Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6686577 | Device detecting focus of a taking lens without decrease in focus detection accuracy when the auto focus area is disposed at an inclination relative to the photographic field | Hiroshi Ueda, Iwao Ishida, Masataka Hamada | 2004-02-03 |
| 6369854 | Distance detecting device for an optical system | Iwao Ishida | 2002-04-09 |
| 6072956 | Focus detector | Masataka Hamada, Hideo Kajita | 2000-06-06 |
| 5825016 | Focus detection device and accompanying optical equipment | Junko Nagahata, Hiroshi Ueda, Tsuyoshi Kishimoto, Tatsuo Nakashima | 1998-10-20 |
| 5597999 | Auto focus detecting device comprising both phase-difference detecting and contrast detecting methods | Masataka Hamada, Hiroshi Ueda, Kazumi Sugitani, Hiroshi Ootsuka | 1997-01-28 |