Robert E. Ellefson
8Patents
6h-index
12Co-inventors
56Inventor score
Filing activity: Mar 20, 1990 → May 20, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5078919A | Composition containing aerogel substrate loaded with tritium | Chemistry; Metallurgy | 44 | Expired |
| US5122305A | Solid-state radiation-emitting compositions and devices | Physics | 15 | Expired |
| US6091068A | Ion collector assembly | Electricity | 13 | Expired |
| US5889281A | Method for linearization of ion currents in a quadrupole mass analyzer | Electricity | 10 | Expired |
| USRE38138E1 | Method for linearization of ion currents in a quadrupole mass analyzer | General | 7 | Expired |
| US7041984B2 | Replaceable anode liner for ion source | Electricity | 6 | Expired |
| US6642641B2 | Apparatus for measuring total pressure and partial pressure with common electron beam | Physics | 3 | Expired |
| US6476612B1 | Louvered beam stop for lowering x-ray limit of a total pressure gauge | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.