Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833508 | High electron mobility device with intrinsic AlAs/GaAs superlattice separator region | Tomonori Ishikawa, Shigehiko Sasa | 1989-05-23 |
| 4799088 | High electron mobility single heterojunction semiconductor devices and methods for production thereof | Toshio Fujii | 1989-01-17 |