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Purification of the pulp suspension by mechanical means Apparatus therefor
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D21D5/00
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Parent Industries
D
TEXTILES PAPER
D21
Papermaking
D21D
TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
Current Industry
D21D5/00
Purification of the pulp suspension by mechanical means Apparatus therefor
Sub Industries
D21D5/005
Forming fibrous aggregates
D21D5/02
Straining or screening the pulp
D21D5/023
Stationary screen-drums
D21D5/026
with rotating cleaning foils
D21D5/04
Flat screens
D21D5/043
Vibrating screens
D21D5/046
Rotary screens
D21D5/06
Rotary screen-drums
D21D5/08
combined with a rocking movement
D21D5/10
of the tank
D21D5/12
of the screen
D21D5/14
of the tank and the screen
D21D5/16
Cylinders and plates for screens
D21D5/18
with the aid of centrifugal force
D21D5/20
in apparatus with a horizontal axis
D21D5/22
in apparatus with a vertical axis
D21D5/24
in cyclones
D21D5/26
De-aeration of paper stock
D21D5/28
Tanks for storing or agitating pulp
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Patents Grants
last 30 patents
Information
Patent Grant
Arrangement and method for degassing a pump
Patent number
12,173,451
Issue date
Dec 24, 2024
Andritz Oy
Ronny Geiger
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Screen cylinder
Patent number
12,123,141
Issue date
Oct 22, 2024
AIKAWA FIBER TECHNOLOGIES OY
Benoit Martineau
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for producing a nanocelullosic material comprising at least...
Patent number
12,123,143
Issue date
Oct 22, 2024
SUZANO S.A.
Marcos Henrique Luciano Silveira
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Rotor with forward-swept struts for pressure screen cylinders
Patent number
12,070,776
Issue date
Aug 27, 2024
KADANT BLACK CLAWSON, LLC
John Joseph Egan
B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information
Patent Grant
Pulper for circulating a fibrous stock suspension
Patent number
12,012,694
Issue date
Jun 18, 2024
Voith Patent GmbH
Oliver Lüdtke
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Pressure screen and method for dilution for a pressure screen
Patent number
11,926,961
Issue date
Mar 12, 2024
ANDRITZ (China) Ltd.
Alexander Gscheider
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for separating trichomes from non-trichome materials
Patent number
11,879,211
Issue date
Jan 23, 2024
The Procter & Gamble Company
Raul Victorino Nunes
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for predicting or controlling microbial status of a paper or...
Patent number
11,859,347
Issue date
Jan 2, 2024
Kemira Oyj
Marko Kolari
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Inline dilution of microfibrillated cellulose
Patent number
11,851,818
Issue date
Dec 26, 2023
Borregaard AS
Anne Opstad
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Screen cylinder
Patent number
11,846,070
Issue date
Dec 19, 2023
AIKAWA FIBER TECHNOLOGIES OY
Benoit Martineau
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for producing strong and soft tissue and towel products
Patent number
11,834,787
Issue date
Dec 5, 2023
The Procter & Gamble Company
Osman Polat
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method and apparatus for controlling a fiber fractionation system
Patent number
11,834,786
Issue date
Dec 5, 2023
International Paper Company
Jyrki Tapio Jaakkola
B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information
Patent Grant
Pulp transportation system
Patent number
11,828,023
Issue date
Nov 28, 2023
Fu-Lin Hsiao
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Sulfonated lignin-derived compounds and uses thereof
Patent number
11,773,537
Issue date
Oct 3, 2023
CMBlu Energy AG
Nastaran Krawczyk
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Powder collection unit and fiber processing apparatus
Patent number
11,767,637
Issue date
Sep 26, 2023
Seiko Epson Corporation
Akihiro Satake
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Sulfonated lignin-derived compounds and uses thereof
Patent number
11,725,340
Issue date
Aug 15, 2023
CMBlu Energy AG
Nastaran Krawczyk
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method for manufacturing a fibrous web
Patent number
11,598,051
Issue date
Mar 7, 2023
Kemira Oyj
Jaakko Ekman
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Fiber processing device and fiber body manufacturing apparatus
Patent number
11,492,729
Issue date
Nov 8, 2022
Seiko Epson Corporation
Nao Kobayashi
B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information
Patent Grant
Filter segment with a light weight frame
Patent number
11,478,731
Issue date
Oct 25, 2022
VALMET TECHNOLOGIES OY
Karl Gabrielsson
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Fiber processing device, fibrous feedstock recycling device, and co...
Patent number
11,390,992
Issue date
Jul 19, 2022
Seiko Epson Corporation
Yuki Oguchi
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Separation device
Patent number
11,325,160
Issue date
May 10, 2022
Andritz Oy
Kari Peltonen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Aramid nanofiber-based insulation paper and preparation method thereof
Patent number
11,319,675
Issue date
May 3, 2022
Hunan University
Jianfeng Wang
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Screen machine for screening for paper material, casing body for sc...
Patent number
11,286,616
Issue date
Mar 29, 2022
Sung Ju Na
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Hydrocyclone reject chamber
Patent number
11,285,496
Issue date
Mar 29, 2022
VALMET TECHNOLOGIES OY
Bengt Eriksson
B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information
Patent Grant
Fiber assembly-forming method and fiber assembly-forming apparatus
Patent number
11,274,395
Issue date
Mar 15, 2022
Seiko Epson Corporation
Tetsuya Aoyama
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Screen assembly for pulp digesters and other treatment vessels in p...
Patent number
11,255,046
Issue date
Feb 22, 2022
Andritz Oy
Henri Kesseli
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for producing low molecular weight aromatic lignin-derived c...
Patent number
11,225,756
Issue date
Jan 18, 2022
CMBLU PROJEKT AG
Nastaran Krawczyk
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Method of preparing recycled cellulosic fibers to improve paper pro...
Patent number
11,214,925
Issue date
Jan 4, 2022
Pulmac Systems International, Inc.
Robert Joseph White
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Separation device
Patent number
11,203,043
Issue date
Dec 21, 2021
KADANT LAMORT
Stephan Pottier
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Collection device, collection method, and fibrous feedstock recycli...
Patent number
11,198,087
Issue date
Dec 14, 2021
Seiko Epson Corporation
Kentaro Yamada
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Patents Applications
last 30 patents
Information
Patent Application
A method, uses of the same, a pulp composition, and a system
Publication number
20250027270
Publication date
Jan 23, 2025
METSÄ BOARD OYJ
Mikko Nikamaa
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
A METHOD FOR MANUFACTURING A PURIFIED FIBER FRACTION FROM USED BEVE...
Publication number
20250012011
Publication date
Jan 9, 2025
STORA ENSO OYJ
Carl-Henrik Ljungqvist
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
A Method for Treating Textile Fibers of Different Lengths
Publication number
20240410111
Publication date
Dec 12, 2024
VALMET TECHNOLOGIES OY
Tuomo Aho
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD AND APPARATUS FOR PRODUCING A MOULDABLE CELLULOSIC FIBROUS M...
Publication number
20240392502
Publication date
Nov 28, 2024
Papyrus Australia Limited
Ramy Abraham AZER
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
ROTOR WITH FORWARD-SWEPT STRUTS FOR PRESSURE SCREEN CYLINDERS
Publication number
20240359215
Publication date
Oct 31, 2024
Kadant Black Clawson LLC
John Joseph Egan
B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information
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
METHODS FOR PRODUCING PULP AND PAPER PRODUCTS FROM PLANTS HAVING BA...
Publication number
20240295074
Publication date
Sep 5, 2024
GOLDCUP 33965 AB (UNC. HEJMAS AGRIFIBRE TECHNOLOGIES AB)
Marek HEJDUK
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
AN ACCEPT TANK MIXING ARRANGEMENT
Publication number
20240229352
Publication date
Jul 11, 2024
ANDRITZ OY
Kimmo VANHALA
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Process for Separating Trichomes from Non-Trichome Materials
Publication number
20240110333
Publication date
Apr 4, 2024
The Procter & Gamble Company
Raul Victorino Nunes
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Filter Sector for a Filter Disc and Disc Filter With a Filter Sector
Publication number
20240091684
Publication date
Mar 21, 2024
Andritz AG
Markus Egger
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
PROCESS FOR PRODUCING STRONG AND SOFT TISSUE AND TOWEL PRODUCTS
Publication number
20240060237
Publication date
Feb 22, 2024
The Procter & Gamble Company
Osman POLAT
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
SCREEN CYLINDER
Publication number
20240044077
Publication date
Feb 8, 2024
AIKAWA FIBER TECHNOLOGIES OY
Benoit MARTINEAU
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD FOR SEPARATING CELLULOSIC PARTICULATES OUT OF FIBER SUSPENSI...
Publication number
20240026606
Publication date
Jan 25, 2024
PAPIERHOLZ AUSTRIA GMBH
Johannes LEITNER
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
REFINER FILLING PIECE HAVING VARIABLY COATED BARS
Publication number
20230407563
Publication date
Dec 21, 2023
AIKAWA FIBER TECHNOLOGIES INC.
Jens O. Heymer
B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information
Patent Application
SLURRY CLEANER SYSTEMS WITH CLEANER DILUTION DEVICES AND METHODS OF...
Publication number
20230357989
Publication date
Nov 9, 2023
Kadant Black Clawson LLC
John J. Egan
B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information
Patent Application
ROTOR WITH FORWARD-SWEPT STRUTS FOR PRESSURE SCREEN CYLINDERS
Publication number
20230338990
Publication date
Oct 26, 2023
Kadant Black Clawson LLC
John Joseph Egan
B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information
Patent Application
PULP TRANSPORTATION SYSTEM
Publication number
20230148434
Publication date
May 11, 2023
Fu-Lin HSIAO
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Method and System for Producing Recycled Fibers for MDF or HDF Prod...
Publication number
20230118469
Publication date
Apr 20, 2023
VALMET TECHNOLOGIES OY
Robert Mohr
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
PROCESSING OF LIGNOCELLULOSIC BIOMASS
Publication number
20230105345
Publication date
Apr 6, 2023
NOVA PANGAEA TECHNOLOGIES (UK) LIMITED
Martin Spangsberg HOLM
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
System and method of producing micro fibrillated cellulose (MFC)
Publication number
20230071986
Publication date
Mar 9, 2023
VALMET TECHNOLOGIES OY
Tuomo AHO
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Pulp Screening Machine
Publication number
20230060771
Publication date
Mar 2, 2023
ANDRITZ (China) Ltd.
Alexander Gscheider
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Screen Plate and Pulp Screening Machine
Publication number
20230060403
Publication date
Mar 2, 2023
ANDRITZ (China) Ltd.
Alexander Gscheider
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
HYDRO-CYCLONE SYSTEM
Publication number
20230037357
Publication date
Feb 9, 2023
VOITH PATENT GmbH
Axel Erzler
B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information
Patent Application
PROCESS FOR MANUFACTURING A FIBRE WEB
Publication number
20230031382
Publication date
Feb 2, 2023
Kemira Oyj
Marko KOLARI
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Process for Separating Trichomes from Non-Trichome Materials
Publication number
20220403595
Publication date
Dec 22, 2022
The Procter & Gamble Company
Raul Victorino Nunes
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
Pressure Screen and Method for Dilution for a Pressure Screen
Publication number
20220349124
Publication date
Nov 3, 2022
ANDRITZ (China) Ltd.
Alexander Gscheider
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD FOR RECOVERING FIBER FROM SCREENING REJECT AND FINE SORTING...
Publication number
20220243394
Publication date
Aug 4, 2022
TAIZEN CO., LTD.
Takefumi IDE
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
POWDER COLLECTION UNIT AND FIBER PROCESSING APPARATUS
Publication number
20220205180
Publication date
Jun 30, 2022
SEIKO EPSON CORPORATION
Akihiro SATAKE
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
SCREEN CYLINDER WITH IMPROVED SLOT WIDTH PROTECTION AND METHOD OF R...
Publication number
20220186438
Publication date
Jun 16, 2022
KADANT BLACK CLAWSON, LLC
Daniel PARENTEAU
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Application
METHOD FOR MANUFACTURING COMPACT
Publication number
20220098797
Publication date
Mar 31, 2022
SEIKO EPSON CORPORATION
Hideki TANAKA
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE