Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841349 | Semiconductor photodetector device with light responsive PN junction gate | — | 1989-06-20 |
| 4806769 | Disk exchangeable target mechanism with effective cooling means, for ion implantation system | Haruhisa Mori | 1989-02-21 |