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CPC
D21F1/68
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Parent Industries
D
TEXTILES PAPER
D21
Papermaking
D21F
PAPER-MAKING MACHINES METHODS OF PRODUCING PAPER THEREON
D21F1/00
Wet end of machines for making continuous webs of paper
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D21F1/68
using hydrocyclones
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Patents Grants
last 30 patents
Information
Patent Grant
System for managing solids in papermaking whitewater
Patent number
12,043,961
Issue date
Jul 23, 2024
Joseph P. McDonald
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Pulp fractionation using centrifugal cleaners and power screens wit...
Patent number
7,381,295
Issue date
Jun 3, 2008
Metso Paper, Inc.
Kari Kokkonen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for recovering raw materials from paper industry mechanical...
Patent number
6,207,015
Issue date
Mar 27, 2001
Stora Feldmuhle AG
Klaus Templer
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Clarifying suspended solids from liquid process streams
Patent number
5,458,738
Issue date
Oct 17, 1995
Kamyr, Inc.
J. Wayne Chamblee
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Hydrocyclone removal of sticky contaminants during paper recycling
Patent number
5,131,980
Issue date
Jul 21, 1992
Kamyr, Inc.
Wayne J. Chamblee
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Hydrocyclone deinking of paper during recycling
Patent number
5,069,751
Issue date
Dec 3, 1991
Kamyr, Inc.
Wayne J. Chamblee
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Downflow control system for web making machines
Patent number
3,960,653
Issue date
Jun 1, 1976
Dominion Engineering Works, Limited
Ralph James Futcher
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Patents Applications
last 30 patents
Information
Patent Application
Method and Equipment for pulp fractionation in a paper or board mac...
Publication number
20040026050
Publication date
Feb 12, 2004
Kari Kokkonen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE