Seiji Akiyama

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Direct positive silver halide emulsion and a color diffusion transf...
- Patent number H1343
- Issue date Aug 2, 1994
- Fuji Photo Film Co., Ltd.
- Mitsuo Saitou
- 430 - Radiation imagery chemistry: process, composition, or product thereof