Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6283446 | Gate valve system | Toshiyuki Sato, Tamotsu Yamashita, Yasuhiko Ito, Koichi Nishigaki | 2001-09-04 |
| 4375031 | Method and device for measuring a degree of exhaustion of photographic processing solutions | Yujiro Kaneko | 1983-02-22 |