Issued Patents All Time
Showing 51–68 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE36850 | Projection-type display apparatus | Tadaaki Nakayama, Akitaka Yajima | 2000-09-05 |
| 6109751 | Projector and lighting optical system therefor | Toshiaki Hashizume | 2000-08-29 |
| 6109752 | Lighting device and projector | Toshiaki Hashizume | 2000-08-29 |
| 6111490 | Superconducting magnet apparatus and method for magnetizing superconductor | Yousuke Yanagi, Tetsuo Oka, Masaaki Yoshikawa | 2000-08-29 |
| 6108132 | Polarized light separating/combining optical element, polarized light illuminating apparatus and projection-type display device | — | 2000-08-22 |
| 6101040 | Illumination optical system and projection-type display apparatus | — | 2000-08-08 |
| 6042234 | Polarized light illumination device and projection display device | — | 2000-03-28 |
| 6036318 | Projection display | — | 2000-03-14 |
| 5986809 | Polarization conversion element, polarization illuminator, display using the same illuminator, and projection type display | Toshiaki Hashizume | 1999-11-16 |
| 5981442 | Neodymium-barium-copper-oxide bulk superconductor and process for producing the same | Yousuke Yanagi, Takeo Yamazaki, Atsushi Takagi, Yuh Yamada, Uichiro Mizutani +2 more | 1999-11-09 |
| 5973840 | Projection display and illuminating optical system for it | Toshiaki Hashizume | 1999-10-26 |
| 5626409 | Projection-type display apparatus | Tadaaki Nakayama, Akitaka Yajima | 1997-05-06 |
| 5440424 | Prism optical device and polarizing optical device | Jin-Jei Wu, Shoichi Uchiyama, Tomio Sonehara | 1995-08-08 |
| 4970487 | Pressure sensor | Makoto Tsukahara, Yukihiro Kato, Tetsuo Oka | 1990-11-13 |
| 4680046 | Method of preparing preforms for optical fibers | Nobutaka Matsuo, Masanobu Motoki, Sadao Kanbe, Haruo Osafune | 1987-07-14 |
| 4680048 | Method of preparing doped silica glass | Masanobu Motoki, Nobutaka Matsuo, Sadao Kanbe, Haruo Osafune | 1987-07-14 |
| 4622056 | Method of preparing silica glass | Nobutaka Matsuo, Sadao Kanbe, Haruo Osafune, Masanobu Motoki | 1986-11-11 |
| 4197623 | Factory barge for manufacturing reinforced elongated concrete products | Toshimasa Suzuki, Chiaki Matsuyama, Susumu Ogawa, Yasuo Usui | 1980-04-15 |