Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814145 | Apparatus for carbonizing and activating fiber materials | Akihiko Yoshida, Atsushi Nishino, Yasuhiro Takeuchi | 1989-03-21 |
IT
Ichiro Tanahashi
Overall (1989): #102,566 of 140,708Top 75%
1
Patents 1989