Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6267092 | Suction apparatus of multi-cylinder internal combustion engine | Yukihiro Matsumoto, Toshiya Watahiki, Toshiharu Aoshima, Tadanobu Ohmori, Tsutomu Tsukii | 2001-07-31 |
| 6011648 | Optical system having an optical element made of resin | Hiromu Mukai, Tetsuo Kohno, Yasushi Yamamoto, Yutaka Inoue | 2000-01-04 |
| 5861986 | Zoom finder optical system | Katsuto Tanaka | 1999-01-19 |
| 5749008 | Eyepiece | Jun Ishihara | 1998-05-05 |