Issued Patents All Time
Showing 51–75 of 77 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5537167 | Projection type display apparatus | Eiichi Toide, Fusaaki Yamada, Toshihide Kaneko, Kan Kawahara, Shigeru Takeuchi +1 more | 1996-07-16 |
| 5519537 | Retrofocus projection lens | — | 1996-05-21 |
| 5384659 | Condenser lens, polarizing element, light source apparatus, and projection display apparatus | Hiroshi Kida, Akira Daijogo | 1995-01-24 |
| 5321789 | Projection display apparatus, and light guide tube/light valve for use in the same | Hiroshi Kida, Masahiro Usui, Eiichi Toide, Mitsushige Kondo | 1994-06-14 |
| 5285287 | Projecting method for picture display apparatus | — | 1994-02-08 |
| 5264879 | Projection type display apparatus | — | 1993-11-23 |
| 5248518 | Projection cathode ray tube | Eiichi Toide, Mitsushige Kondo | 1993-09-28 |
| 5216649 | Optical head with a tilt correction servo mechanism | Manabu Koike, Eiichi Toide, Toru Yoshihara, Takashi Saito | 1993-06-01 |
| 5142387 | Projection-type display device having light source means including a first and second concave mirrors | Masahiro Usui, Eiichi Toide, Hiroshi Kida, Mitsushige Kondo | 1992-08-25 |
| 5138222 | Projection cathode ray tube having an interference filter | Eiichi Toide, Mitsushige Kondo | 1992-08-11 |
| 5135300 | Projection color display apparatus | Eiichi Toide, Mitsushige Kondo, Hiroshi Kida, Masahiro Usui | 1992-08-04 |
| 5123729 | Projection display device | Mitsushige Kondo, Eiichi Toide, Hiroshi Kida, Masahiro Usui | 1992-06-23 |
| 5066138 | Optical head apparatus | Eiichi Toide, Masayuki Kubota | 1991-11-19 |
| 4987566 | Optical head apparatus | Eiichi Toide, Mitsushige Kondou, Kazuo Iwata | 1991-01-22 |
| 4983002 | Optical head device | Eiichi Toide | 1991-01-08 |
| 4888760 | Optical head apparatus | Eiichi Toide, Mitsushige Kondou, Kazuo Iwata | 1989-12-19 |
| 4835761 | Signal to noise ratio of optical head apparatus employing semiconductor laser beam source | Eiichi Toide | 1989-05-30 |
| 4823335 | Optical head device having deflection means including means for reducing reflected light angle | Mitsushige Kondo, Eiichi Tiode | 1989-04-18 |
| 4817072 | Optical head utilizing diffraction grating | Eiichi Toide, Mitsushige Kondo | 1989-03-28 |
| 4811329 | Optical head with laser having particular source of driving current | Eiichi Toide, Mitsushige Kondo | 1989-03-07 |
| 4797545 | Optical head device having positionally adjustable parts | Mitsushige Kondo, Eiichi Toide | 1989-01-10 |
| 4789978 | System and method of astigmatism correction in an optical head apparatus | Eiichi Toide | 1988-12-06 |
| 4753513 | Optical type head device | — | 1988-06-28 |
| 4718052 | Head assembly for optical disc | Mitsushige Kondo, Keizo Kono, Teruo Fujita | 1988-01-05 |
| 4672187 | Focusing error detecting device in head assembly for optical disc | Teruo Fujita, Keizo Kono, Mitsushige Kondo | 1987-06-09 |