Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8873183 | Disk drive and method of writing servo write tracks to a disk | Kei Yasuna, Tomoo Ozaki, Takao Horiguchi | 2014-10-28 |
| 8159773 | Method and apparatus for forming servo patterns on a magnetic-recording disk | Xuchu Zhu, Tomoo Ozaki, Wee Hei | 2012-04-17 |
| 8023220 | Method for writing servo data to a disk and disk drive configured to write servo data utilizing the method | Masaki Yoshioka, Kei Yasuna, Ryohheita Hattori | 2011-09-20 |
| 7620740 | Storage devices and method of transferring file between the devices | Kohji Takasaki, Minoru Hashimoto, Kenji Okada, Hiroshi Oshikawa, Yasuhiro Kotani +2 more | 2009-11-17 |
| 7584070 | Testing/adjusting method and test control apparatus for rotating disk storage devices | Yasuhiro Kotani, Hiroaki Suzuki | 2009-09-01 |
| 7486467 | Magnetic disk drive and method for registering defective sector using timing control of pattern writing | Fuminori Sai, Kohji Takasaki, Hiroshi Yanagisawa | 2009-02-03 |
| 7426088 | Magnetic disk drive with function assignment and manufacturing method therefor | Minoru Hashimoto, Kenji Okada, Keishi Takahashi | 2008-09-16 |
| 7373477 | Fragmentation executing method and storage device | Minoru Hashimoto, Toshiroh Unoki, Toru Aida, Mariko Kado | 2008-05-13 |
| 7149160 | Recording and playing back device with error correction | Akira Kibashi, Keiji Kobayashi | 2006-12-12 |
| 6490115 | Error recovery in unit using GMR sensor | Hiroaki Suzuki, Koji Kurachi, Katsumi Suda, Hideo Asano, Kenji Okada +5 more | 2002-12-03 |
| 6194856 | Motor driving apparatus including a modularized current control circuit and method of controlling the same | Sumio Kobayashi, Hisakazu Ninomiya | 2001-02-27 |
| 6147470 | Device for controlling induction motor and method of controlling the same | Hironori Ohashi, Hiroyuki Tomita, Seiji Ishida | 2000-11-14 |
| 6029022 | Image forming apparatus | — | 2000-02-22 |
| 5970296 | Image forming apparatus | — | 1999-10-19 |
| 5966560 | Image forming apparatus with enhanced pretransfer erasing | Hideaki Kodama, Yasuhiro Ohno, Kazuomi Sakatani | 1999-10-12 |
| 5491541 | Developing apparatus having adjacent similar magnetic poles | Tomoaki Yokoyama | 1996-02-13 |
| 5442425 | Developing apparatus | Tomoaki Yokoyama | 1995-08-15 |