Inventor · disambiguated record
Robert E. Ellefson
Also filed as: ELLEFSON ROBERT E
8 granted patents·178 citations·filing 1990–2004
88Inventor score
Top patents by PatentIndex Score
8 records- 0187US5078919AComposition containing aerogel substrate loaded with tritiumUS ENERGY·Filed 1990·Granted Jan 7, 1992·65 cites·15 claims
- 0275US6091068AIon collector assemblyLEYBOLD INFICON INC·Filed 1998·Granted Jul 18, 2000·36 cites·11 claims
- 0374USRE38138EMethod for linearization of ion currents in a quadrupole mass analyzerLEYBOLD INFICON INC·Filed 2000·Granted Jun 10, 2003·10 cites·10 claims
- 0473US7041984B2Replaceable anode liner for ion sourceINFICON INC·Filed 2004·Granted May 9, 2006·11 cites·35 claims
- 0570US5889281AMethod for linearization of ion currents in a quadrupole mass analyzerLEYBOLD INFICON INC·Filed 1997·Granted Mar 30, 1999·21 cites·6 claims
- 0670US5122305ASolid-state radiation-emitting compositions and devicesASHLEY CAROL S·Filed 1990·Granted Jun 16, 1992·28 cites·24 claims
- 0758US6642641B2Apparatus for measuring total pressure and partial pressure with common electron beamINFICON INC·Filed 2001·Granted Nov 4, 2003·4 cites·19 claims
- 0856US6476612B1Louvered beam stop for lowering x-ray limit of a total pressure gaugeINFICON INC·Filed 2001·Granted Nov 5, 2002·3 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →