Inventor
WANG MINGDA
US21 patents
⚠️ This page may combine multiple inventors who share the name “WANG MINGDA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AGILENT TECHNOLOGIES INC
7 patentsUS6723986B2Apr 20, 2004
Apparatus for manipulation of ions and methods of making apparatus
AGILENT TECHNOLOGIES INC37 citations91
US6998622B1Feb 14, 2006
On-axis electron impact ion source
AGILENT TECHNOLOGIES INC36 citations90
US10176977B2Jan 8, 2019
Ion source for soft electron ionization and related systems and methods
AGILENT TECHNOLOGIES INC2 citations73
US10546738B1Jan 28, 2020
Dielectric coated ion transfer device for mass spectrometry
AGILENT TECHNOLOGIES INC2 citations72
US7329879B2Feb 12, 2008
Apparatus for manipulation of ions and methods of making apparatus
AGILENT TECHNOLOGIES INC8 citations72
US7183545B2Feb 27, 2007
Multipole ion mass filter having rotating electric field
AGILENT TECHNOLOGIES INC4 citations62
US7259379B2Aug 21, 2007
On-axis electron impact ion source
AGILENT TECHNOLOGIES INC3 citations60
VARIAN ASSOCIATES
5 patentsUS5714755AFeb 3, 1998
Mass scanning method using an ion trap mass spectrometer
VARIAN ASSOCIATES112 citations96
US5291017AMar 1, 1994
Ion trap mass spectrometer method and apparatus for improved sensitivity
VARIAN ASSOCIATES88 citations94
US5457315AOct 10, 1995
Method of selective ion trapping for quadrupole ion trap mass spectrometers
VARIAN ASSOCIATES29 citations92
US5404011AApr 4, 1995
MSn using CID
VARIAN ASSOCIATES24 citations92
US5633497AMay 27, 1997
Surface coating to improve performance of ion trap mass spectrometers
VARIAN ASSOCIATES11 citations70
VARIAN INC
4 patentsUS7501623B2Mar 10, 2009
Two-dimensional electrode constructions for ion processing
VARIAN INC8 citations84
US7378648B2May 27, 2008
High-resolution ion isolation utilizing broadband waveform signals
VARIAN INC9 citations75
US7842918B2Nov 30, 2010
Chemical structure-insensitive method and apparatus for dissociating ions
VARIAN INC4 citations62
US7564029B2Jul 21, 2009
Sample ionization at above-vacuum pressures
VARIAN INC2 citations61