Issued Patents All Time
Showing 76–77 of 77 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5221641 | Process for making light emitting diodes | Yoshio Kurita, Yuji Sakamoto | 1993-06-22 |
| 4244262 | Echo-machine employing low pass filters with a variable cut-off frequency | — | 1981-01-13 |