Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7159303 | Method for manufacturing magnetic head device | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Hisashi Takano, Eijin Moriwaki +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, Hisashi Takano, Eijin Moriwaki +14 more | 2006-05-30 |
| 6937445 | Recording/reproducing separated type head with heat radiating structure | Kiyoshi Akamatsu | 2005-08-30 |
| 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, Eijin Moriwaki, 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, Hisashi Takano, Eijin Moriwaki +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, Eijin Moriwaki, 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, Eijin Moriwaki, 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, Hisashi Takano, Eijin Moriwaki +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, Eijin Moriwaki, 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, Eijin Moriwaki, 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, Hisashi Takano, Eijin Moriwaki +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, Eijin Moriwaki, 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, Hisashi Takano, Eijin Moriwaki +14 more | 2000-01-04 |
| 5897969 | Method of fabricating a magnetoresistive thin-film magnetic head | Akira Taniyama, Makoto Morijiri, Haruko Tanaka, Eiji Ashida, Hiroaki Koyanagi +2 more | 1999-04-27 |
| 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, Eijin Moriwaki, Kazuo Shiiki +5 more | 1998-12-15 |
| 5808843 | Magnetoresistance effect reproduction head | Toshio Kobayashi, Masahiro Kitada, Noboru Shimizu, Naoki Koyama | 1998-09-15 |
| 5726837 | Multilayer magnetoresistance effect-type magnetic head | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Hisashi Takano, Eijin Moriwaki +14 more | 1998-03-10 |
| 5701221 | Magnetoresistive thin-film magnetic head and method of fabrication thereof | Akira Taniyama, Makoto Morijiri, Haruko Tanaka, Eiji Ashida, Hiroaki Koyanagi +2 more | 1997-12-23 |
| 5390061 | Multilayer magnetoresistance effect-type magnetic head | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Hisashi Takano, Eijin Moriwaki +14 more | 1995-02-14 |
| 5371643 | Magnetoresistive head structure that prevents under film from undesirable etching | Makoto Morijiri, Tooru Takeura, Katsunori Ohwada, Masahiro Kitada | 1994-12-06 |
| 5287237 | Antiferromagnetic film superior in corrosion resistance, magnetoresistance-effect element and magnetoresistance-effect head including such thin film | Masahiro Kitada, Noboru Shimizu, Hideo Tanabe, Ryoichi Nakatani, Naoki Koyama | 1994-02-15 |
| 5212609 | Magnetoresistive head | Makoto Morijiri, Tooru Takeura, Naoki Koyama, Masahiro Kitada | 1993-05-18 |
| 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, Hisashi Takano, Naoki Koyama, Eijin Moriwaki, Shinobu Sasaki +1 more | 1992-06-30 |
| 4922360 | Magnetic head | Hisashi Takano, Naoki Koyama, Kazuo Shiiki, Hideo Tanabe | 1990-05-01 |
| 4907114 | Mangeto-resistive type read head | Kazuo Shiiki, Masahiro Kitada, Hideo Tanabe, Hitoshi Nakamura, Hisashi Takano | 1990-03-06 |