Issued Patents All Time
Showing 25 most recent of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7496773 | Data recording/reproducing system using optical disk apparatus | Shinji Umehara, Ryotaro Hongo, Takayuki Honda, Teruyoshi Nakahashi | 2009-02-24 |
| 6801381 | Magnetic disk apparatus | Hiroshi Iwai, Takeshi Suzuki | 2004-10-05 |
| 6483656 | Pilot lamp current consumption reduction system for a flexible magnetic disk drive or the like | Masakatsu Sakai, Takayuki Honda | 2002-11-19 |
| 6469858 | Motor current consumption control system for a flexible magnetic disk drive or the like | — | 2002-10-22 |
| 6289397 | Disk drive or like peripheral storage device adapted for firmware upgrading, self-testing, etc. | Tsuyoshi Osawa, Satoshi Nakamura, Sadao Yabuki | 2001-09-11 |
| D443867 | Magnetic disc recording/reproducing apparatus with semiconductor memory card recording/reproducing device | Tsuyoshi Osawa, Kunihiko Murao | 2001-06-19 |
| 6173363 | Data transmission device for reading data from a memory medium and transmitting the data to a magnetic reproducing apparatus with a reduced noise | — | 2001-01-09 |
| D434023 | Magnetic disc recording/reproducing apparatus with semiconductor memory card recording/reproducing device | Tsuyoshi Osawa, Kunihiko Murao | 2000-11-21 |
| 5862113 | Method and apparatus for wobble-free data recovery from CD-rom or the like | Mitsumasa Kubo | 1999-01-19 |
| 5552945 | Transducer recalibration system and method for a rotating disk data storage | Tohru Miura | 1996-09-03 |
| 5550447 | Pulse generating system responding to instruction pulses for generating driving pulses for diving motor | Naoki Sugeta | 1996-08-27 |
| 5442608 | Disk apparatus having a power consumption reducing mechanism | Yoshiaki Umeda, Teruo Furukawa, Masaharu Ogawa, Kazuhiko Nakane, Akira Mashimo +4 more | 1995-08-15 |
| 5434724 | Method and apparatus for the high speed driving of a stepper motor against seek error upon power restoration in a microcomputer system | Makoto Shoji, Tohru Miura | 1995-07-18 |
| 5425014 | Apparatus for constant angular velocity reading of constant linear velocity disks | Sho Sugiyama, Shinichi Fujisawa | 1995-06-13 |
| 5408369 | Power saving system for rotating disk data storage apparatus | Tohru Miura | 1995-04-18 |
| 5357384 | Rotating disk data storage apparatus capable of preventing head travel when the disk is not loaded | Shinichiro Tanaka, Tohru Miura, Miya Enami, Hikaru Tamada, Yoshiaki Sakai | 1994-10-18 |
| 5345343 | Power saving system for file protect and disk capacity sensors in rotating disk data storage apparatus | Tohru Miura | 1994-09-06 |
| 5329510 | Method and apparatus for discriminating between unformatted magnetic disk assemblies of two different storage capacities | Shinichi Aikawa, Fumio Nagase | 1994-07-12 |
| 5309628 | Assembling position adjusting mechanism of a spindle motor for a magnetic disk apparatus | Kiyoshi Fukuchi, Yoshiaki Sakai, Takashi NUMATA, Fumio Nagase | 1994-05-10 |
| 5309296 | System for eliminating noise arising from difference in polarity of magnetization by tunnel erase heads | Fumio Nagase, Tohru Miura | 1994-05-03 |
| 5303223 | Head carriage apparatus moved by a lead-screw shaft including resilient means for pressing the lead-screw shaft in a slanting direction toward the head carriage | Takahiro Sakaguchi, Daihachiro Takasu, Yasuhiko Ando, Kazuo Yokota | 1994-04-12 |
| 5303107 | System for holding a track counter active despite power suspension in rotating disk data storage apparatus | Tohru Miura, Fumio Nagase, Miya Enami | 1994-04-12 |
| 5293625 | Signal selecting circuit which selectively outputs predetermined signal to host computer compatible with plurality of computer hardware types and disk drive having such signal selecting circuit | Tohru Miura, Shozo Touma | 1994-03-08 |
| 5293601 | Floppy disk control unit and apparatus having a floppy disk control unit | Shinichiro Tanaka, Fumio Nagase, Naoki Sugeta, Miya Enami, Tohru Miura +1 more | 1994-03-08 |
| 5283702 | Power saving system for rotating disk data storage apparatus | Yoshio Hirose, Kazuhiko Inoue, Tohru Miura, Miya Enami | 1994-02-01 |