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Ake Backlund
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Karlstad, SE
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Patents Grants
last 30 patents
Information
Patent Grant
Totally chlorine free bleaching process using recovered filtrate
Patent number
6,336,994
Issue date
Jan 8, 2002
Kvaerner Pulping Aktiebolag
Åke Backlund
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Digester having screening arrangement for isothermal cooking of fib...
Patent number
6,113,742
Issue date
Sep 5, 2000
Kvaerner Pulping AB
Ake Backlund
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Screen system for a continuous digester
Patent number
5,827,401
Issue date
Oct 27, 1998
Kvaerner Pulping Technologies AB
Ake Backlund
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for isothermal cooking pulp in a continuous digester
Patent number
5,766,413
Issue date
Jun 16, 1998
Kvaerner Pulping AB
Ake Backlund
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for bleaching pulp with hydrogen peroxide recovered from cel...
Patent number
5,628,872
Issue date
May 13, 1997
Kanyr AB
Ake Backlund
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for operating a digester
Patent number
5,591,303
Issue date
Jan 7, 1997
Kvaerner Pulping Technologies AB
Finn Oulie
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Digester for cooking pulp having staggered circular screens for iso...
Patent number
5,567,280
Issue date
Oct 22, 1996
Kvaerner Pulping Aktiebolag
Ake Backlund
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for controlling the flow of cellulosic fiber material throu...
Patent number
5,529,661
Issue date
Jun 25, 1996
Kvaerner Pulping Technologies AB
Ake Backlund
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Digester for cooking pulp having staggered screens
Patent number
5,470,437
Issue date
Nov 28, 1995
Kvaerner Pulping Technologies AB
Finn Oulie
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for bleaching pulp without using chlorine containing chemicals
Patent number
5,415,734
Issue date
May 16, 1995
Kvaerner Pulping Technologies AB
Ake Backlund
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for oxygen bleaching using two vertical reactors
Patent number
5,217,575
Issue date
Jun 8, 1993
Kamyr AB
Ake Backlund
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for the continuous digestion of cellulosic fiber material
Patent number
5,192,396
Issue date
Mar 9, 1993
Kamyr AB
Ake Backlund
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for the continuous digestion of cellulosic fiber material
Patent number
5,080,755
Issue date
Jan 14, 1992
Kamyr AB
Ake Backlund
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method of preparing a plup using a fluidizing centrifugal pump duri...
Patent number
4,968,385
Issue date
Nov 6, 1990
Kamyr AB
Julio Amador
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Treatment of mechanical pulp to remove resin
Patent number
4,922,989
Issue date
May 8, 1990
Kamyr AB
Ake Backlund
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method of removing latency from medium consistency pulps by pumping...
Patent number
4,596,631
Issue date
Jun 24, 1986
Kamyr, Inc.
J. Robert Prough
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for control of chemicals during gas treatment of suspensions
Patent number
4,419,184
Issue date
Dec 6, 1983
Kamyr AB
Ake Backlund
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE