Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7583171 | Magnetic field generator, photomagnetic information storing system, and photomagnetic information storing apparatus | Tsuyoshi Matsumoto, Hiroyasu Yoshikawa | 2009-09-01 |
| 7475411 | Cleaner utilizing adhesive member, and optical information processing device incorporating the same | Kiyoto Matsui | 2009-01-06 |
| 7365931 | Information-recording/reproducing apparatus and method of detecting the gap between a head and a recording medium | Yoshiaki Ikai, Atsuo Iida, Takahiro Imamura, Toru Yokohata | 2008-04-29 |
| 7127729 | Magneto-optical head and magneto-optical disk drive | Goro Kawasaki, Tsuyoshi Matsumoto, Hiroyasu Yoshikawa, Nobuyuki Kanto, Koichi Tezuka | 2006-10-24 |
| 6977870 | Optical head having light reflection prevention film, and optical information processing apparatus incorporating the same | Tsuyoshi Matsumoto | 2005-12-20 |
| 6898157 | Optical head having a plurality of coil elements connected in parallel to each other | Koji Matsumoto, Koichi Tezuka | 2005-05-24 |
| 6870806 | Magnetic head provided with moment-reducing contact for data storage medium | Tsuyoshi Matsumoto | 2005-03-22 |
| 6760278 | Magnetic head and data recording and reproduction device | Tsuyoshi Matsumoto | 2004-07-06 |
| 6704249 | Magnetic head having an irregular surface for heat dissipation | Hiroyasu Yoshikawa, Goro Kawasaki, Tsuyoshi Matsumoto | 2004-03-09 |
| 6567347 | Optical head having a plurality of coil elements connected in parallel to each other | Koji Matsumoto, Koichi Tezuka | 2003-05-20 |
| 6507543 | Optical disk apparatus and galvano-mirror used for the same | Haruhiko Izumi | 2003-01-14 |
| 6396774 | Information reproducing device, information recording/reproducing head, and information reproducing method utilizing mono-magnetic domain structure | Koji Matsumoto | 2002-05-28 |
| 6339564 | Optical information recording/reproducing apparatus | Koichi Tezuka, Kyoko Miyabe, Satoshi Itami, Kazushi Uno | 2002-01-15 |
| 6185166 | Optical information recording/reproducing apparatus | Koichi Tezuka, Kyoko Miyabe, Satoshi Itami, Kazushi Uno | 2001-02-06 |
| 5793725 | Optical information recording/reproducing apparatus having a composite prism with a plurality of emission surfaces | Koichi Tezuka, Kyoko Miyabe, Satoshi Itami | 1998-08-11 |
| 5623462 | Optical information recording/reproducing apparatus | Koichi Tezuka, Kyoko Miyabe, Satoshi Itami | 1997-04-22 |
| 5440533 | Optical head unit having disk-shaped rotor with generally planar and common mounting surface for optical elements | Akio Futamata, Yasuyuki Ozawa | 1995-08-08 |