Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831248 | Electron beam controlled bulk semiconductor switch with cathodoluminescent electron activation | Karl H. Schoenbach, Vishnukumar K. Lakdawala, Klemens Schmitt | 1989-05-16 |
| 4825061 | Optically controlled bulk semiconductor switch not requiring radiation to sustain conduction | Karl H. Schoenbach, Vishnukumar K. Lakdawala, Sacharia Albin | 1989-04-25 |