Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691785 | Color projection type display apparatus having three liquid displays of same structure | Masahiro Usui, Hiroshi Kida, Shinsuke Shikama | 1997-11-25 |
| 5570209 | Color projection type display apparatus having three liquid crystal displays of same structure | Masahiro Usui, Hiroshi Kida, Shinsuke Shikama | 1996-10-29 |
| 5321789 | Projection display apparatus, and light guide tube/light valve for use in the same | Hiroshi Kida, Masahiro Usui, Eiichi Toide, Shinsuke Shikama | 1994-06-14 |
| 5248518 | Projection cathode ray tube | Eiichi Toide, Shinsuke Shikama | 1993-09-28 |
| 5142387 | Projection-type display device having light source means including a first and second concave mirrors | Shinsuke Shikama, Masahiro Usui, Eiichi Toide, Hiroshi Kida | 1992-08-25 |
| 5138222 | Projection cathode ray tube having an interference filter | Eiichi Toide, Shinsuke Shikama | 1992-08-11 |
| 5135300 | Projection color display apparatus | Eiichi Toide, Shinsuke Shikama, Hiroshi Kida, Masahiro Usui | 1992-08-04 |
| 5123729 | Projection display device | Shinsuke Shikama, Eiichi Toide, Hiroshi Kida, Masahiro Usui | 1992-06-23 |
| 4823335 | Optical head device having deflection means including means for reducing reflected light angle | Shinsuke Shikama, Eiichi Tiode | 1989-04-18 |
| 4817072 | Optical head utilizing diffraction grating | Eiichi Toide, Shinsuke Shikama | 1989-03-28 |
| 4811329 | Optical head with laser having particular source of driving current | Shinsuke Shikama, Eiichi Toide | 1989-03-07 |
| 4797545 | Optical head device having positionally adjustable parts | Shinsuke Shikama, Eiichi Toide | 1989-01-10 |
| 4718052 | Head assembly for optical disc | Shinsuke Shikama, Keizo Kono, Teruo Fujita | 1988-01-05 |
| 4672187 | Focusing error detecting device in head assembly for optical disc | Teruo Fujita, Keizo Kono, Shinsuke Shikama | 1987-06-09 |
| 4502134 | Optical disc signal reproducing system with tilt immunization | Kazuo Okada, Kazuo Hirasawa | 1985-02-26 |
| 4363961 | Automatic focusing apparatus | Kazuo Okada | 1982-12-14 |