Issued Patents All Time
Showing 1–25 of 41 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 |
| 6975110 | Magnetic sensor utilizing magnetoresistance effect, method for driving magnetic sensor utilizing magnetoresistance effect and magnetic recording systems | Hideo Kaiju | 2005-12-13 |
| 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, Isamu Yuito +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, Eijin Moriwaki, Isamu Yuito +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, Isamu Yuito +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, Eijin Moriwaki, Isamu Yuito +5 more | 2001-10-23 |
| 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 |
| 6278578 | Narrow track thin film head having a focused ion beam etched air bearing surface | Hisashi Takano, Naoki Koyama, Hideo Tanabe, Eijin Moriwaki, Isamu Yuito +5 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, Isamu Yuito +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, Eijin Moriwaki, Isamu Yuito +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 |
| 5719729 | Magnetic head and recording and reproducing apparatus having an arrangement for improving coincidence between a magnetic center of a read head and physical center of a write head | Naoki Koyama, Yoshihiro Hamakawa, Isamu Yuitoo, Kanji Kawakami, Masahiro Kitada | 1998-02-17 |
| 5463518 | Magnetic head and magnetic recording and reproducing apparatus using a superconducting quantum interference device | Shigekazu Otomo, Noriyuki Kumasaka, Takeo Yamashita, Noritoshi Saito, Yoshinobu Tarutani | 1995-10-31 |
| 5461517 | Magneto-resistance effect type of recording/reproducing head | Mitsuo Suda, Masanori Tanabe, Shinji Narishige, Eiji Nakanishi, Kouichi Shimizu +2 more | 1995-10-24 |
| 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, Eijin Moriwaki | 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, Eijin Moriwaki +1 more | 1992-06-30 |
| 5083226 | Magnetic disk drive | Yoshihiro Shiroishi, Norio Ohta, Toshiaki Tsuyoshi, Hisashi Takano, Fumio Kugiya | 1992-01-21 |
| 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, Shigekazu Otomo, Noriyuki Kumasaka | 1990-07-24 |
| 4922360 | Magnetic head | Hisashi Takano, Naoki Koyama, Isamu Yuito, Hideo Tanabe | 1990-05-01 |
| 4907114 | Mangeto-resistive type read head | Masahiro Kitada, Hideo Tanabe, Hitoshi Nakamura, Isamu Yuito, Hisashi Takano | 1990-03-06 |