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Pretreatment of the finely-divided materials before digesting
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TEXTILES PAPER
D21
Papermaking
D21C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS APPARATUS THEREFOR
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D21C1/00
Pretreatment of the finely-divided materials before digesting
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D21C1/02
with water or steam
D21C1/04
with acid reacting compounds
D21C1/06
with alkaline reacting compounds
D21C1/08
with oxygen-generating compounds
D21C1/10
Physical methods for facilitating impregnation
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last 30 patents
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Patent Grant
Catalyst free organosolv process, system and method for fractionati...
Patent number
12,359,372
Issue date
Jul 15, 2025
American Science and Technology
Ali Manesh
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Kraft pulping foul condensate treatment process and apparatus
Patent number
12,358,813
Issue date
Jul 15, 2025
Noram Engineering and Constructors Ltd.
Rohan Bandekar
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Patent Grant
Processes and systems for biomass impregnation to improve conversio...
Patent number
12,359,371
Issue date
Jul 15, 2025
GranBio Intellectual Property Holdings, LLC
Ryan Zebroski
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
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Patent Grant
Method for recycling waste aramid-mica composite paper
Patent number
12,351,982
Issue date
Jul 8, 2025
SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Zhaoqing Lu
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
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Patent Grant
System and method for refining agricultural fibers to a pulp specif...
Patent number
12,338,578
Issue date
Jun 24, 2025
Kanbol, Inc.
Miles Leach
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Grant
System for recovering heat from flue gas, control arrangement for u...
Patent number
12,338,996
Issue date
Jun 24, 2025
Valmet AB
Erik Wallin
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Grant
Method of replacing sodium losses in a pulp mill, a method of produ...
Patent number
12,331,460
Issue date
Jun 17, 2025
Metsa Fibre Oy
Ari Poukka
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Grant
Black liquor viscosity reducing and anti-scale agent
Patent number
12,331,461
Issue date
Jun 17, 2025
Ecolab USA Inc.
Luiz Wanderley Bratfisch Pace
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Grant
Method for manufacturing bleached pulp from a feedstock comprising...
Patent number
12,331,462
Issue date
Jun 17, 2025
WestRock MWV, LLC
Peter W. Hart
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Grant
Antifoam compositions comprising branched siloxanes formed by treat...
Patent number
12,325,773
Issue date
Jun 10, 2025
Wacker Chemie AG
John Young
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
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Methods and systems for processing mixed textile feedstock, isolati...
Patent number
12,319,790
Issue date
Jun 3, 2025
EVRNU, SPC
Stacy Flynn
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Determining one or more proportional particle group shares in flue...
Patent number
12,298,004
Issue date
May 13, 2025
Andritz Oy
Heikki Lappalainen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Grant
Method for preparing fluff pulp from bamboos and fluff pulp prepare...
Patent number
12,286,750
Issue date
Apr 29, 2025
South China University of Technology
Yichao Lei
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Grant
Cellulose based biodegradable absorptive filter and method of making
Patent number
12,274,964
Issue date
Apr 15, 2025
IMAM MOHAMMAD IBN SAUD ISLAMIC UNIVERSITY
Tarek Ahmed Yousef
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Apparatuses, methods and systems for yield increase in a kraft cook...
Patent number
12,234,602
Issue date
Feb 25, 2025
Bracell Bahia Specialty Cellulose SA
Vinicius de Oliveira Salaroli
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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High solids alkaline oxidation and biomethane conversion of residua...
Patent number
12,234,603
Issue date
Feb 25, 2025
Robert C. Casad
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
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Patent Grant
High brightness non-wood pulp
Patent number
12,227,900
Issue date
Feb 18, 2025
Kimberly-Clark Worldwide, Inc.
Thomas G. Shannon
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Method for separating biomass components by ternary system
Patent number
12,221,747
Issue date
Feb 11, 2025
QILU UNIVERSITY OF TECHNOLOGY
Yongchao Zhang
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Lignin composition
Patent number
12,203,215
Issue date
Jan 21, 2025
Københavns Universitet
Yohanna Cabrera Orozco
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Patent Grant
Hydrothermal-mechanical conversion of lignocellulosic biomass to et...
Patent number
12,195,782
Issue date
Jan 14, 2025
GranBio Intellectual Property Holdings, LLC
Theodora Retsina
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
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Patent Grant
Method for lignin purification
Patent number
12,195,492
Issue date
Jan 14, 2025
Ligneasy Oy
Eric Enqvist
C07 - ORGANIC CHEMISTRY
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Patent Grant
Automatic monitoring of smelt flow exiting a recovery boiler
Patent number
12,195,918
Issue date
Jan 14, 2025
Andritz Oy
Heikki Lappalainen
G01 - MEASURING TESTING
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Patent Grant
Method for removing ammonia from non-condensable gases of a pulp mill
Patent number
12,195,917
Issue date
Jan 14, 2025
VALMET TECHNOLOGIES OY
Naveen Chenna
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Patent Grant
Method for making an adsorptive air filter
Patent number
12,172,112
Issue date
Dec 24, 2024
IMAM MOHAMMAD IBN SAUD ISLAMIC UNIVERSITY
Tarek Ahmed Yousef
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Patent Grant
Lignocellulosic biomass treatment method
Patent number
12,152,110
Issue date
Nov 26, 2024
IFP Energies Nouvelles
Caroline Aymard
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Patent Grant
Non-wood pulp having high brightness and low debris
Patent number
12,146,262
Issue date
Nov 19, 2024
Kimberly-Clark Worldwide, Inc.
Zhiying Yu
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Grant
Reactor discharge
Patent number
12,139,853
Issue date
Nov 12, 2024
Valmet AB
Olof Melander
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
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Patent Grant
Determining the reduction rate of a recovery boiler
Patent number
12,134,859
Issue date
Nov 5, 2024
Andritz Oy
Heikki Lappalainen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Grant
Arylsulfonic acid—modified sulfuric acid and uses thereof
Patent number
12,123,138
Issue date
Oct 22, 2024
SixRing Inc.
Clay Purdy
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Grant
System for generating accurate reference signals for time-of-arriva...
Patent number
12,126,389
Issue date
Oct 22, 2024
ZaiNar, Inc.
Philip Kratz
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
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Patent Application
EFFICIENT METHODS AND COMPOSITIONS FOR RECOVERY OF PRODUCTS FROM OR...
Publication number
20250215642
Publication date
Jul 3, 2025
Pierson Capital Environmental (Beijing) Limited
Feng LING
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Patent Application
DESILICATION AND MANUFACTURE OF LOW CARBON INTENSITY CHEMI-MECHANIC...
Publication number
20250207328
Publication date
Jun 26, 2025
RED LEAF SUSTAINABLE IP CORP.
Douglas MCKENZIE
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
PREDICTIVE AND REAL TIME PROCESS INTERVENTION INVOLVING A MULTI-COM...
Publication number
20250179733
Publication date
Jun 5, 2025
Buckman Laboratories International, Inc.
Glenn Mudaly
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
APPARATUSES, METHODS AND SYSTEMS FOR YIELD INCREASE IN A KRAFT COOK...
Publication number
20250163643
Publication date
May 22, 2025
Bracell Bahia Specialty Cellulose SA
Vinicius de Oliveira Salaroli
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
EFFICIENT METHODS AND COMPOSITIONS FOR RECOVERY OF PRODUCTS FROM OR...
Publication number
20250146217
Publication date
May 8, 2025
Pierson Capital Environmental (Beijing) Limited
Feng LING
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
HIGH BRIGHTNESS NON-WOOD PULP
Publication number
20250146219
Publication date
May 8, 2025
Kimberly-Clark Worldwide, Inc.
Thomas G. Shannon
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
PROCESSES FOR FRACTIONATION OF BIOMASS
Publication number
20250075425
Publication date
Mar 6, 2025
The Board of Trustees of the University of Alabama
James Dennis Pierog-Sheehan
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
CATALYST FREE ORGANOSOLV PROCESS, SYSTEM, AND METHOD FOR FRACTIONAT...
Publication number
20250075427
Publication date
Mar 6, 2025
AMERICAN SCIENCE AND TECHNOLOGY
Ali Manesh
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
NANOCELLULOSE-REINFORCED CORRUGATED MEDIUM
Publication number
20250059709
Publication date
Feb 20, 2025
GRANBIO INTELLECTUAL PROPERTY HOLDINGS, LLC
Theodora RETSINA
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
HYDROPHOBIC NANOCELLULOSE-COATED PAPER AND PAPERBOARD
Publication number
20250059357
Publication date
Feb 20, 2025
GRANBIO INTELLECTUAL PROPERTY HOLDINGS, LLC
Kimberly NELSON
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
HIGHLY REFINED PULP FROM FIBERS OBTAINED FROM USED BEVERAGE CARTONS
Publication number
20250043512
Publication date
Feb 6, 2025
STORA ENSO OYJ
Carl-Henrik Ljungqvist
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
REACTOR DISCHARGE
Publication number
20250034806
Publication date
Jan 30, 2025
VALMET AB
Olof MELANDER
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Application
A GASKET ARRANGEMENT FOR A PROTRUDING BAR OF A BOILER AND A METHOD...
Publication number
20250034808
Publication date
Jan 30, 2025
Jarkko BRUNOU
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
NON-WOOD PULP HAVING HIGH BRIGHTNESS AND LOW DEBRIS
Publication number
20250012010
Publication date
Jan 9, 2025
Kimberly-Clark Worldwide, Inc.
Zhiying Yu
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
NANOCELLULOSE-POLYMER COMPOSITES, AND PROCESSES FOR PRODUCING THEM
Publication number
20250011584
Publication date
Jan 9, 2025
GRANBIO INTELLECTUAL PROPERTY HOLDINGS, LLC
Kimberly NELSON
B82 - NANO-TECHNOLOGY
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Patent Application
RECOVERING A CAUSTIC SOLUTION VIA CALCIUM CARBONATE CRYSTAL AGGREGATES
Publication number
20250002364
Publication date
Jan 2, 2025
Carbon Engineering ULC
Kenton Robert Heidel
C01 - INORGANIC CHEMISTRY
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Patent Application
RECOVERY BOILER STARTUP BURNER ASSEMBLY
Publication number
20240417927
Publication date
Dec 19, 2024
Andritz Inc.
Gregory Alan IMIG
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
PROCESS FOR TREATMENT OF BIOMASS FOR PULPING AND BIOREFINERY APPLIC...
Publication number
20240401270
Publication date
Dec 5, 2024
FUMA LABS PRIVATE LIMITED
Shubham SINGH
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
THERMAL-PRESSURE HYDROLYSIS SUSTAINABLE BIOMASS FOR THE PRODUCTION...
Publication number
20240401269
Publication date
Dec 5, 2024
THERMO PRESSURE TECHNOLOGIES LEMITED
Andrew Walsh
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Application
Method and Apparatus for Improved Operation of Chemical Recovery Bo...
Publication number
20240401800
Publication date
Dec 5, 2024
Sullivan, Higgins, and Brion Power Plant Engineering, LLC
Eugene Sullivan
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
DEFOAMING AGENT AND COMPOSITIONS CONTAINING THE DEFOAMING AGENT
Publication number
20240390820
Publication date
Nov 28, 2024
Solenis Technologies, L.P.
Are Wiberg
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Patent Application
METHODS AND DEVICES FOR PROCESSING LIGNOCELLULOSIC BIOMASS USING ME...
Publication number
20240392500
Publication date
Nov 28, 2024
TAB HOLDING APS
Robert C. Casad
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Application
SYSTEMS AND TECHNIQUES FOR CONTROLLING ODOR EMISSIONS FROM PULP MILLS
Publication number
20240384467
Publication date
Nov 21, 2024
ECOLAB USA INC.
Marcial Jara
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
TREATING BLACK LIQUOR WITH ACIDIC BIOMASS FOR LIGNIN RECOVERY
Publication number
20240383937
Publication date
Nov 21, 2024
SUNCARBON AB
Daniela RUSANOVA-NAYDENOVA
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
METHODS AND SYSTEMS FOR TREATING BIOMASS COMPOSITIONS
Publication number
20240352369
Publication date
Oct 24, 2024
Bruso LLC
Bruce Lee Bruso
C05 - FERTILISERS MANUFACTURE THEREOF
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Patent Application
METHOD FOR PREPARING FLUFF PULP FROM BAMBOOS AND FLUFF PULP PREPARE...
Publication number
20240328083
Publication date
Oct 3, 2024
SOUTH CHINA UNIVERSITY OF TECHNOLOGY
Yichao LEI
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
Sulfonated Lignin-Derived Compounds And Uses Thereof
Publication number
20240318382
Publication date
Sep 26, 2024
CMBLU Energy AG
Nastaran KRAWCZYK
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
SYSTEM FOR GENERATING ACCURATE REFERENCE SIGNALS FOR TIME-OF-ARRIVA...
Publication number
20240322918
Publication date
Sep 26, 2024
ZaiNar, Inc.
Philip Kratz
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Patent Application
METHOD FOR PROCESSING BARK PRESS WATER FROM SAWMILLS AND/OR PULP MILLS
Publication number
20240307825
Publication date
Sep 19, 2024
SÖDRA SKOGSÄGARNA EKONOMISK FÖRENING
Jim PARKÅS
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Patent Application
MODIFIED SULFURIC ACID AND USES THEREOF
Publication number
20240309585
Publication date
Sep 19, 2024
SixRing Inc.
Clay PURDY
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE