Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6696926 | Audible floor call recording method and braille information notification device | Yohsinobu Tsukamoto, Joji Tanigawa | 2004-02-24 |
| 4390618 | Silver halide photographic light-sensitive materials | Hidetoshi Kobayashi, Shigeo Hirano, Takeshi Hirosa, Keiichi Adachi | 1983-06-28 |