Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6128945 | Gas detecting method and its detector | Toshihiro Udaka, Kazuya Shinnishi, Kazuko Takamatsu | 2000-10-10 |
| 6055849 | Gas detector and its adjusting method | Toshihiro Udaka | 2000-05-02 |
| 4749473 | Process for removing ink from wastepaper | Yoji Isobe, Hiroyasu Hayano | 1988-06-07 |