Doctor knifes

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D21G3/005

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DTEXTILES PAPER D21Papermaking D21GCALENDERS ACCESSORIES FOR PAPER-MAKING MACHINES D21G3/00Doctors

Current Industry

D21G3/005Doctor knifes

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Patents Grantslast 30 patents

Information Patent Grant
Creped fibrous structures
- Patent number 12,359,376
- Issue date Jul 15, 2025
- The Procter & Gamble Company
- Fei Wang
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Bracket for a pivot rod in a doctor arrangement and doctor arrangem...
- Patent number 12,312,744
- Issue date May 27, 2025
- VALMET TECHNOLOGIES OY
- David Bouthillette
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Monitoring apparatus and monitoring method
- Patent number 12,180,655
- Issue date Dec 31, 2024
- VALMET AUTOMATION OY
- Kimmo Mehtomaa
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Creping blade for tissue making
- Patent number 12,145,342
- Issue date Nov 19, 2024
- Irving Consumer Products Limited
- Samuel Mitton
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Doctor device and method for determining the contact pressure of a...
- Patent number 12,146,266
- Issue date Nov 19, 2024
- Voith Patent GmbH
- Hubert Bischof
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Blade and creping arrangement
- Patent number 12,128,647
- Issue date Oct 29, 2024
- Voith Patent GmbH
- Alexandre Claudon
- B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
Information Patent Grant
Fibrous structures
- Patent number 11,970,818
- Issue date Apr 30, 2024
- The Procter & Gamble Company
- Fei Wang
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Fibrous structures
- Patent number 11,879,215
- Issue date Jan 23, 2024
- The Procter & Gamble Company
- Fei Wang
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Die coating on air supported shell
- Patent number 11,865,571
- Issue date Jan 9, 2024
- 3M Innovative Properties Company
- Tyler J. Rattray
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Grant
Systems and methods for providing doctor blade holders with vibrati...
- Patent number 11,834,790
- Issue date Dec 5, 2023
- Kadant Inc.
- Robert P. Johnson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Elongated component for a manufacturing machine of a fibrous cellul...
- Patent number 11,814,793
- Issue date Nov 14, 2023
- VALMET TECHNOLOGIES OY
- Pasi Viitasalo
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Doctor blade, inking arrangement and use of doctor blade in flexogr...
- Patent number 11,718,088
- Issue date Aug 8, 2023
- BTG Eclepens S.A.
- Alexandre Claudon
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Blowing equipment for doctor equipment of a fiber web machine and f...
- Patent number 11,643,780
- Issue date May 9, 2023
- Valmet Technologies, Inc.
- Hannu Eerikäinen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Creped fibrous structures
- Patent number 11,486,097
- Issue date Nov 1, 2022
- The Procter & Gamble Company
- Fei Wang
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Masked coating blade
- Patent number 11,466,407
- Issue date Oct 11, 2022
- BTG Eclepens S.A.
- Alexandre Claudon
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Grant
Wear composites including one or more metal layers
- Patent number 11,459,701
- Issue date Oct 4, 2022
- Kadant Inc.
- Michael Draper
- B08 - CLEANING
Information Patent Grant
Fibrous structures
- Patent number 11,198,972
- Issue date Dec 14, 2021
- The Procter & Gamble Company
- Fei Wang
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Fibrous structures
- Patent number 11,162,224
- Issue date Nov 2, 2021
- The Procter & Gamble Company
- Fei Wang
- B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
Information Patent Grant
Doctor blade device
- Patent number 11,072,142
- Issue date Jul 27, 2021
- CS PRODUKTION AB
- Tore Eriksson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Deposit detection in a paper making system via vibration analysis
- Patent number 11,041,271
- Issue date Jun 22, 2021
- Ecolab USA Inc.
- Dominic Luneau
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Methods of making paper products using a molding roll
- Patent number 11,035,077
- Issue date Jun 15, 2021
- GPCP IP Holdings LLC
- David A. Beck
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Sheet characterization of crepe paper
- Patent number 11,015,293
- Issue date May 25, 2021
- Solenis Technologies, L.P.
- Timothy Patterson
- B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
Information Patent Grant
Doctor blade holder for cylinders, and system comprising a cylinder...
- Patent number 10,883,225
- Issue date Jan 5, 2021
- ORADOC S.R.L.
- Roberto Gaspari
- B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
Information Patent Grant
Conditioning doctor blade for fiber web machine
- Patent number 10,821,679
- Issue date Nov 3, 2020
- Valmet Technologies, Inc.
- Håkan Hulden
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Creped fibrous structures
- Patent number 10,745,865
- Issue date Aug 18, 2020
- The Procter & Gamble Company
- Fei Wang
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Differential pillow height fibrous structures
- Patent number 10,745,864
- Issue date Aug 18, 2020
- The Procter & Gamble Company
- Fei Wang
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Rigid and flexible doctor blade holder and system comprising a cyli...
- Patent number 10,633,795
- Issue date Apr 28, 2020
- ORADOC S.R.L.
- Roberto Gaspari
- B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
Information Patent Grant
Doctor blade handling system
- Patent number 10,569,293
- Issue date Feb 25, 2020
- IPCO Sweden AB
- Raffaele Pozzi
- B08 - CLEANING
Information Patent Grant
Doctor blade device
- Patent number 10,569,491
- Issue date Feb 25, 2020
- CS PRODUKTION AB
- Tore Eriksson
- B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
Information Patent Grant
Fibrous structures
- Patent number 10,538,881
- Issue date Jan 21, 2020
- The Procter & Gamble Company
- Fei Wang
- B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD

Patents Applicationslast 30 patents

Information Patent Application
CREPING BLADE FOR TISSUE MAKING
- Publication number 20250033314
- Publication date Jan 30, 2025
- Irving Consumer Products Limited
- Samuel Mitton
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
BLADE AND CREPING ARRANGEMENT
- Publication number 20240262071
- Publication date Aug 8, 2024
- VOITH PATENT GmbH
- Alexandre Claudon
- B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
Information Patent Application
Fibrous Structures
- Publication number 20240229357
- Publication date Jul 11, 2024
- The Procter & Gamble Company
- Fei Wang
- B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
Information Patent Application
Set for Maintenance of a Doctor Blade in a Fiber Web Machine and Do...
- Publication number 20240191432
- Publication date Jun 13, 2024
- VALMET TECHNOLOGIES, INC.
- Hannu Eerikäinen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Stud for a Doctor Blade Holder in a Fiber Web Machine and Doctor Bl...
- Publication number 20240102244
- Publication date Mar 28, 2024
- VALMET TECHNOLOGIES, INC.
- Stephane Lecuyer
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
BRACKET FOR A PIVOT ROD IN A DOCTOR ARRANGEMENT AND DOCTOR ARRANGEM...
- Publication number 20240084510
- Publication date Mar 14, 2024
- VALMET TECHNOLOGIES OY
- David BOUTHILLETTE
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
A YANKEE DRYING CYLINDER AND A TISSUE PAPER MAKING MACHINE
- Publication number 20240011222
- Publication date Jan 11, 2024
- Valmet Aktiebolag
- Ola Jonsson
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD AND APPARATUS FOR ANOMALY DETECTION ON A DOCTOR BLADE OF A P...
- Publication number 20230203753
- Publication date Jun 29, 2023
- Aktiebolaget SKF
- Kaihuan ZHANG
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
METHOD AND APPARATUS FOR EVALUATING A HEALTH STATUS OF A DOCTOR BLA...
- Publication number 20230203754
- Publication date Jun 29, 2023
- Aktiebolaget SKF
- Kaihuan ZHANG
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
BIO-COMPOSITE SUSTAINABLE DOCTOR BLADE
- Publication number 20230151546
- Publication date May 18, 2023
- KADANT INC.
- Dr. Michael Draper
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Elongated Component for a Manufacturing Machine of a Fibrous Cellul...
- Publication number 20220403596
- Publication date Dec 22, 2022
- VALMET TECHNOLOGIES OY
- Pasi Viitasalo
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
CREPING BLADE FOR TISSUE MAKING
- Publication number 20220379577
- Publication date Dec 1, 2022
- Irving Consumer Products Limited
- Samuel Mitton
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Application
SCRAPER DEVICE AND METHOD FOR DETERMINING THE CONTACT PRESSURE OF A...
- Publication number 20220356647
- Publication date Nov 10, 2022
- VOITH PATENT GmbH
- Hubert Bischof
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
SYSTEMS AND METHODS FOR PROVIDING DOCTOR BLADE HOLDERS WITH VIBRATI...
- Publication number 20220243398
- Publication date Aug 4, 2022
- KADANT INC.
- Robert P. JOHNSON
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Blowing Equipment for Doctor Equipment of a Fiber Web Machine and F...
- Publication number 20220098795
- Publication date Mar 31, 2022
- VALMET TECHNOLOGIES, INC.
- Hannu Eerikäinen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
FIBROUS STRUCTURES
- Publication number 20220064866
- Publication date Mar 3, 2022
- The Procter & Gamble Company
- Fei Wang
- B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
Information Patent Application
DOCTOR BLADE WITH POLYMERIC RETENTION MEANS, DOCTOR BLADE HOLDER CO...
- Publication number 20210316329
- Publication date Oct 14, 2021
- KADANT INC.
- Michael DRAPER
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Application
MONITORING APPARATUS AND MONITORING METHOD
- Publication number 20210301466
- Publication date Sep 30, 2021
- VALMET AUTOMATION OY
- Kimmo MEHTOMAA
- G01 - MEASURING TESTING
Information Patent Application
DOCTOR BLADE DEVICE
- Publication number 20200147919
- Publication date May 14, 2020
- CS PRODUKTION AB
- Tore ERIKSSON
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
SHEET CHARACTERIZATION OF CREPE PAPER
- Publication number 20200048837
- Publication date Feb 13, 2020
- Solenis Technologies, L.P.
- Timothy Patterson
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
HINGE/TAPER CLAMP ROD HOLDER INSERT
- Publication number 20190360156
- Publication date Nov 28, 2019
- BUSCHMAN CORPORATION
- Westlake David Buschman
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Application
WEAR COMPOSITES INCLUDING ONE OR MORE METAL LAYERS
- Publication number 20190301098
- Publication date Oct 3, 2019
- KADANT INC.
- Michael DRAPER
- B08 - CLEANING
Information Patent Application
DEPOSIT DETECTION IN A PAPER MAKING SYSTEM VIA VIBRATION ANALYSIS
- Publication number 20190120811
- Publication date Apr 25, 2019
- ECOLAB USA INC.
- Dominic Luneau
- G01 - MEASURING TESTING
Information Patent Application
METHODS OF MAKING PAPER PRODUCTS USING A MOLDING ROLL
- Publication number 20190062997
- Publication date Feb 28, 2019
- GPCP IP Holdings LLC
- David A. Beck
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Conditioning Doctor Blade for Fiber Web Machine
- Publication number 20190001585
- Publication date Jan 3, 2019
- VALMET TECHNOLOGIES, INC.
- Håkan Hulden
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Fibrous Structures
- Publication number 20180112358
- Publication date Apr 26, 2018
- The Procter & Gamble Company
- Fei Wang
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Fibrous Structures
- Publication number 20180112357
- Publication date Apr 26, 2018
- The Procter & Gamble Company
- Fei Wang
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
HINGE/TAPER CLAMP ROD HOLDER INSERT
- Publication number 20180105989
- Publication date Apr 19, 2018
- BUSCHMAN CORPORATION
- Westlake David Buschman
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Application
DOCTOR CONTROL SYSTEMS FOR PAPERMAKING MACHINES AND RELATED METHODS
- Publication number 20180100271
- Publication date Apr 12, 2018
- GPCP IP Holdings LLC
- Mitchell S. Edbauer
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
DOCTOR BLADE DEVICE
- Publication number 20180022055
- Publication date Jan 25, 2018
- CS PRODUKTION AB
- Tore ERIKSSON
- B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD

Doctor knifes

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Creped fibrous structures

Bracket for a pivot rod in a doctor arrangement and doctor arrangem...

Monitoring apparatus and monitoring method

Creping blade for tissue making

Doctor device and method for determining the contact pressure of a...

Blade and creping arrangement

Fibrous structures

Fibrous structures

Die coating on air supported shell

Systems and methods for providing doctor blade holders with vibrati...

Elongated component for a manufacturing machine of a fibrous cellul...

Doctor blade, inking arrangement and use of doctor blade in flexogr...

Blowing equipment for doctor equipment of a fiber web machine and f...

Creped fibrous structures

Masked coating blade

Wear composites including one or more metal layers

Fibrous structures

Fibrous structures

Doctor blade device

Deposit detection in a paper making system via vibration analysis

Methods of making paper products using a molding roll

Sheet characterization of crepe paper

Doctor blade holder for cylinders, and system comprising a cylinder...

Conditioning doctor blade for fiber web machine

Creped fibrous structures

Differential pillow height fibrous structures

Rigid and flexible doctor blade holder and system comprising a cyli...

Doctor blade handling system

Doctor blade device

Fibrous structures

Patents Applicationslast 30 patents

CREPING BLADE FOR TISSUE MAKING

BLADE AND CREPING ARRANGEMENT

Fibrous Structures

Set for Maintenance of a Doctor Blade in a Fiber Web Machine and Do...

Stud for a Doctor Blade Holder in a Fiber Web Machine and Doctor Bl...

BRACKET FOR A PIVOT ROD IN A DOCTOR ARRANGEMENT AND DOCTOR ARRANGEM...

A YANKEE DRYING CYLINDER AND A TISSUE PAPER MAKING MACHINE

METHOD AND APPARATUS FOR ANOMALY DETECTION ON A DOCTOR BLADE OF A P...

METHOD AND APPARATUS FOR EVALUATING A HEALTH STATUS OF A DOCTOR BLA...

BIO-COMPOSITE SUSTAINABLE DOCTOR BLADE

Elongated Component for a Manufacturing Machine of a Fibrous Cellul...

CREPING BLADE FOR TISSUE MAKING

SCRAPER DEVICE AND METHOD FOR DETERMINING THE CONTACT PRESSURE OF A...

SYSTEMS AND METHODS FOR PROVIDING DOCTOR BLADE HOLDERS WITH VIBRATI...

Blowing Equipment for Doctor Equipment of a Fiber Web Machine and F...

FIBROUS STRUCTURES

DOCTOR BLADE WITH POLYMERIC RETENTION MEANS, DOCTOR BLADE HOLDER CO...

MONITORING APPARATUS AND MONITORING METHOD

DOCTOR BLADE DEVICE

SHEET CHARACTERIZATION OF CREPE PAPER

HINGE/TAPER CLAMP ROD HOLDER INSERT

WEAR COMPOSITES INCLUDING ONE OR MORE METAL LAYERS

DEPOSIT DETECTION IN A PAPER MAKING SYSTEM VIA VIBRATION ANALYSIS

METHODS OF MAKING PAPER PRODUCTS USING A MOLDING ROLL

Conditioning Doctor Blade for Fiber Web Machine

Fibrous Structures

Fibrous Structures

HINGE/TAPER CLAMP ROD HOLDER INSERT

DOCTOR CONTROL SYSTEMS FOR PAPERMAKING MACHINES AND RELATED METHODS

DOCTOR BLADE DEVICE