Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6490123 | Disc drive having 3.5 inch form factor housing and 2.5 inch form factor disk media | Nobuyuki Okunaga, Masao Iwakura, Takuji Ogawa, Chuma Akira, Fumio Kugiya +5 more | 2002-12-03 |
| 5671107 | Large capacity magnetic disc apparatus with a particular relationship between pole thickness, saturated flux density, and recording wavelength | Katsuya Mitsuoka, Hiroshi Fukui, Makoto Aihara, Masanori Tanabe, Moriaki Fuyama +8 more | 1997-09-23 |
| 5606529 | Semiconductor disk storage | Hisao Honma, Naoya Takahashi, Makoto Kogai, Kenichi Takamoto | 1997-02-25 |
| 5606706 | Data storing system and data transfer method | Ken-ichi Takamoto, Naoya Takahashi, Makoto Kogai, Minoru Yoshida | 1997-02-25 |
| 5603062 | System for controlling data flow between plurality of host interfaces and drive interfaces using controller for select unoccupied interfaces after preparation of read/write operation is complete | Masahiko Sato, Naoya Takahashi, Akira Chuma, Yoshio Yukawa | 1997-02-11 |
| 5546348 | Semiconductor disc storage | Hisao Honma, Naoya Takahashi, Makoto Kogai, Kenichi Takamoto | 1996-08-13 |
| 5469311 | Vibration absorbing structure for a magnetic disk apparatus | Hiroshi Nishida, Kenjiro Kai, Katsumoto Onoyama | 1995-11-21 |
| 5392445 | Data storing system and data transfer method with a plurality of disk units | Ken-ichi Takamoto, Naoya Takahashi, Makoto Kogai, Minoru Yoshida | 1995-02-21 |
| 5245493 | Magnetic information storage apparatus including magnetic head and method for making magnetic head | Takashi Kawabe, Moriaki Fuyama, Shinji Narishige, Eizi Ashida, Makoto Morijiri +8 more | 1993-09-14 |
| 5243479 | Mounting structure for information recording and reproducing apparatus | Akira Chuma, Kazuhisa Shiraishi, Masafumi Nozawa, Yoshihiro Moribe, Hideo Maekawa | 1993-09-07 |
| D335285 | Magnetic disc storage unit for electronic computer | Toshiyuki Utsuki, Syoji Umemoto, Tatsuo Murai, Naoyuki Fukada, Takeo Hayakawa | 1993-05-04 |
| 5206772 | Magnetic disk apparatus having improved arrangement of head disk assemblies | Yoshiyuki Hirano, Tsuyoshi Takahashi, Jun Naruse | 1993-04-27 |
| 5173819 | Disk apparatus having an improved cooling structure | Tsuyoshi Takahashi, Jun Naruse, Takuji Ogawa, Takeo Hayakawa | 1992-12-22 |
| 4881136 | Method and apparatus for detecting minute defects on magnetic disk by monitoring both amplitude decrease and phase shift of a reproduced signal | Kazuhisa Shiraishi, Takuji Ogawa | 1989-11-14 |
| 4779146 | Apparatus for and method of writing/reading data into/from a flexible disk | Akira Chuma, Yoshihiro Moribe, Noriaki Miniamide | 1988-10-18 |
| 4736263 | Method and apparatus for driving a disk | Mikio Takahashi, Yasuo Yamamoto, Yoshihiro Moribe, Akira Chuma, Nobukuni Ohkubo | 1988-04-05 |
| 4727439 | Magnetic disc unit system | Toshiyuki Haruna, Motohiro Nakai, Asao Sasamoto, Hideaki Amano | 1988-02-23 |
| 4604663 | Floppy disk driver | Yoshihiro Moribe, Nobukuni Ohkubo, Mikio Takahashi | 1986-08-05 |
| 4591939 | Waveform equivalent circuit | Masashi Sakuma, Kazuhisa Shiraishi, Shoji Ozaki | 1986-05-27 |
| 4241366 | Magnetic head loading apparatus | Hiroshi Nishida, Jun Naruse, Kunihiro Motoyoshi | 1980-12-23 |