Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839708 | Electromechanical semiconductor transducer | Yuji Yagi, Hiroyuki Sakaki | 1989-06-13 |
| 4835603 | Color image reproduction apparatus and a composite light filter and ink ribbon for use therein | Matsusaburo Noguchi, Joji Tadokoro | 1989-05-30 |
| 4816878 | Negative resistance semiconductor device | Masafumi Hashimoto, Nobuhiko Sawaki | 1989-03-28 |