Keiji Hatakeyama

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Kanagawa-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Fluorescent lamp having visible and UV radiation
- Patent number 5,801,483
- Issue date Sep 1, 1998
- Toshiba Lighting & Technology Corp.
- Miho Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fluorescent lamp with UV suppressing film and its manufacturing method
- Patent number 5,227,693
- Issue date Jul 13, 1993
- Toshiba Lighting & Technology Corporation
- Yuichi Sakakibara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Ultraviolet-suppressed light source, coating agent used in the same...
- Patent number 5,051,650
- Issue date Sep 24, 1991
- Kabushiki Kaisha Toshiba
- Akira Taya
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Halophosphate phosphor and fluorescent lamp using the same
- Patent number 4,663,563
- Issue date May 5, 1987
- Kabushiki Kaisha Toshiba
- Akira Taya
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
Fluorescent lamp, self-ballasted fluorescent lamp and lighting appa...
- Publication number 20020057059
- Publication date May 16, 2002
- Kazuhisa Ogishi
- H01 - BASIC ELECTRIC ELEMENTS