Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4793961 | Method and source for producing a high concentration of positively charged molecular hydrogen or deuterium ions | Ka-Ngo Leung | 1988-12-27 |
| 4760306 | Electron emitting filaments for electron discharge devices | Ka-Ngo Leung, Philip A. Pincosy | 1988-07-26 |
| 4725449 | Method of making radio frequency ion source antenna | Ka-Ngo Leung | 1988-02-16 |
| 4559477 | Three chamber negative ion source | Ka-Ngo Leung, John R. Hiskes | 1985-12-17 |
| 4486665 | Negative ion source | Ka-Ngo Leung | 1984-12-04 |
| 4447732 | Ion source | Ka-Ngo Leung | 1984-05-08 |