Issued Patents 1982
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4358528 | Formation of black-and-white silver-containing negative images by a diffusion transfer process | Yoshihiro Takagi | 1982-11-09 |
| 4357250 | Nitrogen-containing terpolymer-based compositions useful as multi-purpose lubricant additives | — | 1982-11-02 |
| 4322493 | Reversal processing methods for black and white photographic light-sensitive materials | Haruo Shibaoka | 1982-03-30 |
| 4320019 | Multi-purpose additive compositions and concentrates containing same | — | 1982-03-16 |
| 4309499 | Formation of black-and-white silver-containing negative images by a diffusion transfer process | Yoshihiro Takagi | 1982-01-05 |