Issued Patents All Time
Showing 201–225 of 228 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5914198 | Magneto-optical recording medium having dielectric layers with different indices of refraction | Toshio Niihara, Norio Ohta, Fumiyoshi Kirino | 1999-06-22 |
| 5898663 | Optical recording medium with address information prepit for the same track at opposite boundaries of the same track | Hirofumi Sukeda, Motoyasu Terao, Hiroyuki Minemura, Tetsuo Andou | 1999-04-27 |
| 5886958 | Information recording apparatus and method for modulated magneto-optical recording medium | Seiji Yonezawa, Norio Ohta, Toshio Niihara, Keiji Kataoka, Masahiko Takahashi +2 more | 1999-03-23 |
| 5886969 | High-density information recording/reproducing method | Takeshi Maeda, Hisataka Sugiyama, Hiroyuki Awano, Keikichi Andoo, Kouichirou Wakabayashi +5 more | 1999-03-23 |
| 5878021 | Information recording medium, information recording method and information recording apparatus | Yasushi Miyauchi, Motoyasu Terao, Akemi Hirotsune, Hiroyuki Minemura | 1999-03-02 |
| 5878008 | Optical recording/reproducing method and apparatus for controlling irradiation position of an optical spot | Hiroyuki Minemura, Hisataka Sugiyama | 1999-03-02 |
| 5867455 | Optical method and device for irradiating domains at predetermined positions | Hirofumi Sukeda, Hideki Saga | 1999-02-02 |
| 5835469 | High-density information recording/reproducing method | Takeshi Maeda, Hisataka Sugiyama, Hiroyuki Awano, Keikichi Andoo, Kouichirou Wakabayashi +5 more | 1998-11-10 |
| 5805565 | Optical disk having wobbled information shared between tracks | Hiroyuki Minemura, Hisataka Sugiyama | 1998-09-08 |
| 5784347 | Optical disk device having optical phase compensator | Takeshi Shimano, Hisataka Sugiyama, Mariko Umeda | 1998-07-21 |
| 5761172 | Method of optical reproduction using pulsed light | Hiroyuki Minemura, Hisataka Sugiyama, Tetsuya Fushimi | 1998-06-02 |
| 5737301 | "Laser control for setting average recording power of ""1"" equal to average recording power of ""0""" | Kiyoshi Matsumoto, Hisataka Sugiyama | 1998-04-07 |
| 5726955 | Magneto optical recording medium apparatus and method utilizing light pulse magnetic modulation recording | Seiji Yonezawa, Norio Ohta, Toshio Niihara, Keiji Kataoka, Masahiko Takahashi +2 more | 1998-03-10 |
| 5703867 | Optical recording medium having a dummy area at leading and/or trailing positions of recording area | Yasushi Miyauchi, Motoyasu Terao, Akemi Hirotsune, Hiroyuki Minemura | 1997-12-30 |
| 5654058 | Magneto-optical disk | Fumiyoshi Kirino, Shigenori Okamine, Noriyuki Ogihara, Masahiko Takahashi, Norio Ohta +1 more | 1997-08-05 |
| 5648949 | Method and apparatus for information reproduction at variable reference level | Hisataka Sugiyama, Kiyoshi Matsumoto | 1997-07-15 |
| 5614938 | Three-dimensional recording and reproducing apparatus | Hisataka Sugiyama, Takeshi Maeda, Kiyoshi Matsumoto, Motoyasu Terao, Shigenori Okamine +1 more | 1997-03-25 |
| 5579292 | Magneto-optical data recording apparatus using a sample-servo system for applying heating pulses to record data | Seiji Yonezawa, Norio Ohta, Toshio Niihara, Keiji Kataoka, Masahiko Takahashi +2 more | 1996-11-26 |
| 5473581 | Magneto-optical data recording system continuously irradiating optical pulsers | Seiji Yonezawa, Norio Ohta, Toshio Niihara, Keiji Kataoka, Masahiko Takahashi +2 more | 1995-12-05 |
| 5462811 | Magneto-optical recording media and mangeto-optical device using the media | Makoto Miyamoto, Keikichi Andoo, Toshio Niihara, Masahiro Ojima | 1995-10-31 |
| 5434844 | Magneto-optical recording media and magneto-optical recording device using the same | Toshio Niihara, Keikichi Andoo, Masahiro Ojima | 1995-07-18 |
| 5414451 | Three-dimensional recording and reproducing apparatus | Hisataka Sugiyama, Takeshi Maeda, Kiyoshi Matsumoto, Motoyasu Terao, Shigenori Okamine +1 more | 1995-05-09 |
| 5321672 | Method of an apparatus for magneto-optically recording information by changing the position or shape or controlling the diameter of reversed domains | Yoshio Suzuki, Toshio Niihara, Norio Ohta, Masahiko Takahashi, Fumiyoshi Kirino +1 more | 1994-06-14 |
| 5296995 | Method of magnetically recording and reading data, magnetic recording medium, its production method and magnetic recording apparatus | Seiji Yonezawa, Keiji Kataoka, Hajime Fukke, Tsuneo Terasawa, Keizo Kato +3 more | 1994-03-22 |
| 5270987 | Magneto-optical recording and reproducing method, magneto-optical memory apparatus and magneto-optical recording medium therefor | Toshimitsu Kaku, Shigeru Nakamura, Masahiko Takahashi, Toshio Niihara, Norio Ohta +7 more | 1993-12-14 |