Hiromasa Kanno

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Matrix type display apparatus
- Patent number 6,542,139
- Issue date Apr 1, 2003
- Oki Electric Industry Co., Ltd.
- Hiromasa Kanno
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Display apparatus utilizing a thermally color reversible display me...
- Patent number 4,442,429
- Issue date Apr 10, 1984
- Oki Electric Industry Co., Ltd.
- Shintaro Kotani
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS