Issued Patents All Time
Showing 51–75 of 81 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5955752 | Semiconductor module having antenna element therein | Jun Fukaya, Yasutake Hirachi, Jun-ichi Ishibashi, Toshio Yamamoto | 1999-09-21 |
| 5914915 | Magneto-optical disk system having an objective lens with a numerical aperture related to the thickness of the protective layer | Tetsu Watanabe | 1999-06-22 |
| 5910932 | Optical disk and optical disk system with numerical aperture of objective lens related to protective layer thickness of optical disk | Tetsu Watanabe | 1999-06-08 |
| 5900010 | Apparatus for recording magneto-optic disks | Hideyoshi Horimai | 1999-05-04 |
| 5838646 | Optical disk having a protective layer of specified thickness relative to the numerical aperture of the objective lens | Tetsu Watanabe | 1998-11-17 |
| 5838656 | Optical disk system having an objective lens with a numerical aperture related to the thickness of the protective layer | Tetsu Watanabe | 1998-11-17 |
| 5757733 | Optical disc system having an objective lens with a numerical aperture related to the thickness of the protective layer | Tetsu Watanabe | 1998-05-26 |
| 5617378 | Magneto-optical disc system having an objective lens with a numerical aperture related to the thickness of the protective layer | Tetsu Watanabe | 1997-04-01 |
| 5610880 | Optical disc system and optical disk therefor | Tetsu Watanabe | 1997-03-11 |
| 5587990 | Optical disc system and optical disc therefor | Tetsu Watanabe | 1996-12-24 |
| 5533001 | Magneto-optical disk system with specified thickness for protective layer relative to the numerical aperture of the objective lens | Tetsu Watanabe | 1996-07-02 |
| 5515346 | Magneto-optical disk system with specified thickness for protective layer relative to the numerical apperture of the objective lens | Tetsu Watanabe | 1996-05-07 |
| 5508981 | Magneto-optical disk system with specified thickness for protective layer relative to the numerical aperture of the objective lens | Tetsu Watanabe | 1996-04-16 |
| 5493452 | Lens retaining barrel | Yoshiharu Hoshino | 1996-02-20 |
| 5392263 | Magneto-optical disk system with specified thickness for protective layer on the disk relative to the numerical aperture of the objective lens | Tetsu Watanabe | 1995-02-21 |
| 5287334 | Magneto-optical pickup apparatus and magneto-optical recording/reproducing apparatus | Kietsu Iwabuchi, Koji Sasaki, Tetsu Watanabe, Tamotsu Yamagami | 1994-02-15 |
| 5287072 | Semiconductor device for improving high-frequency characteristics and avoiding chip cracking | Masakazu Kojima, Seigo Sano | 1994-02-15 |
| 5217644 | Mesomorphic compound, liquid crystal composition containing same, liquid crystal device using same and display apparatus | Hiroyuki Nohira, Yoko Yamada, Shinichi Nakamura, Akira Sakaigawa, Yasumasa Tashiro | 1993-06-08 |
| 5185093 | Process for producing magnetic metal powder and coating for magnetic recording medium | Hiroaki Ichikawa, Yasuo Kadono, Katsuo Kojima, Hiroyuki Nakamura | 1993-02-09 |
| 5028278 | Ferromagnetic metal powder and process for preparation thereof | Yasuo Kadono, Masaaki Koga | 1991-07-02 |
| 4959820 | Magnetooptical recording apparatus with constant leakage magnetic and pulse modulated magnetic field | Hideyoshi Horimai | 1990-09-25 |
| 4920010 | Ferromagnetic metal powder | Yasuo Kadono, Masaaki Koga | 1990-04-24 |
| 4907211 | Magneto-optical recording apparatus having an inversion signal detecting means | Hideyoshi Horimai | 1990-03-06 |
| 4771347 | Magneto-optical recording system | Hideyoshi Horimai, Osamu Kawakubo | 1988-09-13 |
| 4749392 | Dehumidifying material | Masatoshi Saito | 1988-06-07 |