Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7306697 | Used paper diaper processing method and used paper diaper processing device | Chiyuki Kikushima | 2007-12-11 |
| 4909923 | Method for hydrogenation of coal tar pitch | Hiroshi Okazaki, Munekazu Nakamura, Osamu Togari, Noriyuki Yoneda, Haruhiko Yoshida +1 more | 1990-03-20 |
| 4672401 | Heat-sensitive recording materials | Yasuharu Yamada, Hidehiko Koishi | 1987-06-09 |