Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881144 | Thin film magnetic head | Isamu Yuito, Eijin Moriwaki, Yoshihiro Hamakawa, Hisashi Takano | 1989-11-14 |
| RE33022 | Ferromagnetic amorphous alloy | Shinji Takayama, Yasuo Tsukuda, Shigekazu Otomo, Mitsuhiro Kudo, Yasunobu Ogata +1 more | 1989-08-15 |
| 4814921 | Multilayered magnetic films and thin-film magnetic heads using the same as a pole | Yoshihiro Hamakawa, Yoshihiro Shiroishi, Isamu Yuitoo, Hitoshi Numasaka, Noriyuki Kumasaka +2 more | 1989-03-21 |