Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5766837 | Silver halide photographic material and method for producing the same | Seiji Yamashita, Yuji Yoshida | 1998-06-16 |
| 5498511 | Silver halide photographic material | Seiji Yamashita, Mitsuo Saitou, Tatsuya Ishizaka | 1996-03-12 |