Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7041984 | Replaceable anode liner for ion source | Robert E. Ellefson | 2006-05-09 |
| 6740195 | Detection of nontransient processing anomalies in vacuum manufacturing process | Valentin Rio | 2004-05-25 |
| 6642641 | Apparatus for measuring total pressure and partial pressure with common electron beam | Robert E. Ellefson | 2003-11-04 |
| 6476612 | Louvered beam stop for lowering x-ray limit of a total pressure gauge | Robert E. Ellefson | 2002-11-05 |
| 6468814 | Detection of nontransient processing anomalies in vacuum manufacturing process | Valentin Rio | 2002-10-22 |
| 6091068 | Ion collector assembly | William Parfitt, Timothy L. Karandy, Robert E. Ellefson | 2000-07-18 |
| 5834770 | Ion collecting electrode for total pressure collector | David H. Holkeboer | 1998-11-10 |