Issued Patents All Time
Showing 1–25 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8724434 | Magnetic recording system and magnetic recording device | Koichi Shinohara, Tatsuo Shibata, Masashi Sahashi, Tomohiro Nozaki | 2014-05-13 |
| 8680855 | Apparatus for measuring magnetic field of microwave-assisted head | Isamu Sato, Hiroshi Ikeda, Tetsuya Roppongi, Noboru Yamanaka, Tsutomu Aoyama | 2014-03-25 |
| 8358127 | Apparatus for measuring magnetic field of microwave-assisted head | Isamu Sato, Hiroshi Ikeda, Tetsuya Roppongi, Noboru Yamanaka, Tsutomu Aoyama | 2013-01-22 |
| 8094399 | Magnetic recording apparatus provided with microwave-assisted head | Tetsuya Roppongi, Takuya Adachi, Isamu Sato, Hiroshi Ikeda | 2012-01-10 |
| 7920357 | Magnetic recording method using ferromagnetic resonance and thin-film magnetic head for using the method | Isamu Sato, Tetsuya Roppongi, Yuichi Watabe, Norikazu Ota, Hiroshi Ikeda | 2011-04-05 |
| 7123451 | Thin-film magnetic head for reading magnetic information on a hard disk by utilizing a magnetoresistance effect | Rachid Sbiaa, Haruyuki Morita | 2006-10-17 |
| 6707643 | Perpendicular magnetic recording head having narrow recording gap and perpendicular magnetic recording apparatus using the same | Akihiko Takeo, Tetsuya Roppongi, Shinichi Horinouchi, Haruyuki Morita | 2004-03-16 |
| 6680820 | Method of maintaining a constant flying height of a magnetic head and a magnetic disk drive utilized therefor | Kazumasa Fukuda, Takamitsu Tsuna | 2004-01-20 |
| 6639754 | Perpendicular magnetic recording head and perpendicular magnetic recording apparatus | Tomoko Taguchi, Tetsuya Roppongi, Shinichi Horinouchi, Haruyuki Morita | 2003-10-28 |
| 6166880 | Thin film magnetic head which prevents errors due to electric discharge | Atsuo Kobayashi | 2000-12-26 |
| 5991110 | Thin film magnetic head and magnetic recording and reproducing apparatus | Masanori Sakai, Makoto Yoshida, Kazumasa Fukuda | 1999-11-23 |
| 5847899 | Magnetic disk recording and reproducing apparatus | Kazumasa Fukuda, Masanori Sakai, Joichiro Ezaki | 1998-12-08 |
| 5844749 | Thin film magnetic head with an induction type magnetic transducer for suppressing sub-pulses | Masanori Sakai, Makoto Yoshida, Kazumasa Fukuda | 1998-12-01 |
| 5772794 | Manufacturing method of magnetic head apparatus with spin valve effect magnetoresistive head | Yasufumi Uno, Daisuke Miyauchi | 1998-06-30 |
| 5768065 | Thin film magnetic head | Noriyuki Ito, Yuzuru Iwai, Junichi Sato | 1998-06-16 |
| 5685064 | Process of manufacturing a magnetic head slider assembly | Atsushi Iijima | 1997-11-11 |
| 5636087 | Magnetic head slider assembly | Atsushi Iijima | 1997-06-03 |
| 5417313 | Disc rotor for preventing squeal | Toshitaka Izumihara, Toru Yoshino | 1995-05-23 |
| 5416656 | Magnetic recording and reproducing head having a flat surface with round front ridge | Kazumasa Fukuda, Monjiro Momoi, Takamitsu Tsuna | 1995-05-16 |
| 5238089 | Squeak prevention for disc brake | Toru Yoshino, Toshitaka Izumihara | 1993-08-24 |
| 5236735 | Method of producing a thin film magnetic head | Makoto Yoshida, Yuzuru Iwai, Noboru Yamanaka, Jun Shouzi, Tsutomu Koyanagi +2 more | 1993-08-17 |
| 5220471 | Air bearing slider having a longitudinal groove in surface remote from recording medium | — | 1993-06-15 |
| 5200869 | Flying type thin film magnetic head having a transducing element | — | 1993-04-06 |
| 5134531 | Magnetic head having a slider with a particular surface arrangement | Shunichi Katase | 1992-07-28 |
| 5126901 | Thin film magnetic head having a narrow upper surface | Monjiro Momoi, Kazumasa Fukuda | 1992-06-30 |