Keijo Raak

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Varkaus, FI

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for recovering heat in a spent liquor recovery boiler
- Patent number 5,701,829
- Issue date Dec 30, 1997
- Ahlstrom Machinery Corporation
- Keijo Raak
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Increasing the capacity of a recovery boiler by withdrawing some of...
- Patent number 5,672,246
- Issue date Sep 30, 1997
- Ahlstrom Machinery Oy
- Keijo Raak
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for recovering heat in a spent liquor recovery...
- Patent number 5,603,803
- Issue date Feb 18, 1997
- Ahlstrom Machinery Corporation
- Keijo Raak
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE