Yoshikatsu Tamaoki

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Sendai, JP

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Patents Grantslast 30 patents

Information Patent Grant
Color display device
- Patent number 6,323,832
- Issue date Nov 27, 2001
- Junichi Nishizawa
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Holder with semiconductor lighting device
- Patent number 4,964,023
- Issue date Oct 16, 1990
- Nishizawa; Junichi
- Junichi Nishizawa
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Holder with semiconductor lighting device
- Patent number 4,831,504
- Issue date May 16, 1989
- Nishizawa; Junichi
- Junichi Nishizawa
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES