Oswald Helmling

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Hasselroth, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for bleaching and delignification of lignocellulosic materials
- Patent number 5,246,543
- Issue date Sep 21, 1993
- Degussa Corporation
- Juergen Meier
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE