Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7041984 | Replaceable anode liner for ion source | Louis C. Frees | 2006-05-09 |
| 6642641 | Apparatus for measuring total pressure and partial pressure with common electron beam | Louis C. Frees | 2003-11-04 |
| RE38138 | Method for linearization of ion currents in a quadrupole mass analyzer | David H. Holkeboer | 2003-06-10 |
| 6476612 | Louvered beam stop for lowering x-ray limit of a total pressure gauge | Louis C. Frees | 2002-11-05 |
| 6091068 | Ion collector assembly | William Parfitt, Timothy L. Karandy, Louis C. Frees | 2000-07-18 |
| 5889281 | Method for linearization of ion currents in a quadrupole mass analyzer | David H. Holkeboer | 1999-03-30 |
| 5122305 | Solid-state radiation-emitting compositions and devices | Carol S. Ashley, C. Jeffrey Brinker, Scott T. Reed, Timothy J. Shepodd, Leroy E. Leonard +3 more | 1992-06-16 |
| 5078919 | Composition containing aerogel substrate loaded with tritium | Carol S. Ashley, C. Jeffrey Brinker, John T. Gill, Scott T. Reed, Robert J. Walko | 1992-01-07 |