Tsutomu Hirayama

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Pulse signal control circuits with improved turn-off characteristic
- Patent number 4,555,641
- Issue date Nov 26, 1985
- NEC Corporation
- Hiroshi Hada
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Pulse signal control circuits
- Patent number 4,359,648
- Issue date Nov 16, 1982
- Nippon Electric Co., Ltd.
- Hiroshi Hada
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Plasma display system
- Patent number 4,296,357
- Issue date Oct 20, 1981
- Nippon Electric Co., Ltd.
- Tsutomu Hirayama
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Driving circuit for a gas discharge display panel
- Patent number 4,100,461
- Issue date Jul 11, 1978
- Nippon Electric Co., Ltd.
- Hiroshi Hada
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS