Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10886094 | Electron tube | — | 2021-01-05 |
| 9318296 | Magnetron | Timothy Peter Fox, Scott Williams | 2016-04-19 |
| 8810132 | Magnetron | Robert Richardson | 2014-08-19 |
| 7221558 | Galvanically isolated delivery of power to high voltage circuits parts | Stephen Mark Iskander, Robert Richardson | 2007-05-22 |
| 4810925 | Directly heated cathodes | — | 1989-03-07 |