Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9047888 | MAMR head adapted for high speed switching | Hiroyuki Katada | 2015-06-02 |
| 9007724 | Head structure with electric damage protection for a microwave-assisted hard disk drive | Masaru Furukawa, Junguo Xu, Jianhua Li | 2015-04-14 |
| 9007723 | Microwave-assisted magnetic recording (MAMR) head employing advanced current control to establish a magnetic resonance state | Masukazu Igarashi, Masato Matsubara, Yo Sato, Kenji Sugiura | 2015-04-14 |
| 8988826 | MAMR head with a multi-layered side gap for stable oscillation of the STO | Mikito Sugiyama, Keiichi Nagasaka | 2015-03-24 |
| 8970996 | Spin-torque oscillator for microwave assisted magnetic recording | Keiichi Nagasaka, Masato Matsubara, Yuta Udou | 2015-03-03 |
| 8964332 | Microwave-assisted magnetic recording head with asymmetric side gap for shingled magnetic recording | Hiroyuki Katada, Maki Maeda | 2015-02-24 |
| 8879205 | High spin-torque efficiency spin-torque oscillator (STO) with dual spin polarization layer | Keiichi Nagasaka, Masukazu Igarashi | 2014-11-04 |
| 8848317 | Magnetic data recording system with mirror image asymmetric magnetic write elements | Ikuya Tagawa, Yasutaka Nishida, Hiroyuki Katada | 2014-09-30 |
| 8824103 | Magnetic recording head and magnetic recording apparatus | Kenji Sugiura, Mikito Sugiyama, Isao Nunokawa, Yo Sato, Katsuro Watanabe +2 more | 2014-09-02 |
| 8773822 | Spin-torque oscillator for microwave assisted magnetic recording | Masato Matsubara, Hiroyuki Katada, Keiichi Nagasaka | 2014-07-08 |
| 8705206 | Microwave assisted magnetic recording (MAMR) head having an offset spin torque oscillator (STO) and narrow trailing gap | Maki Maeda, Hiroyuki Katada | 2014-04-22 |
| 8687319 | Magnetic recording apparatus with magnetic recording head capable of recording information on a magnetic recording medium | Masukazu Igarashi, Masato Matsubara, Keiichi Nagasaka | 2014-04-01 |
| 8670201 | Magnetic recording device | Masato Matsubara | 2014-03-11 |
| 8643967 | Magnetic disk drive and microwave assisted recording method | Hiroyuki Katada, Yasutaka Nishida | 2014-02-04 |
| 8582225 | Microwave-assisted magnetic recording head and magnetic read/write apparatus using the same | Masukazu Igarashi, Masaru Furukawa | 2013-11-12 |
| 8570689 | Differential magnetoresistive effect head and magnetic recording/reading device | Yo Sato, Katsumi Hoshino, Takeshi Nakagawa, Hiroyuki Hoshiya | 2013-10-29 |
| 8547656 | Spin-torque oscillator (STO) for microwave-assisted magnetic recording (MAMR) and methods of use thereof | Masukazu Igarashi, Masato Matsubara, Keiichi Nagasaka | 2013-10-01 |
| 8537505 | Magnetoresistive effect head having a free layer and a magnetic domain control layer that applies a magnetic field more strongly in an upper part of the free layer | Kan Yasui, Nobuo Yoshida, Hiroyuki Takazawa | 2013-09-17 |
| 8537497 | Magnetic recording head and magnetic recording/reproducing apparatus | Keiichi Nagasaka, Yo Sato | 2013-09-17 |
| 8520338 | Magnetic recording head, method of manufacturing the same, and magnetic disk unit | Yuta Udo, Mikito Sugiyama, Nobuo Yoshida, Kenji Sugiura, Masashi Hattori | 2013-08-27 |
| 8472135 | Microwave-assisted magnetic recording head having a current confinement structure | Kikuo Kusukawa, Kazuhiko Hosomi, Katsuro Watanabe | 2013-06-25 |
| 8345380 | Spin torque oscillator and magnetic recording head and magnetic recording device mounted with the spin torque oscillator | Yo Sato, Keiichi Nagasaka, Masato Matsubara | 2013-01-01 |
| 8284527 | Magnetic heads having a graded domain control film and methods of manufacture thereof | Nobuo Yoshida, Kenichi Akita, Kan Yasui | 2012-10-09 |
| 8270122 | Magnetic recording and reproducing device including a differential read head | Takeshi Nakagawa, Hiroyuki Katada, Naoto Ito, Kenichi Meguro | 2012-09-18 |
| 8223464 | Differential head having a balanced output and method of manufacturing thereof | Kan Yasui, Takeshi Nakagawa, Hiroyuki Katada, Nobuo Yoshida, Hiroyuki Hoshiya | 2012-07-17 |