Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866004 | Method of forming groove isolation filled with dielectric for semiconductor device | — | 1989-09-12 |
| 4862459 | Test method for detecting faulty memory cell of a programmable device | — | 1989-08-29 |
| 4839854 | Data collection system having stationary unit with electromagnetic induction circuitry for bidirectionally relaying data | Yasuo Sakami, Shigetaka Okina, Junichi Tsubouchi, Shozo Izaki, Hiroyuki Watanabe +1 more | 1989-06-13 |
| 4808550 | Method of producing isolation groove structure | — | 1989-02-28 |
| 4805141 | Bipolar PROM having transistors with reduced base widths | — | 1989-02-14 |