Junichiro Minowa

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Funabashi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Light intensity attenuator and attenuating method
- Patent number 6,134,372
- Issue date Oct 17, 2000
- Sumitomo Osaka Cement Co., Ltd.
- Junichiro Ichikawa
- G02 - OPTICS
Information Patent Grant
Optical waveguide modulator device
- Patent number 5,982,958
- Issue date Nov 9, 1999
- Sumitomo Osaka Cement Co., Ltd.
- Junichiro Minowa
- G02 - OPTICS
Information Patent Grant
Optical waveguide modulator having a reduced D.C. drift
- Patent number 5,526,448
- Issue date Jun 11, 1996
- Sumitomo Cement Company, Ltd.
- Hirotoshi Nagata
- G02 - OPTICS