Michimasa Matsukawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process of removing platinum inclusions from laser glass
- Patent number 4,919,699
- Issue date Apr 24, 1990
- Hoya Corporation
- Michimasa Matsukawa
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Silicophosphate laser glass
- Patent number 4,820,662
- Issue date Apr 11, 1989
- Hoya Corporation
- Tetsuro Izumitani
- C03 - GLASS MINERAL OR SLAG WOOL