Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7590159 | Surface-emission laser diode operable in the wavelength band of 1.1-1.7 micrometers and optical telecommunication system using such a laser diode | Naoto Jikutani, Shunichi Sato, Takashi Takahashi, Akihiro Itoh, Takuro Sekiya +9 more | 2009-09-15 |
| 7413788 | Write-once-read-many optical recording media and process for recording and reproducing information on the media | Noboru Sasa, Yoshitaka Hayashi, Hirotaka Komoda, Kawori Tanaka, Toshishige Fujii +1 more | 2008-08-19 |
| 7245647 | Surface-emission laser diode operable in the wavelength band of 1.1-1.7mum and optical telecommunication system using such a laser diode | Naoto Jikutani, Shunichi Sato, Takashi Takahashi, Akihiro Itoh, Takuro Sekiya +9 more | 2007-07-17 |
| 6975663 | Surface-emission laser diode operable in the wavelength band of 1.1-7μm and optical telecommunication system using such a laser diode | Takuro Sekiya, Akira Sakurai, Masayoshi Katoh, Teruyuki Furuta, Kazuya Miyagaki +9 more | 2005-12-13 |
| 6933032 | Write-once-read-many optical recording media and process for recording and reproducing information on the media | Noboru Sasa, Yoshitaka Hayashi, Hirotaka Komoda, Kawori Tanaka, Toshishige Fujii +1 more | 2005-08-23 |
| 5736265 | Magneto-optical recording medium and recording method using the same | Motoharu Tanaka, Toshiaki Tokita | 1998-04-07 |
| 5487046 | Magneto-optical recording medium having two magnetic layers with the same curie temperature | Toshiaki Tokita, Motoharu Tanaka | 1996-01-23 |
| 5459701 | Magneto-optical recording method | Toshiaki Tokita, Motoharu Tanaka, Yoshiko Kurosawa | 1995-10-17 |
| 5430696 | Magneto-optical recording medium | Toshiaki Tokita, Motoharu Tanaka | 1995-07-04 |
| 5420833 | Magneto-optical recording medium having first and second magnetic layers | Motoharu Tanaka, Masaetsu Takahashi, Hiroshi Deguchi, Toshiaki Tokita, Yoshiko Kurosawa | 1995-05-30 |
| 5369629 | Magneto-optical recording method and magneto-optical recording medium | Toshiaki Tokita, Motoharu Tanaka | 1994-11-29 |
| 5337293 | Magneto-optical recording method and recording medium for use in the same | Toshiaki Tokita, Motoharu Tanaka | 1994-08-09 |
| 5323366 | Magneto-optical recording method with switching and maintaining perpendicular magnetization light beam application modes | Toshiaki Tokita, Motoharu Tanaka | 1994-06-21 |
| 4797331 | Magneto-optical recording material | Fumiya Ohmi | 1989-01-10 |
| 4788095 | Metal oxide magnetic substance and a magnetic film consisting thereof and their uses | Hazime Machida, Hitoshi Nakamura, Fumiya Omi, Yuziro Kaneko | 1988-11-29 |
| 4690861 | Magneto optical recording medium | Hitoshi Nakamura, Yujiro Kaneko, Yasuo Sawada, Hajime Machida, Fumiya Omi | 1987-09-01 |
| 4670322 | Metal oxide magnetic substance and a magnetic film consisting thereof and their uses | Hitoshi Nakamura, Hazime Machida, Motoharu Tanaka, Fumiya Omi, Nobuyuki Koinuma | 1987-06-02 |
| 4670323 | Magneto-optic recording medium having a metal oxide recording layer | Hitoshi Nakamura, Hazime Machida, Motoharu Tanaka, Fumiya Omi, Nobuyuki Koinuma | 1987-06-02 |