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Johan Landfors
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Sundsvall, SE
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last 30 patents
Information
Patent Grant
Method of producing chlorine dioxide
Patent number
6,576,213
Issue date
Jun 10, 2003
EKA Chemicals, Inc.
Helena Falgén
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Leaching process
Patent number
5,961,803
Issue date
Oct 5, 1999
Eka Chemicals AB
Johan Landfors
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Purifying aqueous effluent from a pulp mill using electro chemical...
Patent number
5,792,315
Issue date
Aug 11, 1998
Eka Chemicals AB
Johan Landfors
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Electrochemical process
Patent number
5,653,861
Issue date
Aug 5, 1997
Eka Nobel AB
Johan Landfors
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Production of polysulphide by electrolysis of white liquor containi...
Patent number
5,624,545
Issue date
Apr 29, 1997
EKA Nobel Inc.
Johan Landfors
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for purification and recycle of solutions
Patent number
5,547,542
Issue date
Aug 20, 1996
Eka Nobel AB
Johan Landfors
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process of producing chlorine dioxide
Patent number
5,523,072
Issue date
Jun 4, 1996
EKA Nobel Inc.
Helena Falgen
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process of producing chlorine dioxide
Patent number
5,487,881
Issue date
Jan 30, 1996
EKA Nobel Inc.
Helena Falgen
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Electrochemical process
Patent number
5,478,446
Issue date
Dec 26, 1995
EKA Nobel Inc.
Helena Falgen
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Method for purifying process water from pulp manufacture
Patent number
5,437,791
Issue date
Aug 1, 1995
Eka Nobel AB
Gunnar Goransson
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Process for production of acidified process streams
Patent number
5,407,547
Issue date
Apr 18, 1995
Eka Nobel AB
Johan Landfors
C01 - INORGANIC CHEMISTRY