Issued Patents All Time
Showing 25 most recent of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11809695 | Image display device and image display method | Keiichi Ono, Kenji Sugiyama, Masafumi Amano | 2023-11-07 |
| 7358934 | Field emission display apparatus with improved white balance | Toshimitsu Watanabe, Masaki Nishikawa, Tetsu Ohishi | 2008-04-15 |
| 7005801 | Projection type cathode ray tube having improved focus characteristics | — | 2006-02-28 |
| 6919675 | Color cathode ray tube | Kenichi Watanabe, Shoji Shirai, Kazunari Noguchi | 2005-07-19 |
| 6624562 | Color cathode ray tube having an improved electron gun | Shoji Shirai | 2003-09-23 |
| 6492766 | Color cathode ray tube with wide deflection angle | Mamoru Tsuzurahara, Kenichi Watanabe, Syouji Shirai, Shinichi Kato, Hirotsugu Sakamoto | 2002-12-10 |
| 6472808 | Color cathode ray tube having electrostatic quadrupole lenses | Shoji Shirai, Shinichi Kato, Koichi Miyagawa | 2002-10-29 |
| 6448704 | Color cathode ray tube having a small neck diameter | Shoji Shirai, Kazuhisa Oshita | 2002-09-10 |
| 6445116 | Color cathode ray tube having an improved electron gun | Shoji Shirai | 2002-09-03 |
| 6411026 | Color cathode ray tube | Syoji Shirai | 2002-06-25 |
| 6400105 | Color cathode-ray tube having electrostatic quadrupole lens exhibiting different intensities for electron beams | Syoji Shirai, Shinichi Kato, Masafumi Nagaoka | 2002-06-04 |
| 6396221 | Color cathode-ray tube | Syoji Shirai, Shinichi Kato, Masafumi Nagaoka | 2002-05-28 |
| 6294866 | Color cathode ray tube having a low-distortion electrostatic quadrupole lens with a plurality of first and second electrodes having specified spacing relationships | Shoji Shirai, Shinichi Kato, Masafumi Nagaoka | 2001-09-25 |
| 6184614 | Color cathode ray tube | Syoji Shirai | 2001-02-06 |
| 6111350 | Color cathode ray tube having an improved electron gun | Shoji Shirai | 2000-08-29 |
| 6097143 | Color cathode ray tube having a small neck diameter | Shoji Shirai, Kazuhisa Oshita | 2000-08-01 |
| 5942844 | Color cathode ray tube having a small neck diameter | Tomoki Nakamura, Shoji Shirai, Shinichi Kato, Kenichi Watanabe, Mamoru Tsuzurahara | 1999-08-24 |
| 5926823 | Document generic logical information editing apparatus | Yo Okumura, Hisashi Nakatsuyama | 1999-07-20 |
| 5917275 | Color cathode ray tube | Syoji Shirai | 1999-06-29 |
| 5909080 | Color cathode ray tube having a small neck diameter | Shoji Shirai, Kazuhisa Oshita | 1999-06-01 |
| 5909079 | Color cathode ray tube | Syoji Shirai | 1999-06-01 |
| 5861710 | Color cathode ray tube with reduced moire | Shoji Shirai, Kenichi Watanabe | 1999-01-19 |
| 5847502 | Color cathode ray tube having a small neck diameter | Shoji Shirai, Kazuhisa Oshita | 1998-12-08 |
| 5752021 | Document database management apparatus capable of conversion between retrieval formulae for different schemata | Hisashi Nakatsuyama, Yo Okumura | 1998-05-12 |
| 5731657 | Electron gun with cylindrical electrodes arrangement | Syoji Shirai | 1998-03-24 |