Hisasi Izumita

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Patents Grantslast 30 patents

Information Patent Grant
Optical fiber component optical coupler and method of producing the...
- Patent number RE35222
- Issue date Apr 30, 1996
- Sumitomo Electric Industries, Ltd.
- Sumio Hoshino
- 385 - Optical waveguides
Information Patent Grant
Optical fiber component optical coupler and method of producing the...
- Patent number 5,202,947
- Issue date Apr 13, 1993
- Sumitomo Electric Industries, Ltd.
- Sumio Hoshino
- G02 - OPTICS