Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806462 | Silver halide photographic material comprising doped divalent metal | Naoto Ohshima, Shunji Takada | 1989-02-21 |
SY
Seiji Yamashita
Overall (1989): #58,251 of 140,708Top 45%
1
Patents 1989