Wolfgang Porcham

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Patents Grantslast 30 patents

Information Patent Grant
Gem comprised of a glass based on silicon oxide and calcium oxide
- Patent number 5,559,061
- Issue date Sep 24, 1996
- D. Swarovski & Co.
- Norbert Bilek
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Process for producing silane
- Patent number 4,623,531
- Issue date Nov 18, 1986
- D. Swarovski & Co.
- Wolfgang Porcham
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for producing silicon tetrafluoride
- Patent number 4,615,872
- Issue date Oct 7, 1986
- D. Swarovski & Co.
- Wolfgang Porcham
- C01 - INORGANIC CHEMISTRY