Yasuo Kimura

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rare earth element-doped optical waveguide and process for producin...
- Patent number 5,206,925
- Issue date Apr 27, 1993
- Hitachi Cable Limited
- Masataka Nakazawa
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical waveguide type star coupler
- Patent number 5,134,672
- Issue date Jul 28, 1992
- Hitachi Cable, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS