Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7154714 | Recording/reproducing separated type magnetic head having differential bias type magnetic domain control structure | Hiroshi Fukui, Shuichi Kojima, Kouji Kataoka | 2006-12-26 |
| 6033792 | Soft magnetic thin film, and magnetic head and magnetic recording device using the same | Fumiyoshi Kirino, Nagatugu Koiso, Noriyuki Kumasaka, Takeshi Miura | 2000-03-07 |
| 5873955 | Soft magnetic thin film, and magnetic head and magnetic recording device using the same | Fumiyoshi Kirino, Nagatugu Koiso, Noriyuki Kumasaka, Takeshi Miura | 1999-02-23 |
| 5663006 | Corrosion-resistant magnetic film and magnetic head using the same | Hitoshi Nakamura | 1997-09-02 |
| 5463518 | Magnetic head and magnetic recording and reproducing apparatus using a superconducting quantum interference device | Noriyuki Kumasaka, Kazuo Shiiki, Takeo Yamashita, Noritoshi Saito, Yoshinobu Tarutani | 1995-10-31 |
| 5247415 | Magnetic head having main and auxiliary magnetic paths | Noriyuki Kumasaka, Takeo Yamashita, Toshio Kobayashi, Ryoichi Nakatani | 1993-09-21 |
| 5159505 | Rotating drum having a center of gravity in registry with an axis of rotation | Yasuaki Horiuchi, Kuninori Imai, Takeshi Tajima, Takeo Yamashita, Noriyuki Kumasaka | 1992-10-27 |
| 4972285 | Amorphous magnetic alloy of Co-Nb-Zr system and magnetic head made from the same | Noriyuki Kumasaka, Hideo Fujiwara, Shinji Takayama, Takeo Yamashita, Noritoshi Saito +1 more | 1990-11-20 |
| 4943879 | Thin film magnetic head including magnetic layers having high saturation magnetic flux density and metal film for avoiding deterioration during manufacturing | Hisashi Takano, Yoshihiro Hamakawa, Kazuo Shiiki, Noriyuki Kumasaka | 1990-07-24 |
| 4935311 | Magnetic multilayered film and magnetic head using the same | Ryoichi Nakatani, Toshio Kobayashi, Noriyuki Kumasaka, Noritoshi Saito | 1990-06-19 |
| 4935314 | Ferromagnetic film and magnetic head using the same | Toshio Kobayashi, Ryoichi Nakatani, Noriyuki Kumasaka | 1990-06-19 |
| 4920013 | Magnetic Multilayer structure | Toshio Kobayashi, Ryoichi Nakatani, Noriyuki Kumasaka | 1990-04-24 |
| 4894098 | Process for preparing magnetic layer and magnetic head prepared using the same | Noriyuki Kumasaka, Ryo Imura, Ryo Suzuki, Yutaka Sugita | 1990-01-16 |
| 4891278 | Ferrromagnetic thin film and magnetic head using it | Ryoichi Nakatani, Noriyuki Kumasaka, Noritoshi Saito, Toshio Kobayashi, Masahiko Fujishiro | 1990-01-02 |
| 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 |
| 4774616 | Magnetic head having an integrated recording and playback head and an erasure head | Noriyuki Kumasaka, Hideo Fujiwara, Takeo Yamashita, Noritoshi Saito, Mitsuhiro Kudo | 1988-09-27 |
| 4772976 | Process for preparing magnetic layer and magnetic head prepared using the same | Noriyuki Kumasaka, Ryo Imura, Ryo Suzuki, Yutaka Sugita | 1988-09-20 |
| 4769729 | Magnetic head having ferromagnetic amorphous alloy multi-layered film | Noriyuki Kumasaka, Takeo Yamashita, Noritoshi Saito | 1988-09-06 |
| 4766039 | Magnetic head made from amorphous magnetic film | Noriyuki Kumasaka, Noritoshi Saito, Takeo Yamashita, Kazuo Shiiki, Yoshihiro Hamakawa | 1988-08-23 |
| 4748089 | Multilayered ferromagnetic amorphous alloy film and magnetic head employing the same | Noriyuki Kumasaka, Kazuo Shiiki, Yoshihiro Shiroishi, Takeo Yamashita, Noritoshi Saito +2 more | 1988-05-31 |