Donat Frei

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Frauenfeld, CH

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Patents Grantslast 30 patents

Information Patent Grant
Abrasive particle with at most three surfaces and one corner
- Patent number 10,717,908
- Issue date Jul 21, 2020
- Robert Bosch GmbH
- Georg Hejtmann
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Abrasive particle with at most three surfaces and one corner
- Patent number 9,914,863
- Issue date Mar 13, 2018
- Robert Bosch GmbH
- Georg Hejtmann
- B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents

Information Patent Application
Abrasive Particle with at Most Three Surfaces and One Corner
- Publication number 20180142132
- Publication date May 24, 2018
- Robert Bosch GMBH
- Georg Hejtmann
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Abrasive Particle with at Most Three Surfaces and One Corner
- Publication number 20150210910
- Publication date Jul 30, 2015
- ROBERT BOSCH GmbH
- Georg Hejtmann
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...