Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12431161 | Data storage device with track pitch determination for mitigating effects of servo pattern distortion | Hideki Zaitsu, So Ogiwara, Yoshio Soyama, Shuji Nishida | 2025-09-30 |
| 12347468 | Energy-assisted magnetic recording data storage device with opportunistic boosted laser pre-biasing | Guoxiao Guo, William B. Boyle, Qinghua Zeng, Dan Wang | 2025-07-01 |
| 12277957 | Data storage device with embedded mode hop predictor patterns | Guoxiao Guo | 2025-04-15 |
| 12100431 | Data storage device with symmetric split burst servo pattern | Guoxiao Guo, Yun-Gi Hong | 2024-09-24 |
| 12046265 | Data storage device with enhanced management of laser pre-bias and logic block addressing in heat-assisted magnetic recording | Guoxiao Guo, Erhard Schreck, William B. Boyle | 2024-07-23 |
| 11830524 | Data storage device with split burst servo pattern | Guoxiao Guo, Ichiro Yokokawa | 2023-11-28 |
| 11587587 | Method to measure thermal protrusion by sensing spacing change due to pre-lasing | Guoxiao Guo, Masaru Furukawa, Shaomin Xiong, Duc H. Banh | 2023-02-21 |
| 11587586 | Determining laser induced thermal protrusion and laser threshold in heat-assisted magnetic recording (HAMR) data storage | Guoxiao Guo, Masaru Furukawa, Shaomin Xiong, Duc H. Banh | 2023-02-21 |
| 10923146 | Data storage device employing triangle-like dither to spread track squeeze | Guoxiao Guo, Edgar D. Sheh, Due H. Banh | 2021-02-16 |
| 8873183 | Disk drive and method of writing servo write tracks to a disk | Tomoo Ozaki, Makoto Takase, Takao Horiguchi | 2014-10-28 |
| 8743496 | Servo pattern compatible with planarization constraints of patterned media and use of a single master template | Keiichiro Nonaka, Masahito Kobayashi | 2014-06-03 |
| 8670207 | Servo pattern compatible with planarization constraints of patterned media and use of a single master template | Keiichiro Nonaka, Masahito Kobayashi | 2014-03-11 |
| 8630051 | Patterned media with an alternating series of concentric servo zones and overlap zones | Keiichiro Nonaka, Masahito Kobayashi | 2014-01-14 |
| 8625219 | Patterned media with an alternating series of concentric servo zones and overlap zones | Keiichiro Nonaka, Masahito Kobayashi | 2014-01-07 |
| 8619379 | Patterned media with an alternating series of concentric servo zones and overlap zones | Keiichiro Nonaka, Masahito Kobayashi | 2013-12-31 |
| 8559126 | Method and apparatus for positioning a magnetic-recording head | Minoru Hashimoto, Thambirajah Suthasun | 2013-10-15 |
| 8531794 | Patterned media with an alternating series of concentric servo zones and overlap zones | Keiichiro Nonaka, Masahito Kobayashi | 2013-09-10 |
| 8526132 | Servo patterning compatible with planarization of patterned magnetic disks | Thomas R. Albrecht, Masahito Kobayashi, Keishi Takahashi | 2013-09-03 |
| 8085489 | Method for writing servo patterns and disk drive including a controller for writing servo patterns according to the method | Ryohheita Hattori, Masaki Yoshioka, Suthasun Thambirajah, Minoru Hashimoto | 2011-12-27 |
| 8023220 | Method for writing servo data to a disk and disk drive configured to write servo data utilizing the method | Masaki Yoshioka, Makoto Takase, Ryohheita Hattori | 2011-09-20 |
| 7646561 | Method of writing pattern in disk, method of following track on disk, and apparatus for writing pattern in disk | Kohji Takasaki, Fuminori Sai, Tomoyuki Oyama, Satoshi Yamamoto | 2010-01-12 |
| 7116509 | Magnetic disk apparatus and servo signal recording method | Yohichi Kusagaya, Takashi Yamaguchi, Makoto Horisaki, Kenichiro Sugiyama | 2006-10-03 |
| 7085084 | Magnetic disk apparatus and servo pattern recording method therefor | Naoki Satoh, Makoto Horisaki | 2006-08-01 |
| 6999261 | Magnetic disk device and servo write method | Kenichiro Sugiyama, Marutomo Goto, Takashi Yamaguchi | 2006-02-14 |
| 6970320 | Servo pattern recording method | Kenichiro Sugiyama, Takashi Yamaguchi | 2005-11-29 |