Bjorn H. Fritzvold

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Oslo, NO

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Patents Grantslast 30 patents

Information Patent Grant
Method for bleaching oxygen delignified cellulose-containing pulp w...
- Patent number 4,450,044
- Issue date May 22, 1984
- Myrens Verksted A/S
- Bjorn H. Fritzvold
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for treating refined mechanical pulp and thermo mechanical p...
- Patent number 4,279,694
- Issue date Jul 21, 1981
- Myrens Verksted A/S
- Bjorn H. Fritzvold
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for bleaching pulp with ozone
- Patent number 4,278,496
- Issue date Jul 14, 1981
- Myrens Verksted A/S
- Bjorn H. Fritzvold
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Disc press for continuous pressing of aqueous or suspended pulp
- Patent number 4,139,467
- Issue date Feb 13, 1979
- Myrens Verksted A/S
- Bjorn H. Fritzvold
- B30 - PRESSES
Information Patent Grant
Method and an apparatus for processing finely divided fibrous pulp...
- Patent number 4,123,317
- Issue date Oct 31, 1978
- Myrens Verksted A/S
- Bjorn H. Fritzvold
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE