Hideo Nagatomo

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Message providing apparatus
- Patent number 6,717,522
- Issue date Apr 6, 2004
- Toppan Printing Co., Ltd.
- Hideo Nagatomo
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method of preventing color accurate reproductions using color photo...
- Patent number 4,325,981
- Issue date Apr 20, 1982
- Toppan Printing Co., Ltd.
- Takeo Sugiura
- G07 - CHECKING-DEVICES
Information Patent Grant
Forgery resistant document with colored areas and method for thwart...
- Patent number 4,277,514
- Issue date Jul 7, 1981
- Toppan Printing Co., Ltd.
- Takeo Sugiura
- G07 - CHECKING-DEVICES