Issued Patents All Time
Showing 1–25 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9934797 | Multilayer element including base multilayer body, magnetic sensor and microwave assisted magnetic head | Hirokazu Takahashi, Tetsuya Roppongi | 2018-04-03 |
| 9824701 | Microwave assisted magnetic recording head with spin torque oscillator corner angle relationship, head gimbal assembly, and magnetic recording device | Zhenyao Tang, Tetsuya Roppongi, Hironobu Matsuzawa, Hirokazu Takahashi | 2017-11-21 |
| 9741373 | Microwave assisted magnetic head, head gimbal assembly, and magnetic recording device | Tetsuhito Shinohara, Tetsuya Roppongi | 2017-08-22 |
| 9495983 | Magnetic head with microwave-generating element and ground line therefor | Takuya Adachi | 2016-11-15 |
| 9318132 | Magnetic head, magnetic head assembly, and magnetic recording and reproducing apparatus | Tetsuhito Shinohara, Tsutomu Aoyama | 2016-04-19 |
| 9299366 | Magnetic recording and reproducing apparatus | Tsutomu Aoyama, Akimasa Kaizu, Tetsuhito Shinohara | 2016-03-29 |
| 8693143 | Suspension with high conductivity ground layer for microwave signal transmission line, for magnetic head slider | Eriko Ajioka | 2014-04-08 |
| 8611045 | Magnetic recording apparatus | Akimasa Kaizu, Tsutomu Aoyama | 2013-12-17 |
| 8611034 | Microwave-assisted magnetic recording device and method using non-constant microwave | Tatsuhiro Kobayashi, Akimasa Kaizu | 2013-12-17 |
| 8587903 | Suspension with high conductivity ground layer | Eriko Ajioka | 2013-11-19 |
| 8582239 | Microwave assisted magnetic recording head and magnetic recording method therewith | Kei Hirata, Tsutomu Aoyama, Isamu Sato | 2013-11-12 |
| 8462465 | Head gimbal assembly for microwave-assisted magnetic recording in impedance matching between microwave radiation element and microwave transmission line | Takuya Adachi | 2013-06-11 |
| 8456962 | Magnetic head for microwave assisted magnetic recording | Takekazu Yamane, Akimasa Kaizu, Naomichi Degawa, Hayato Koike | 2013-06-04 |
| 8264916 | Microwave assisted magnetic head and magnetic disk device | Tsutomu Aoyama, Tetsuya Roppongi, Kiyoshi Noguchi, Isamu Sato | 2012-09-11 |
| 8040633 | Magnetic head and magnetic recording-reproducing apparatus | Akimasa Kaizu, Kazuya Shimakawa | 2011-10-18 |
| 7938990 | Pattern drawing method, method of manufacturing a master disk for manufacturing information recording media, and method of manufacturing an information recording medium | — | 2011-05-10 |
| 7880997 | Magnetic recording apparatus and magnetic recording medium | Akimasa Kaizu, Satoshi Tomikawa | 2011-02-01 |
| 7864468 | Magnetic recording and reproducing apparatus including a magnetic recording medium and a magnetic head for recording data on the magnetic recording medium | Akimasa Kaizu, Katsumichi Tagami | 2011-01-04 |
| 7864469 | Information recording medium, recording/reproducing apparatus, and stamper | Kazuya Shimakawa | 2011-01-04 |
| 7830635 | Magnetic recording medium, recording/reproducing apparatus, and stamper | Akimasa Kaizu, Makoto Moriya | 2010-11-09 |
| 7791838 | Magnetic head apparatus and magnetic recording and reproducing apparatus | Isamu Sato, Koichi Terunuma, Tetsuya Roppongi, Hiroshi Ikeda | 2010-09-07 |
| 7773323 | Magnetic recording medium, recording reproducing apparatus, and stamper | Akimasa Kaizu, Makoto Moriya | 2010-08-10 |
| 7672075 | Magnetic recording medium, recording/reproducing apparatus, and stamper | Kazuya Shimakawa | 2010-03-02 |
| 7604880 | Information recording medium | Mitsuru Takai, Katsumichi Tagami, Kazuya Shimakawa, Takahiro Suwa | 2009-10-20 |
| 7597972 | Magnetic recording medium including a patterned intermediate layer and a non-patterned soft magnetic layer and manufacturing method thereof | Mitsuru Takai, Katsumichi Tagami, Kazuya Shimakawa | 2009-10-06 |