Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7159303 | Method for manufacturing magnetic head device | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano +14 more | 2007-01-09 |
| 7054120 | Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effect | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano +14 more | 2006-05-30 |
| 6839200 | Combination perpendicular magnetic head having shield material formed at both ends of an upper pole of a write element | Hisashi Takano, Naoki Koyama, Hideo Tanabe, Isamu Yuito, Kazuo Shiiki +5 more | 2005-01-04 |
| 6687099 | Magnetic head with conductors formed on endlayers of a multilayer film having magnetic layer coercive force difference | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano +14 more | 2004-02-03 |
| 6665141 | Magnetic head having track width defined by trench portions filled with magnetic shield material | Hisashi Takano, Naoki Koyama, Hideo Tanabe, Isamu Yuito, Kazuo Shiiki +5 more | 2003-12-16 |
| 6538844 | Method of fabricating a magnetic head by focused ion beam etching | Hisashi Takano, Naoki Koyama, Hideo Tanabe, Isamu Yuito, Kazuo Shiiki +5 more | 2003-03-25 |
| 6483677 | Magnetic disk apparatus including magnetic head having multilayered reproducing element using tunneling effect | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano +14 more | 2002-11-19 |
| 6307707 | Narrow track thin film head including magnetic poles machined by focused ion beam etching | Hisashi Takano, Naoki Koyama, Hideo Tanabe, Isamu Yuito, Kazuo Shiiki +5 more | 2001-10-23 |
| 6278578 | Narrow track thin film head having a focused ion beam etched air bearing surface | Hisashi Takano, Naoki Koyama, Hideo Tanabe, Isamu Yuito, Kazuo Shiiki +5 more | 2001-08-21 |
| 6278593 | Magnetoresistance effect elements and magnetic heads using the tunneling magnetoresistive effect | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano +14 more | 2001-08-21 |
| 6111723 | Narrow track thin film magnetic head suitable for high density recording and reproducing operations and fabrication method thereof wherein an air bearing surface has at least one groove containing a non-magnetic electrically conductive layer | Hisashi Takano, Naoki Koyama, Hideo Tanabe, Isamu Yuito, Kazuo Shiiki +5 more | 2000-08-29 |
| 6011674 | Magnetoresistance effect multilayer film with ferromagnetic film sublayers of different ferromagnetic material compositions | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano +14 more | 2000-01-04 |
| 5850326 | Narrow track thin film magnetic head suitable for high density recording and reproducing operations and fabrication method thereof wherein an air bearing surface has at least one groove containing a non-magnetic electrically conductive layer | Hisashi Takano, Naoki Koyama, Hideo Tanabe, Isamu Yuito, Kazuo Shiiki +5 more | 1998-12-15 |
| 5726837 | Multilayer magnetoresistance effect-type magnetic head | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano +14 more | 1998-03-10 |
| 5390061 | Multilayer magnetoresistance effect-type magnetic head | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano +14 more | 1995-02-14 |
| 5168409 | Integrated magnetic head having a magnetic layer functioning as both a magnetic shield and a magnetic pole | Naoki Koyama, Hisashi Takano, Kazuo Shiiki | 1992-12-01 |
| 5126907 | Thin film magnetic head having at least one magnetic core member made at least partly of a material having a high saturation magnetic flux density | Yoshihiro Hamakawa, Isamu Yuito, Hisashi Takano, Naoki Koyama, Shinobu Sasaki +1 more | 1992-06-30 |
| 4881144 | Thin film magnetic head | Isamu Yuito, Kazuo Shiiki, Yoshihiro Hamakawa, Hisashi Takano | 1989-11-14 |
| 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 |
| 4760481 | Thin film magnetic head having an improved coil | Isamu Yuito, Kazuo Shiiki, Keiko Shiokawa, Yoshihiro Hamakawa, Saburo Suzuki +1 more | 1988-07-26 |