Kazumasa Ozawa

Follow

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical switch and switching method
- Patent number 6,002,819
- Issue date Dec 14, 1999
- Sumitomo Electric Industries, Ltd.
- Kazuhito Saito
- G02 - OPTICS
Information Patent Grant
Optical switch
- Patent number 5,940,553
- Issue date Aug 17, 1999
- Sumitomo Electric Industries, Ltd.
- Takashi Murakami
- G02 - OPTICS
Information Patent Grant
Optical switch
- Patent number 5,926,588
- Issue date Jul 20, 1999
- Sumitomo Electric Industries Ltd.
- Takashi Murakami
- G02 - OPTICS
Information Patent Grant
Optical switch, optical fiber arranging member and method of manufa...
- Patent number 5,446,810
- Issue date Aug 29, 1995
- Sumitomo Electric Industries, Ltd.
- Tsutomu Watanabe
- G02 - OPTICS