Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882619 | High resolution image pickup system with color dispersion means | Akira Hasegawa, Kiyoshi Tsuji, Kimihiko Nishioka, Hiroshi Matsui | 1989-11-21 |
| 4873423 | High temperature heating furnace | — | 1989-10-10 |
| 4867136 | Endoscope apparatus | Akira Suzuki, Takeaki Nakamura, Tatsuya Yamaguchi, Takashi Tsukaya, Tsutomu Yamamoto +19 more | 1989-09-19 |
| 4848899 | Fixation sight apparatus for ophthalmologic instrument | Katsuhiko Kobayashi | 1989-07-18 |
| 4824205 | Apparatus for improving image formed by imaging optical system | Nobuo Yamashita, Hiroshi Matsui | 1989-04-25 |
| 4805005 | Semiconductor device and manufacturing method of the same | Toshiyuki Usagawa, Yasuhiro Shiraki, Yuichi Ono, Norikazu Hashimoto | 1989-02-14 |