Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6316873 | Electron emission device and display device using the same | Hiroshi Ito, Kiyohide Ogasawara, Takamasa Yoshikawa, Takashi Chuman, Shingo Iwasaki +4 more | 2001-11-13 |
| 6285123 | Electron emission device with specific island-like regions | Takashi Yamada, Atsushi Yoshizawa, Takuya Hata, Shingo Iwasaki, Takashi Chuman +4 more | 2001-09-04 |
| 6278230 | Electron emission device and display device using the same | Atsushi Yoshizawa, Kiyohide Ogasawara, Takamasa Yoshikawa, Takashi Chuman, Shingo Iwasaki +4 more | 2001-08-21 |
| 6259198 | Flat panel display apparatus with an array of electron emitting devices | Shuuchi Yanagisawa, Takamasa Yoshikawa, Kazuto Sakemura, Atsushi Yoshizawa, Takashi Chuman +4 more | 2001-07-10 |
| 6184612 | Electron emission device with electron supply layer of hydrogenated amorphous silicon | Kiyohide Ogasawara, Takamasa Yoshikawa, Takashi Chuman, Shingo Iwasaki, Hiroshi Ito +4 more | 2001-02-06 |
| 6166487 | Electron emission device and display device using the same | Takamasa Yoshikawa, Takashi Chuman, Kiyohide Ogasawara, Shingo Iwasaki, Hiroshi Ito | 2000-12-26 |
| 6147443 | Electron emission device and display device using the same | Takamasa Yoshikawa, Takashi Chuman, Shingo Iwasaki, Kiyohide Ogasawara, Hiroshi Ito | 2000-11-14 |
| 6144155 | Electron emission device and display device using the same | Takamasa Yoshikawa, Takashi Chuman, Shingo Iwasaki, Kiyohide Ogasawara, Hiroshi Ito | 2000-11-07 |
| 6130503 | Electron emission device and display using the same | Takamasa Yoshikawa, Takashi Chuman, Kiyohide Ogasawara, Shingo Iwasaki, Hiroshi Ito | 2000-10-10 |
| 6066922 | Electron emission device and display device using the same | Shingo Iwasaki, Kiyohide Ogasawara, Takamasa Yoshikawa, Takashi Chuman, Hiroshi Ito +4 more | 2000-05-23 |
| 5990605 | Electron emission device and display device using the same | Takamasa Yoshikawa, Kiyohide Ogasawara, Hiroshi Ito, Masataka Yamaguchi, Shingo Iwasaki +1 more | 1999-11-23 |
| 5681633 | Magneto optical disc, apparatus for reproducing the same and method of reproducing the same | Nobuaki Onagi, Takamasa Yoshikawa | 1997-10-28 |
| 5627803 | Magneto optical recording medium including a plurality of magnetic layers and a method for reducing thereof | — | 1997-05-06 |
| 5488604 | Magneto-optical disk having zero kerr rotation angle at room temperature | — | 1996-01-30 |
| 5217850 | Optical recording disk and manufacturing method thereof | Seiro Fujii, Satoshi Jinno, Takamasa Yoshikawa, Takahiro Kobayashi, Masataka Yamaguchi +4 more | 1993-06-08 |