Toshihiko Ishigami

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
High intensity discharge lamp containing iron and silver in the arc...
- Patent number 4,929,869
- Issue date May 29, 1990
- Kabushiki Kaisha Toshiba
- Akihiro Yonezawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High pressure metal vapor discharge lamp with radioactive material...
- Patent number 4,445,067
- Issue date Apr 24, 1984
- Tokyo Shibaura Denki Kabushiki Kaisha
- Akihiro Inoue
- H01 - BASIC ELECTRIC ELEMENTS