Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828973 | Silver halide photographic material with heterocyclic quaternary ammonium nucleating agent | Shigeo Hirano, Ashita Murai | 1989-05-09 |
SS
Seiji Suzuki
Overall (1989): #58,322 of 140,708Top 45%
1
Patents 1989