Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868106 | Analytical element and method for determining a component in a test sample | Tsukasa Ito, Akira Onishi, Masayo Ishikawa | 1989-09-19 |
| 4840886 | Silver halide color photographic material containing a 1h-pyrazole (3,2-C)-s-triazole derived magenta coupler | Toshifumi Iijima, Kenji Kumashiro, Hiroshi Kashiwagi, Koichi Hatta, Yuji Hotta +4 more | 1989-06-20 |