Robert E. Ellefson

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Manlius, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Replaceable anode liner for ion source
- Patent number 7,041,984
- Issue date May 9, 2006
- Inficon, Inc.
- Robert E. Ellefson
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Apparatus for measuring total pressure and partial pressure with co...
- Patent number 6,642,641
- Issue date Nov 4, 2003
- Inficon, Inc.
- Robert E. Ellefson
- G01 - MEASURING TESTING
Information Patent Grant
Method for linearization of ion currents in a quadrupole mass analyzer
- Patent number RE38138
- Issue date Jun 10, 2003
- Leybold Inficon, Inc.
- David H. Holkeboer
- 250 - Radiant energy
Information Patent Grant
Louvered beam stop for lowering x-ray limit of a total pressure gauge
- Patent number 6,476,612
- Issue date Nov 5, 2002
- Inficon Inc.
- Robert E. Ellefson
- G01 - MEASURING TESTING
Information Patent Grant
Ion collector assembly
- Patent number 6,091,068
- Issue date Jul 18, 2000
- Leybold Inficon, Inc.
- William E. Parfitt
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for linearization of ion currents in a quadrupole mass analyzer
- Patent number 5,889,281
- Issue date Mar 30, 1999
- Leybold Inficon, Inc.
- David H. Holkeboer
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Replaceable anode liner for ion source
- Publication number 20050258374
- Publication date Nov 24, 2005
- Inficon, Inc.
- Robert E. Ellefson
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Apparatus for measuring total pressure and partial pressure with co...
- Publication number 20020153820
- Publication date Oct 24, 2002
- Inficon Inc.
- Robert E. Ellefson
- G01 - MEASURING TESTING