Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9552952 | 12CaO-7Al2O3 electride hollow cathode | John Williams, Rafael A. Martinez | 2017-01-24 |
| 9305733 | 12CaO-7Al2O3 electride hollow cathode | John Williams, Rafael A. Martinez | 2016-04-05 |