Akimura; Yoshitaka
Patent Applications and Registrations
Patent applications and USPTO patent grants for Akimura; Yoshitaka.The latest application filed is for "method of forming negative dot images".
- Akimura; Yoshitaka - Minami-ashigara JP
| Patent | Date |
|---|---|
| Method of forming negative dot images Grant 4,385,108 - Takagi , et al. May 24, 1 | 1983-05-24 |
| Method for forming high contrast photographic image Grant 4,377,634 - Mifune , et al. March 22, 1 | 1983-03-22 |
| Silver halide photographic light-sensitive material Grant 4,243,739 - Mifune , et al. January 6, 1 | 1981-01-06 |
| Process for producing a high contrast photographic image Grant 4,221,857 - Okutsu , et al. September 9, 1 | 1980-09-09 |
| Silver halide photographic emulsion Grant 4,168,977 - Takada , et al. September 25, 1 | 1979-09-25 |
| Contrasty light-sensitive silver halide material containing a hydrazine derivative and a heterocyclic mercaptan Grant 4,166,742 - Mifune , et al. September 4, 1 | 1979-09-04 |
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