Jan Janson

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Esbo, FI

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Patents Grantslast 30 patents

Information Patent Grant
Method for preventing yellowing of lignocellulosic products
- Patent number 5,658,431
- Issue date Aug 19, 1997
- Oy Keskuslaboratorio - Centrallaboratorium Ab
- Jan Janson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE