Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873010 | Spindle-like magnetic iron oxide particles and process for producing the same | Atsushi Takedoi, Masaru Isoai, Yoshitaka Yoshinaga, Tosiharu Harada, Yosiro Okuda +3 more | 1989-10-10 |
| 4871331 | Bulb socket for wedged-base bulb | Tadashi Harada, Kihachiro Uchida | 1989-10-03 |
| 4856412 | Vacuum operated booster | Satoshi Kawasumi, Yuzuru Sugiura, Akihiko Miwa, Kazuhiko Suzuki | 1989-08-15 |