Bertel K. Hakulin

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Helsinki, FI

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Patents Grantslast 30 patents

Information Patent Grant
Method for treating black liquor
- Patent number 5,201,172
- Issue date Apr 13, 1993
- A. Ahlstrom Corporation
- Bertel K. Hakulin
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Combustion method
- Patent number 4,616,576
- Issue date Oct 14, 1986
- A. Ahlstrom Corporation
- Folke Engstrom
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL