Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858049 | Magnetic film and magnetic head using the same | Toshio Kobayashi, Ryoichi Nakatani, Noriyuki Kumasaka | 1989-08-15 |
| RE33022 | Ferromagnetic amorphous alloy | Shinji Takayama, Yasuo Tsukuda, Kazuo Shiiki, Mitsuhiro Kudo, Yasunobu Ogata +1 more | 1989-08-15 |
| 4851942 | Floating magnetic head having a magnetic core buried in a channel on an air bearing rail | Niroyuki Kumasaka, Takeo Yamashita, Noritoshi Saito, Yokuo Saitoh, Hiroshi Sakurai | 1989-07-25 |
| 4847715 | Magnetic head having short distance between gaps for recording reproducing and erasing | Noriyuki Kumasaka, Takeo Yamashita, Noritoshi Saito | 1989-07-11 |
| 4814921 | Multilayered magnetic films and thin-film magnetic heads using the same as a pole | Yoshihiro Hamakawa, Kazuo Shiiki, Yoshihiro Shiroishi, Isamu Yuitoo, Hitoshi Numasaka +2 more | 1989-03-21 |
| 4803338 | Magnetic head having improved track width narrowing grooves | Noriyuki Kumasaka, Takeo Yamashita, Hideo Zama, Juichi Morikawa | 1989-02-07 |