Gerd Ritter

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Guldental, DE

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Patents Grantslast 30 patents

Information Patent Grant
Cellulose matrix filter material
- Patent number 5,554,287
- Issue date Sep 10, 1996
- Seitz-Filter-Werke GmbH und Co.
- Dieter Beck
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Filter material in the form of flexible leaves or sheets and a meth...
- Patent number 5,223,139
- Issue date Jun 29, 1993
- Seitz Filter Werke Theo & Geo Seitz GmbH & Co.
- Helmut Ruger
- D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information Patent Grant
Filter material formed by fibride particles
- Patent number 5,141,643
- Issue date Aug 25, 1992
- Sietz-Filter-Werke Geo & Theo Seitz/GmbH & Co.
- Peter P. Breitbach
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE