Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5136171 | Charge neutralization apparatus for ion implantation system | Ka-Ngo Leung, Wulf B. Kunkel, Charles M. McKenna | 1992-08-04 |
| 4795940 | Large area directly heated lanthanum hexaboride cathode structure having predetermined emission profile | Ka-Ngo Leung, Keith C. Gordon, Dean O. Kippenham, Peter Purgalis, David MOUSSA +2 more | 1989-01-03 |