Issued Patents All Time
Showing 26–50 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6912989 | Fuel injection control device for a direct fuel injection engine | Akira Tayama, Toshikazu Shiino, Taisuke Shiraishi, Koji Hiraya | 2005-07-05 |
| 6870692 | Wide angle lens system | — | 2005-03-22 |
| 6845610 | Exhaust gas purification apparatus and method | Toshikazu Shiino, Takashi Aoyama, Isamu Hotta | 2005-01-25 |
| 6831791 | Optical system for optical communications and method of manufacturing the same | Mitsuru Namiki | 2004-12-14 |
| 6814046 | Direct fuel injection engine | Koji Hiraya, Eiji Takahashi, Isamu Hotta, Akihiko Kakuho | 2004-11-09 |
| 6559439 | Image taking lens unit with frame member for positioning lens and substrate | Yasuo Nakajoh | 2003-05-06 |
| 6516612 | Exhaust gas purification device for an engine and A/F ratio control for early activating a NOx trapping catalyst | Tarou Yokoi, Keiji Okada, Kouji Ishihara | 2003-02-11 |
| 6497846 | Exhaust gas purifying system for internal combustion engine | Keiji Okada, Kazuhiko Kanetoshi, Akira Tayama | 2002-12-24 |
| 6477833 | Engine exhaust emission control | Akira Tayama, Toshikazu Shiino, Kaname Naganuma | 2002-11-12 |
| 6381954 | Air/fuel ratio control system of internal combustion engine | Masatomo Kakuyama, Akira Tayama, Osamu Matsuno | 2002-05-07 |
| 6362925 | Lens group zoom lens system, and display device having phototaking function | Tohru Nakamura | 2002-03-26 |
| 6359738 | Two-group zoom lens system and display device having phototaking function | Tohru Nakamura | 2002-03-19 |
| 6327096 | Set of lens system | — | 2001-12-04 |
| 6314724 | Air-fuel ratio controller and method of controlling air-fuel ratio | Masatomo Kakuyama, Akira Tayama, Shigeaki Kakizaki | 2001-11-13 |
| 6289673 | Air-fuel ratio control for exhaust gas purification of engine | Akira Tayama, Kazuhiko Kanetoshi, Keiji Okada | 2001-09-18 |
| 6282889 | Air/fuel ration control system of internal combustion engine | Masatomo Kakuyama, Akira Tayama, Osamu Matsuno | 2001-09-04 |
| 6220017 | Exhaust emission control system for internal combustion engine | Akira Tayama, Toshikazu Shiino, Keiji Okada | 2001-04-24 |
| 6163411 | Lens system and image pickup apparatus | — | 2000-12-19 |
| 6130787 | Optical system and optical module | — | 2000-10-10 |
| 6104545 | Gradient index lens component and image pickup apparatus using the gradient index lens | — | 2000-08-15 |
| 6070567 | Individual cylinder combustion state detection from engine crankshaft acceleration | Shigeaki Kakizaki, Mikio Matsumoto | 2000-06-06 |
| 6057968 | Eyepiece system | Hirokazu Konishi | 2000-05-02 |
| 5986817 | Eyepiece lens | — | 1999-11-16 |
| 5912770 | Achromatic lens system | — | 1999-06-15 |
| 5870229 | Gradient index lens component and image pickup apparatus using the gradient index lens component | — | 1999-02-09 |