Issued Patents All Time
Showing 1–25 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6511365 | Lapping machine | Hiroyuki Miyazawa | 2003-01-28 |
| 6129855 | Method of manufacturing magnetic head slider, and guide plate used therefor | Shigetomo Sawada, Yoshinore Watanabe, Tadamasa Takagi, Hisami Izawa | 2000-10-10 |
| 6058100 | Optical recording medium having pit rows | Michinobu Mieda, Junji Hirokane, Akira Takahashi, Kenji Ohta | 2000-05-02 |
| 5907525 | Magneto-optical disk, optical pickup, and magneto-optical disk drive | Kenji Ohta, Akira Takahashi | 1999-05-25 |
| 5740153 | Magneto-optical disk, optical pickup, and magneto-optical disk drive | Kenji Ohta, Akira Takahashi | 1998-04-14 |
| 5724319 | Magneto-optical recording apparatus having transient response correction for magnetic head coil currents | Hiroshi Fuji, Tomoyuki Miyake | 1998-03-03 |
| 5673250 | Optical recording medium having pit rows on every other boundary and reproducing method thereof | Michinobu Mieda, Junji Hirokane, Akira Takahashi, Kenji Ohta | 1997-09-30 |
| 5612840 | Magnetic spring arm assembly including structure for preventing damage to a conductive layer resulting from bending | Sinji Hiraoka, Yoshihisa Matsumoto, Isamu Itoh | 1997-03-18 |
| 5581521 | Device for controlling the motor of a recording and reproducing apparatus | Masaru Nomura, Masaaki HANANO, Takeshi Yamaguchi | 1996-12-03 |
| 5553043 | Information regenerating apparatus | Takeshi Yamaguchi, Hiroshi Fuji, Hiroshige Hirashima | 1996-09-03 |
| 5546364 | Magneto-optical memory apparatus utilizing edges or recording mark to manage data | Hiroshi Fuji, Toshihisa Deguchi, Kunio Kojima, Takeshi Yamaguchi, Akira Takahashi +1 more | 1996-08-13 |
| 5434991 | Method and apparatus for recording and reproducing information in black on a rewritable recording medium | Shigemi Maeda, Kunio Kojima, Kazuaki Okumura | 1995-07-18 |
| 5432768 | Method and device for data management in optical recording medium | Toshihisa Deguchi, Kunio Kojima, Shigemi Maeda | 1995-07-11 |
| 5420838 | Disk recording and reproducing device | Shigemi Maeda, Toshio Ishikawa, Toshihisa Deguchi | 1995-05-30 |
| 5377167 | Recording/reproducing device | Shigemi Maeda | 1994-12-27 |
| 5361247 | Information recording and reproducing device with reproduction and automatic gain control circuit | Hiroshi Fuji, Toshihisa Deguchi, Takeshi Yamaguchi | 1994-11-01 |
| 5331623 | Optical retrieval system for encoding pit angular data and optical recording element therefor | Hirotsugu Matoba, Toshihisa Deguchi, Hideyoshi Yamaoka | 1994-07-19 |
| 5315571 | Information recording and reproducing device providing faster access time to a recording medium | Shigemi Maeda, Kunio Kojima, Jun Akiyama, Tomiyuki Numata | 1994-05-24 |
| 5311490 | Access controlling device for use in an optical disk drive | Hirotsugu Matoba, Masaru Nomura, Takeshi Yamaguchi, Kunio Kojima | 1994-05-10 |
| 5301174 | Optical disk recording and reproducing apparatus | Hirotsugu Matoba, Masaru Nomura, Toshihisa Deguchi | 1994-04-05 |
| 5293280 | Magnetic recording and reproduction apparatus for data processing unit and magnetic tape for use in such apparatus | Toshio Ishikawa, Taizo Sasada | 1994-03-08 |
| 5278814 | Apparatus for recording and reproducing information on and from an optical disk | Toshihisa Deguchi, Hiroshi Fuji | 1994-01-11 |
| 5274617 | Method and device for data management in an optical recording medium | Toshihisa Deguchi, Kunio Kojima, Shigema Maeda | 1993-12-28 |
| 5210733 | Information recording and reproducing device employing variable data recording clock rates | Takeshi Yamaguchi, Takashi Iwaki, Hiroshi Fuji | 1993-05-11 |
| 5200941 | Optical retrieval system for encoding pit angular data and optical recording element thereof | Hirotsugu Matoba, Toshihisa Deguchi, Hideyoshi Yamaoka | 1993-04-06 |