Raimo Pitkanen

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Karhula, FI

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Patents Grantslast 30 patents

Information Patent Grant
Method of deaerating and pumping a fiber suspension prior to washing
- Patent number 5,403,442
- Issue date Apr 4, 1995
- A. Ahlstrom A Corporation of Finland
- Kaj Henricson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of and apparatus for separating heavy impurities from fiber...
- Patent number 5,323,914
- Issue date Jun 28, 1994
- A. Ahlstrom Corporation
- Kaj Henricson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for improving flotation separation
- Patent number 5,240,621
- Issue date Aug 31, 1993
- A. Ahlstrom Corporation
- Jorma Elonen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for decreasing problems caused by residual or...
- Patent number 5,234,480
- Issue date Aug 10, 1993
- A. Ahlstrom Corporation
- Kaj Henricson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of treating a fiber suspension
- Patent number 5,219,472
- Issue date Jun 15, 1993
- A. Ahlstrom Corporation
- Jorma Elonen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE