND SOFTWOOD-DERIVED PULP FIBERS FOR PAPERNov 19, 21Mar 10, 22Unicharm Corporation
2019/0218,711 Die Press Assembly For Drying and Cutting Molded Fiber PartsMar 25, 19Jul 18, 19Not available

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Patents Issued To Date - By Filing Year

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