George E. Yefchak

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Santa Clara, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Methods and apparatus for introducing liquids into microfluidic cha...
- Patent number 6,843,281
- Issue date Jan 18, 2005
- Agilent Techinologies, Inc.
- Phillip W. Barth
- G01 - MEASURING TESTING
Information Patent Grant
Thermal drift compensation to mass calibration in time-of-flight ma...
- Patent number 6,700,118
- Issue date Mar 2, 2004
- Agilent Technologies, Inc.
- George Yefchak
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Pressure measurement using ion beam current in a mass spectrometer
- Patent number 6,627,874
- Issue date Sep 30, 2003
- Agilent Technologies, Inc.
- George Yefchak
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Ion packet generation for mass spectrometer
- Patent number 6,455,845
- Issue date Sep 24, 2002
- Agilent Technologies, Inc.
- Ganggiang Li
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Time-of-flight mass spectrometer with post-deflector filter assembly
- Patent number 6,369,384
- Issue date Apr 9, 2002
- Agilent Technologies, Inc.
- George E. Yefchak
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Sequential Low/High-Resolution Library Search
- Publication number 20140217276
- Publication date Aug 7, 2014
- AGILENT TECHNOLOGIES, INC.
- George E. Yefchak
- G01 - MEASURING TESTING
Information Patent Application
Mass Spectrometer gain adjustment using ion ratios
- Publication number 20090108191
- Publication date Apr 30, 2009
- George Yefchak
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Peak finding in low-resolution mass spectrometry by use of chromato...
- Publication number 20080073499
- Publication date Mar 27, 2008
- George Yefchak
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
High-precision feedback control for ion sculpting of solid state fe...
- Publication number 20050126905
- Publication date Jun 16, 2005
- President and Fellows of Harvard College
- Jene A. Golovchenko
- B81 - MICRO-STRUCTURAL TECHNOLOGY
Information Patent Application
METHODS AND APPARATUS FOR INTRODUCING LIQUIDS INTO MICROFLUIDIC CHA...
- Publication number 20050022895
- Publication date Feb 3, 2005
- Phillip W. Barth
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Thermal drift compensation to mass calibration in time-of-flight ma...
- Publication number 20030034448
- Publication date Feb 20, 2003
- George Yefchak
- H01 - BASIC ELECTRIC ELEMENTS