David H. Holkeboer

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Liverpool, NY, US

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Patents Grantslast 30 patents

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
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
Information Patent Grant
Method of manufacturing a miniature quadrupole using electrode-disc...
- Patent number 5,852,270
- Issue date Dec 22, 1998
- Leybold Inficon Inc.
- David H. Holkeboer
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Ion lens assembly for gas analysis system
- Patent number 5,850,084
- Issue date Dec 15, 1998
- Leybold Inficon Inc.
- David H. Holkeboer
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Ion collecting electrode for total pressure collector
- Patent number 5,834,770
- Issue date Nov 10, 1998
- Leybold Inficon, Inc.
- David H. Holkeboer
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dual ion source
- Patent number 5,808,308
- Issue date Sep 15, 1998
- Leybold Inficon Inc.
- David H. Holkeboer
- H01 - BASIC ELECTRIC ELEMENTS