Ara Chutjian
29Patents
14h-index
27Co-inventors
81Inventor score
Filing activity: Nov 30, 1977 → Aug 11, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5726448A | Rotating field mass and velocity analyzer | Electricity | 81 | Expired |
| US5596193A | Miniature quadrupole mass spectrometer array | Electricity | 64 | Expired |
| US6157029A | Miniature micromachined quadrupole mass spectrometer array and method of making the same | Electricity | 48 | Expired |
| US6049052A | Miniature micromachined quadrupole mass spectrometer array and method of making the same | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4933551A | Reversal electron attachment ionizer for detection of trace species | Electricity | 34 | Expired |
| US6188067A | Miniature micromachined quadrupole mass spectrometer array and method of making the same | Electricity | 33 | Expired |
| US7332345B2 | Chemical sensor system | Emerging Cross-Sectional Technologies | 25 | Expired |
| US4649273A | Variable energy, high flux, ground-state atomic oxygen source | Electricity | 24 | Expired |
| US6262416A | Miniature micromachined quadrupole mass spectrometer array and method of making the same | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6281494A | Miniature micromachined quadrupole mass spectrometer array and method of making the same | Electricity | 24 | Expired |
| US6521898B2 | High-efficiency electron ionizer for a mass spectrometer array | Electricity | 21 | Expired |
| US4649278A | Generation of intense negative ion beams | Electricity | 21 | Expired |
| US5719393A | Miniature quadrupole mass spectrometer array | Electricity | 16 | Expired |
| US4902647A | Surface modification using low energy ground state ion beams | Emerging Cross-Sectional Technologies | 15 | Expired |
| US7772550B2 | Electronic drive and acquisition system for mass spectrometry | Electricity | 10 | Active |
| US6469299B2 | Miniature micromachined quadrupole mass spectrometer array and method of making the same | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4600840A | Double photon excitation of high-rydberg atoms as a long-lived submillimeter detector | Physics | 9 | Expired |
| US4158775A | High resolution threshold photoelectron spectroscopy by electron attachment | Physics | 8 | Expired |
| US5374828A | Electron reversal ionizer for detection of trace species using a spherical cathode | Electricity | 8 | Expired |
| US5256874A | Gridded electron reversal ionizer | Electricity | 6 | Expired |
| US6205043A | Power supply with air core transformer and seperated power supplies for high dynamic range | Electricity | 6 | Expired |
| US5670378A | Method for trace oxygen detection | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6434031B1 | Driving a quadrupole mass spectrometer via an isolating stage | Electricity | 4 | Expired |
| US6072182A | High-efficiency electron ionizer for a mass spectrometer array | Electricity | 4 | Expired |
| US6583702B2 | Quadrupole mass spectrometer driver with higher signal levels | Electricity | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.