Issued Patents All Time
Showing 25 most recent of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11049518 | Data storage device defining track trajectory to reduce AC track squeeze | Takehiko Hamaguchi, Masaomi Ikeda, Naoto Ito | 2021-06-29 |
| 10699745 | Data storage device defining track trajectory to reduce AC track squeeze | Takehiko Hamaguchi, Masaomi Ikeda, Naoto Ito | 2020-06-30 |
| 10607645 | Data storage device generating PES RRO and data sector squeeze RRO for a plurality of zones | Takehiko Hamaguchi | 2020-03-31 |
| 10414117 | Tile unit | — | 2019-09-17 |
| 8351311 | Semiconductor integrated circuit and optical disk device having the same | Toshiya Matsuda | 2013-01-08 |
| 7643261 | Semiconductor device | Satoshi Fujita, Takehiko Umeyama | 2010-01-05 |
| 7636212 | Magnetic disk drive with control of sense current of magnetic head | Akira Morinaga, Hideki Zaitsu, Hideo Tanabe | 2009-12-22 |
| 7443625 | Magnetic disk drive | Takehiko Hamaguchi, Atsushi Nakamura, Yasutaka Nishida, Hisashi Takano, Yohji Maruyama +2 more | 2008-10-28 |
| 7330324 | Magnetic disk drive having a function for using a thermal protrusion amount for flying height management and an inspection device having such a function | Akira Morinaga, Yoji Maruyama, Norifumi Miyamoto | 2008-02-12 |
| 7227818 | Magneto-optical data recording/reproducing method | Tsuyoshi Toda, Takeshi Maeda, Fumio Kugiya, Hiroyuki Tsuchinaga, Fumiyoshi Kirino +2 more | 2007-06-05 |
| 7136340 | Semiconductor integrated circuit and medium record playback device | Satoshi Fujita | 2006-11-14 |
| 7057838 | Magnetic disk device having a write head to write by shifting in a radial direction | Takehiko Hamaguchi, Atsushi Nakamura, Yasutaka Nishida, Hisashi Takano, Yohji Maruyama +2 more | 2006-06-06 |
| 6980385 | Apparatus for information recording and reproducing | Takatoshi Kato, Takushi Nishiya, Hideyuki Yamakawa, Takashi Nara, Nobuaki Nakai +2 more | 2005-12-27 |
| 6937449 | Spin-valve head containing closed-flux-structure domain control films | Hiroyuki Hoshiya, Masahiko Hatatani, Hisashi Kimura | 2005-08-30 |
| 6934128 | Magnetic head and magnetic disk drive | Yuko Tsuchiya, Hiroyuki Hoshiya, Yoshiaki Kawato, Katsuro Watanabe | 2005-08-23 |
| 6795277 | Magnetic head and magnetic disk drive | Yuko Tsuchiya, Hiroyuki Hoshiya, Yoshiaki Kawato, Katsuro Watanabe | 2004-09-21 |
| 6791776 | Apparatus for information recording and reproducing | Takatoshi Kato, Takushi Nishiya, Hideyuki Yamakawa, Takashi Nara, Nobuaki Nakai +2 more | 2004-09-14 |
| 6683823 | Method for reproducing information on a recording medium | Hideki Saga, Hiroaki Nemoto, Hirofumi Sukeda, Masahiko Takahashi, Kimio Nakamura +2 more | 2004-01-27 |
| 6657805 | Method of controlling read write operation of a magnetic disk apparatus | Yasutaka Nishida, Takehiko Hamaguchi, Hisashi Takano, Hideki Sawaguchi, Futoshi Tomiyama | 2003-12-02 |
| 6560168 | Information recording/reproducing device | Hideki Saga, Hiroaki Nemoto, Hirofumi Sukeda, Masahiko Takahashi, Kimio Nakamura +2 more | 2003-05-06 |
| 6493297 | Multibeam optical disk record and reproduction apparatus and method | Soichi Isono, Satoshi Kawamura, Kiyoshi Honda, Toshimitsu Kaku, Hitoshi Komatsu +3 more | 2002-12-10 |
| 6373407 | Data encoding method for digital data recording and data recording system using the same | Takushi Nishiya, Tatsuya Hirai, Seiichi Mita, Takashi Nara, Yoichi Uehara +2 more | 2002-04-16 |
| 6327112 | Adjacent track position detectable information storage apparatus | Futoshi Tomiyama, Yasutaka Nishida, Takehiko Hamaguchi, Hisashi Takano, Yohji Maruyama +2 more | 2001-12-04 |
| 6310741 | Magnetic disk apparatus with data track reassigning function | Yasutaka Nishida, Takehiko Hamaguchi, Hisashi Takano, Hideki Sawaguchi, Futoshi Tomiyama | 2001-10-30 |
| 6251986 | Paint resin emulsion having weatherability | Motoyuki Takagi | 2001-06-26 |