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D21C3/24
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D
TEXTILES PAPER
D21
Papermaking
D21C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS APPARATUS THEREFOR
D21C3/00
Pulping cellulose-containing materials
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D21C3/24
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Patents Grants
last 30 patents
Information
Patent Grant
Predictive control system and method for brown washing treatment in...
Patent number
12,077,911
Issue date
Sep 3, 2024
Buckman Laboratories International, Inc.
Mark D. Schroen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method of feeding wood chips to a prehydrolysis reactor
Patent number
11,993,895
Issue date
May 28, 2024
Andritz Oy
Marco Andrade
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method of transforming high consistency pulp fibers into pre-disper...
Patent number
11,834,785
Issue date
Dec 5, 2023
Fpinnovations
Makhlouf Laleg
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method of producing chemical pulp
Patent number
11,473,241
Issue date
Oct 18, 2022
Andritz Oy
Janne Vehmaa
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Outlet system for transporting comminuted lignocellulosic material...
Patent number
11,371,185
Issue date
Jun 28, 2022
Valmet AB
Roger Jansson
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Grant
Method and a system for production of high molecular weight lignin
Patent number
11,186,948
Issue date
Nov 30, 2021
FIBRATECH PTE. LTD
Matti Kurki
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Pulp-digester screen cleaner
Patent number
11,001,967
Issue date
May 11, 2021
Farnsworth Coleman
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for generation of clean steam in a continous digester system
Patent number
10,815,617
Issue date
Oct 27, 2020
Valmet AB
Krister Olsson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Heating of hydraulic digesters
Patent number
10,240,287
Issue date
Mar 26, 2019
Andritz Oy
Auvo Kettunen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Softwood kraft fiber having an improved α-cellulose content and its...
Patent number
10,151,064
Issue date
Dec 11, 2018
GP Cellulose GmbH
Arthur J. Nonni
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Cost efficient kraft cooking method using polysulfide cooking liquor
Patent number
10,151,063
Issue date
Dec 11, 2018
Valmet AB
Stefan Antonsson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for continuously cooking grass raw materials and device
Patent number
10,053,816
Issue date
Aug 21, 2018
SHANDONG TRALIN PAPER CO., LTD.
Hongfa Li
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method of digesting lignocellulosic material
Patent number
9,803,317
Issue date
Oct 31, 2017
BASF SE
David Durocher
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Continuous process for production of cellulose pulp from grass-like...
Patent number
9,777,429
Issue date
Oct 3, 2017
Marinko Mikulic
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Kraft cooking method using polysulfide cooking liquor
Patent number
9,580,864
Issue date
Feb 28, 2017
Valmet AB
Mikael Lindstrom
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method and apparatus to produce pulp using pre-hydrolysis and Kraft...
Patent number
9,371,612
Issue date
Jun 21, 2016
Andritz Inc.
Aaron Leavitt
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Digester shell extension
Patent number
9,328,458
Issue date
May 3, 2016
Valmet AB
Jonas Saetheråsen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Two vessel reactor system and method for hydrolysis and digestion o...
Patent number
9,194,080
Issue date
Nov 24, 2015
Andritz Inc.
Namhee Shin
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Cooking process of lignocellulose material
Patent number
9,145,642
Issue date
Sep 29, 2015
Nippon Paper Industries Co., Ltd.
Kazuhiro Kurosu
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Feeding system having pumps in parallel for a continuous digester
Patent number
8,888,954
Issue date
Nov 18, 2014
Valmet AB
Anders Samuelsson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Feeding system comprising pumps in parallel for a continuous digester
Patent number
8,888,959
Issue date
Nov 18, 2014
Valmet AB
Anders Samuelsson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method and arrangement for adding treatment liquors to cellulose ma...
Patent number
8,852,395
Issue date
Oct 7, 2014
Valmet AB
Daniel Trolin
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method and system for impregnating chips
Patent number
8,795,468
Issue date
Aug 5, 2014
Valmet AB
Jonas Saetherasen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for an energy efficient production of cellulose pulp in a co...
Patent number
8,691,049
Issue date
Apr 8, 2014
Valmet AB
Vidar Snekkenes
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Unobstructed low pressure outlet and screen grid for a high pressur...
Patent number
8,672,588
Issue date
Mar 18, 2014
Andritz Inc.
Keith Vogel
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Continuous digester with a bottom scraper equipped with draining ap...
Patent number
8,647,473
Issue date
Feb 11, 2014
Metso Paper Sweden AB
Krister Olsson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method to use heat energy from black liquor
Patent number
8,545,674
Issue date
Oct 1, 2013
Metso Paper Sweden AB
Vidar Snekkenes
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Continuous digestion of chip blends containing a western red cedar...
Patent number
8,524,037
Issue date
Sep 3, 2013
Canfor Pulp and Paper Sales Ltd.
Ranbir Heer
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for preventing clogging in a strainer construction for a con...
Patent number
8,449,717
Issue date
May 28, 2013
Metso Paper Sweden AB
Jonas Saetherasen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method and system for direct contact of hot liquor with wood chips...
Patent number
8,444,809
Issue date
May 21, 2013
Andritz Inc.
Anthony Calandra
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Patents Applications
last 30 patents
Information
Patent Application
METHOD OF PRODUCING HOLOCELLULOSE AND PAPER STRENGTH AGENT, PROCESS...
Publication number
20220018065
Publication date
Jan 20, 2022
RISE INNVENTIA AB
Paul KROCHAK
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD OF FEEDING WOOD CHIPS TO A PREHYDROLYSIS REACTOR
Publication number
20220002944
Publication date
Jan 6, 2022
ANDRITZ OY
Marco ANDRADE
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
OUTLET SYSTEM FOR TRANSPORTING COMMINUTED LIGNOCELLULOSIC MATERIAL...
Publication number
20210309449
Publication date
Oct 7, 2021
VALMET AB
Roger JANSSON
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD OF TRANSFORMING HIGH CONSISTENCY PULP FIBERS INTO PRE-DISPER...
Publication number
20210285156
Publication date
Sep 16, 2021
FPINNOVATIONS
Makhlouf LALEG
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
PREDICTIVE CONTROL SYSTEM AND METHOD FOR BROWN WASHING TREATMENT IN...
Publication number
20210148047
Publication date
May 20, 2021
Buckman Laboratories International, Inc.
Mark D. Schroen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD OF PRODUCING CHEMICAL PULP
Publication number
20200181838
Publication date
Jun 11, 2020
ANDRITZ OY
Janne VEHMAA
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Use of Cellulase to improve Viscosity Control of Dissolving Pulp
Publication number
20190257031
Publication date
Aug 22, 2019
NOVOZYMES A/S
Pedro Emanuel Garcia-Loureiro
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD FOR GENERATION OF CLEAN STEAM IN A CONTINOUS DIGESTER SYSTEM
Publication number
20190218712
Publication date
Jul 18, 2019
VALMET AB
Krister OLSSON
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
DOUBLE ALKALI CHARGING FOR CHIP IMPREGNATION
Publication number
20190194867
Publication date
Jun 27, 2019
VALMET AB
Fredrik WILGOTSON
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
COST EFFICIENT KRAFT COOKING METHOD USING POLYSULFIDE COOKING LIQUOR
Publication number
20170275818
Publication date
Sep 28, 2017
VALMET AB
Stefan Antonsson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Method for Continuously Cooking Grass Raw Materials and Device
Publication number
20170268168
Publication date
Sep 21, 2017
SHANDONG TRALIN PAPER CO., LTD.
Hongfa Li
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
HEATING OF HYDRAULIC DIGESTERS
Publication number
20170260693
Publication date
Sep 14, 2017
ANDRITZ OY
Auvo KETTUNEN
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD AND APPARATUS FOR PUMPING SAWDUST FEED IN A SAWDUST PULPING...
Publication number
20170175328
Publication date
Jun 22, 2017
ANDRITZ INC.
Tyson Bradford HUNT
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
A CONTINUOUS PROCESS FOR PRODUCTION OF CELLULOSE PULP FROM GRASS-LI...
Publication number
20170107665
Publication date
Apr 20, 2017
Marinko Mikulic
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
KRAFT COOKING METHOD USING POLYSULFIDE COOKING LIQUOR
Publication number
20170022663
Publication date
Jan 26, 2017
VALMET AB
Mikael Lindstrom
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD OF DIGESTING CELLULOSE FIBROUS MATERIAL IN A CONTINUOUS DIGE...
Publication number
20170022664
Publication date
Jan 26, 2017
STORA ENSO OYJ
Mats NÄSMAN
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Softwood Kraft Fiber Having an Improved A-Cellulose Content and its...
Publication number
20160002849
Publication date
Jan 7, 2016
GP Cellulose GMbH
Arthur J. NONNI
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
TWO VESSEL REACTOR SYSTEM AND METHOD FOR HYDROLYSIS AND DIGESTION O...
Publication number
20140246158
Publication date
Sep 4, 2014
ANDRITZ INC.
Namhee Shin
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
FEEDING SYSTEM HAVING PUMPS IN PARALLEL FOR A CONTINUOUS DIGESTER
Publication number
20140224441
Publication date
Aug 14, 2014
Metso Paper Sweden AB
Anders Samuelsson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
FEEDING SYSTEM COMPRISING PUMPS IN PARALLEL FOR A CONTINUOUS DIGESTER
Publication number
20140138039
Publication date
May 22, 2014
Metso Paper Sweden AB
Anders Samuelsson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD AND ARRANGEMENT FOR TREATING CHEMICAL PULP
Publication number
20140102648
Publication date
Apr 17, 2014
ANDRITZ OY
Janne Vehmaa
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD AND ARRANGEMENT FOR ADDING TREATMENT LIQUORS TO CELLULOSE MA...
Publication number
20140069598
Publication date
Mar 13, 2014
Daniel Trolin
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
CONTINUOUS DIGESTER WITH A BOTTOM SCRAPER EQUIPPED WITH DRAINING AP...
Publication number
20130319628
Publication date
Dec 5, 2013
Krister Olsson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD AND SYSTEM FOR IMPREGNATING CHIPS
Publication number
20130105098
Publication date
May 2, 2013
Jonas Saetherasen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD AND ARRANGEMENT FOR IMPROVING A WASHING STEP AFTER COMPLETED...
Publication number
20120241112
Publication date
Sep 27, 2012
Jonas Saetherasen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD AND APPARATUS TO PRODUCE PULP USING PRE-HYDROLYSIS AND KRAFT...
Publication number
20120211183
Publication date
Aug 23, 2012
ANDRITZ INC.
Aaron LEAVITT
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
COOKING PROCESS OF LIGNOCELLULOSE MATERIAL
Publication number
20120067533
Publication date
Mar 22, 2012
Kazuhiro Kurosu
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
FEEDING SYSTEM COMPRISING PARALLEL PUMPS FOR A CONTINUOUS DIGESTER
Publication number
20110259539
Publication date
Oct 27, 2011
Anders Samuelsson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD FOR PREVENTING CLOGGING IN A STRAINER CONSTRUCTION FOR A CON...
Publication number
20110203755
Publication date
Aug 25, 2011
Jonas Saetherasen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Continuous Digestion of Chip Blends Containing a Western Red Cedar...
Publication number
20110186250
Publication date
Aug 4, 2011
Ranbir Heer
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE