Inventor · disambiguated record
James Hager
Also filed as: HAGER JAMES · HAGER JAMES W · HAGER JAMES WALTER
37 granted patents·11 pending applications·997 citations·filing 1989–2022
97Inventor score
Technology areasH01J
Files withDH TECHNOLOGIES DEV PTE LTD21MDS INC15HAGER JAMES W2MDS ANALYTICAL TECHNOLOGIES2APPLERA CORP1
Top patents by PatentIndex Score
48 records- 0199US6177668B1Axial ejection in a multipole mass spectrometerMDS INC·Filed 1998·Granted Jan 23, 2001·332 cites·48 claims
- 0298US6504148B1Quadrupole mass spectrometer with ION traps to enhance sensitivityMDS INC·Filed 1999·Granted Jan 7, 2003·165 cites·20 claims
- 0396US7227130B2Method for providing barrier fields at the entrance and exit end of a mass spectrometerAPPLERA CORP·Filed 2005·Granted Jun 5, 2007·31 cites·2 claims
- 0494US7365319B2Method for providing barrier fields at the entrance and exit end of a mass spectrometerMDS INC·Filed 2006·Granted Apr 29, 2008·21 cites·2 claims
- 0594US6720554B2Triple quadrupole mass spectrometer with capability to perform multiple mass analysis stepsMDS INC·Filed 2001·Granted Apr 13, 2004·45 cites·27 claims
- 0692US6703607B2Axial ejection resolution in multipole mass spectrometersMDS INC·Filed 2002·Granted Mar 9, 2004·49 cites·15 claims
- 0792US6627876B2Method of reducing space charge in a linear ion trap mass spectrometerMDS INC·Filed 2002·Granted Sep 30, 2003·37 cites·6 claims
- 0889US5248875AMethod for increased resolution in tandem mass spectrometryMDS HEALTH GROUP LTD·Filed 1992·Granted Sep 28, 1993·83 cites·36 claims
- 0988US10741378B2RF/DC filter to enhance mass spectrometer robustnessDH TECHNOLOGIES DEV PTE LTD·Filed 2016·Granted Aug 11, 2020·5 cites·19 claims
- 1088US6909089B2Methods and apparatus for reducing artifacts in mass spectrometersMDS INC·Filed 2003·Granted Jun 21, 2005·31 cites·34 claims
- 1188US6700120B2Method for improving signal-to-noise ratios for atmospheric pressure ionization mass spectrometryMDS INC·Filed 2000·Granted Mar 2, 2004·25 cites·27 claims
- 1284US7622712B2Method for operating an ion trap mass spectrometer systemMDS ANALYTICAL TECHNOLOGIES·Filed 2008·Granted Nov 24, 2009·9 cites·23 claims
- 1384US7060972B2Triple quadrupole mass spectrometer with capability to perform multiple mass analysis stepsMDS INC·Filed 2004·Granted Jun 13, 2006·19 cites·23 claims
- 1482US6015972ABoundary activated dissociation in rod-type mass spectrometerMDS INC·Filed 1998·Granted Jan 18, 2000·36 cites·9 claims
- 1581US6194717B1Quadrupole mass analyzer and method of operation in RF only mode to reduce background signalMDS INC·Filed 1999·Granted Feb 27, 2001·36 cites·21 claims
- 1678US7019290B2System and method for modifying the fringing fields of a radio frequency multipoleMDS INC·Filed 2003·Granted Mar 28, 2006·13 cites·46 claims
- 1774US7579585B2Method and apparatus for scanning an ion trap mass spectrometerSCIEX DIVISION OF MDS INC·Filed 2006·Granted Aug 25, 2009·3 cites·23 claims
- 1872US7569813B2Method for enhancing mass assignment accuracyMDS ANALYTICAL TECH BU MDS INC·Filed 2007·Granted Aug 4, 2009·3 cites·9 claims
- 1972US7041967B2Method of mass spectrometry, to enhance separation of ions with different chargesMDS INC·Filed 2001·Granted May 9, 2006·8 cites·23 claims
- 2071US6028308AResolving RF mass spectrometerMDS INC·Filed 1997·Granted Feb 22, 2000·22 cites·11 claims
- 2170US9202676B2Method and system for quantitative and qualitative analysis using mass spectrometryDH TECHNOLOGIES DEV PTE LTD·Filed 2012·Granted Dec 1, 2015·2 cites·20 claims
- 2264US12456615B2Identification of harmonics in RF quadrupole Fourier transform mass spectraDH TECHNOLOGIES DEV PTE LTD·Filed 2021·Granted Oct 28, 2025·0 cites·20 claims
- 2362US8399826B2Method of processing ionsHAGER JAMES W·Filed 2010·Granted Mar 19, 2013·1 cites·18 claims
- 2461US7880140B2Multipole mass filter having improved mass resolutionDH TECHNOLOGIES DEV PTE LTD·Filed 2007·Granted Feb 1, 2011·2 cites·24 claims
- 2560US12080531B2Fourier transform quadrupole calibration methodDH TECHNOLOGIES DEV PTE LTD·Filed 2020·Granted Sep 3, 2024·0 cites·18 claims
- 2660US2021327700A1RF/DC Cutoff to Reduce Contamination and Enhance Robustness of Mass Spectrometry SystemsDH TECHNOLOGIES DEV PTE LTD·Filed 2019·Application pending·0 cites
- 2759US12230489B2High pressure mass analyzerDH TECHNOLOGIES DEV PTE LTD·Filed 2021·Granted Feb 18, 2025·0 cites·17 claims
- 2858USD314790SEnvelopeHAGER JAMES W·Filed 1989·Granted Feb 19, 1991·8 cites·1 claims
- 2956US12476103B2Signal-to-Noise improvement in fourier transform quadrupole mass spectrometerDH TECHNOLOGIES DEV PTE LTD·Filed 2021·Granted Nov 18, 2025·0 cites·18 claims
- 3056US5998787AMethod of operating a mass spectrometer including a low level resolving DC input to improve signal to noise ratioMDS INC·Filed 1997·Granted Dec 7, 1999·11 cites·10 claims
- 3155US11869758B2Mass separator for use in a mass spectrometry systemDH TECHNOLOGIES DEV PTE LTD·Filed 2019·Granted Jan 9, 2024·0 cites·21 claims
- 3254US9768009B2Systems and methods for arbitrary quadrupole transmission windowingDH TECHNOLOGIES DEV PTE LTD·Filed 2014·Granted Sep 19, 2017·0 cites·20 claims
- 3353US2024162027A1System and Method for Variable FFT Analysis Windows in Mass SpectrometryDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites
- 3451US2024234123A1Method of Performing MS/MS of High Intensity Ion Beams Using a Bandpass Filtering Collision Cell to Enhance Mass Spectrometry RobustnessDH TECHNOLOGIES DEV PTE LTD·Filed 2021·Application pending·0 cites
- 3550US12033844B2Auto gain control for optimum ion trap fillingDH TECHNOLOGIES DEV PTE LTD·Filed 2020·Granted Jul 9, 2024·0 cites·20 claims
- 3648US12243737B2Methods and systems of Fourier transform mass spectrometryDH TECHNOLOGIES DEV PTE LTD·Filed 2020·Granted Mar 4, 2025·0 cites·20 claims
- 3748US11881388B2Fourier transform mass spectrometers and methods of analysis using the sameDH TECHNOLOGIES DEV PTE LTD·Filed 2020·Granted Jan 23, 2024·0 cites·20 claims
- 3848US9997340B2RF-only detection scheme and simultaneous detection of multiple ionsDH TECHNOLOGIES DEV PTE LTD·Filed 2014·Granted Jun 12, 2018·0 cites·10 claims
- 3948US2024177987A1Method for Analyzing Samples Including a High M/Z CutoffDH TECHNOLOGIES DEV PTE LTD·Filed 2021·Application pending·0 cites
- 4047US2024203719A1Planar Ion Processing StationDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites
- 4143US2014353491A1Creating an ion-ion reaction region within a low-pressure linear ion trapDH TECHNOLOGIES DEV PTE LTD·Filed 2012·Application pending·0 cites
- 4243US2004238737A1Method of reducing space charge in a linear ion trap mass spectrometerFiled 2002·Application pending·0 cites
- 4342US2004031917A1Method for improving signal-to-noise ratios for atmospheric pressure ionization mass spectrometryFiled 2001·Application pending·0 cites
- 4442US2004183005A1Method of mass spectrometry, to enhance separation of ions with different chargesFiled 2002·Application pending·0 cites
- 4541US2003168589A1Triple quadrupole mass spectrometer with capability to perform multiple mass analysis stepsFiled 2001·Application pending·0 cites
- 4640US11810771B2Fourier transform mass spectrometer based on use of a fringing field to convert radial oscillations of excited ions to axial oscillationsDH TECHNOLOGIES DEV PTE LTD·Filed 2018·Granted Nov 7, 2023·0 cites·9 claims
- 4739US10446384B2Fourier transform mass spectrometerDH TECHNOLOGIES DEV PTE LTD·Filed 2016·Granted Oct 15, 2019·0 cites·16 claims
- 4836US2010176291A1Mass spectrometerMDS ANALYTICAL TECHNOLOGIES·Filed 2010·Application pending·0 cites
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