Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693457 | Silver halide color photographic light sensitive material | Takaaki Kojima, Tomoyuki Nakayama | 1997-12-02 |
| 5608058 | Processing for purifying crown compounds | Shinri Tanaka | 1997-03-04 |