Issued Patents All Time
Showing 76–100 of 113 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5099361 | Projection lens and projection television system using the same | Yoshiharu Yamamoto | 1992-03-24 |
| 4927247 | Objective lens for optical disk system and optical head using the same | Yasuhiro Tanaka, Masaaki Sunohara, Shinichi Tanaka | 1990-05-22 |
| 4842388 | Single optical lense with diffraction limit converging capability and wide field angle | Yasuhiro Tanaka, Yoshitomi Nagaoka | 1989-06-27 |
| 4810076 | Selective shading device and an optical device using the same | Tsugio Murao, Yoshiharu Yamamoto, Kenichi Ikeda, Yoshitomi Nagaoka | 1989-03-07 |
| 4792218 | Projection lens for high definition TV | Yoshiharu Yamamoto, Yoshitomi Nagaoka | 1988-12-20 |
| 4767199 | Projection lens | Yoshiharu Yamamoto, Shusuke Ono | 1988-08-30 |
| 4758535 | Method for producing semiconductor laser | Yasushi Sakakibara, Hirofumi Namizaki | 1988-07-19 |
| 4753200 | Engine combustion control system | Yoshihisa Kawamura | 1988-06-28 |
| 4733953 | Color corrected projection lens | Yoshiharu Yamamoto, Syusuke Ono | 1988-03-29 |
| 4704009 | Projection lens | Yoshiharu Yamamoto, Yoshito Miyatake, Yoshitomi Nagaoka, Syusuke Ono | 1987-11-03 |
| 4690515 | Compact projection lens | Yoshiharu Yamamoto, Yoshito Miyatake, Yoshitomi Nagaoka, Shusuke Ono | 1987-09-01 |
| 4651693 | Swirl control arrangement for internal combustion engine | Tooru Yoshimura, Katsunori Terakasa | 1987-03-24 |
| 4610138 | Exhaust particle removing system for an internal combustion engine | Motohiro Shinzawa | 1986-09-09 |
| 4548480 | Projection lens apparatus | Yoshiharu Yamamoto, Yoshitomi Nagaoka | 1985-10-22 |
| 4545333 | System for controlling coolant temperature of internal combustion engine | Shinichi Nagumo, Yoshio Toda, Yoshifumi Hase | 1985-10-08 |
| 4497300 | Fuel supply system for an internal combustion engine | Kimiomi Maruyama | 1985-02-05 |
| 4495930 | Fuel control system | — | 1985-01-29 |
| 4475739 | Piston ring assembly for automotive internal combustion engine | Shinichi Nagumo, Yoshifumi Hase, Takaharu Gotoh | 1984-10-09 |
| 4459804 | Multiple spark ignition internal combustion engine with exhaust gas recirculation | Yoshimasa Hayashi, Tooru Yoshimura | 1984-07-17 |
| 4453178 | Projection television apparatus | Yoshito Miyatake, Yoshitomi Nagaoka | 1984-06-05 |
| 4400722 | Optical configuration for projection television apparatus | Yoshito Miyatake, Yoshitomi Nagaoka | 1983-08-23 |
| 4385598 | Engine system | Michio Onoda, Kunihiko Sugihara | 1983-05-31 |
| 4380984 | Electronic controlled carburetor | Tadashi Nagai, Ken Nakamura | 1983-04-26 |
| 4350129 | Spark-ignition internal combustion engine capable of preventing noxious gas emissions | Yoshimasa Hayashi, Shin-ichi Nagumo, Tooru Yoshimura | 1982-09-21 |
| 4333334 | Knocking discrimination apparatus | Kazuhiro Kikuchi | 1982-06-08 |