Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4802942 | Method of making multilayer composite hollow fibers | Tohru Takemura, Hajime Itoh, Jun Kamo | 1989-02-07 |
HY
Haruhiko Yoshida
Overall (1989): #107,355 of 140,708Top 80%
1
Patents 1989