Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880351 | Variable capacity turbine | Osamu Kubota, Shunji Yano, Fusao Tateishi, Etsuo Noda, Koji Yamaguchi +1 more | 1989-11-14 |
| 4877456 | Antioxidant wax for rubber | Kaoru Chikamune, Manabu Tokuda, Kyoshi Utsunomiya, Yoshii Hitofude | 1989-10-31 |
| 4869214 | Valve operating mechanism for internal combustion engine | Kenichi Nagahiro, Yoshio Ajiki, Masaaki Katoh | 1989-09-26 |
| 4854125 | Hydrostatically operated continuously variable transmission | — | 1989-08-08 |
| 4848086 | Boost pressure control method for a supercharged internal combustion engine | Osamu Kubota, Noriyuki Kishi, Atsushi Katoh | 1989-07-18 |
| 4814239 | Vertical magnetic recording medium and method of manufacturing the same | Motozo Yoshikiyo, Shizuka Yoshii, Iwao Okamoto | 1989-03-21 |