Hans-Joachim Weitzel

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Wikon, CH

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Patents Grantslast 30 patents

Information Patent Grant
Slurry containing an agglomerated carbonate-containing pigment
- Patent number 5,989,332
- Issue date Nov 23, 1999
- Pluess Staufer A. G.
- Hans-Joachim Weitzel
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE