Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818255 | Material for gas separation | Tatsuki Oguchi, Munehisa Okada | 1989-04-04 |
| 4794942 | Air breather plug assembly for use in power transmission unit | Mitsuyoshi Yasuda, Kazuhito Ikemoto, Nobuaki Katayama | 1989-01-03 |