Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875967 | Method for growing a single crystal of cubic boron nitride semiconductor and method for forming a p-n junction thereof, and light emitting element | Osamu Mishima, Shinobu Yamaoka, Osamu Fukunaga, Koh Era | 1989-10-24 |
| 4804812 | Microwave oven with combined rotary heater and wave guide plate | Yasuyuki Motozuka | 1989-02-14 |
| 4801828 | Multiphase solid-state contactor | Masahide Ishikawa, Kazuo Sakurai, Tomio Shimizu | 1989-01-31 |