Gregory J. Wells
69Patents
20h-index
58Co-inventors
91Inventor score
Filing activity: Mar 19, 1979 → Mar 6, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5714755A | Mass scanning method using an ion trap mass spectrometer | Electricity | 69 | Expired |
| US6294780A | Pulsed ion source for ion trap mass spectrometer | Electricity | 52 | Expired |
| US6730904B1 | Asymmetric-field ion guiding devices | Electricity | 37 | Expired |
| US5198665A | Quadrupole trap improved technique for ion isolation | Electricity | 35 | Expired |
| US5397894A | Method of high mass resolution scanning of an ion trap mass spectrometer | Electricity | 35 | Expired |
| US5479012A | Method of space charge control in an ion trap mass spectrometer | Electricity | 34 | Expired |
| US5448061A | Method of space charge control for improved ion isolation in an ion trap mass spectrometer by dynamically adaptive sampling | Electricity | 30 | Expired |
| US5517025A | Frequency modulated selected ion species isolation in a quadrupole ion trap | Electricity | 28 | Expired |
| US7034293B2 | Linear ion trap apparatus and method utilizing an asymmetrical trapping field | Electricity | 26 | Expired |
| US5081127A | Substituted 1,2,3-triazole angiotensin II antagonists | Chemistry; Metallurgy | 25 | Expired |
| US5302826A | Quadrupole trap improved technique for collisional induced disassociation for MS/MS processes | Electricity | 25 | Expired |
| US5083004A | Spectroscopic plasma torch for microwave induced plasmas | Electricity | 25 | Expired |
| US4597421A | Method and device for on-column injection of a liquid sample into small diameter columns | Physics | 24 | Expired |
| US5521380A | Frequency modulated selected ion species isolation in a quadrupole ion trap | Electricity | 22 | Expired |
| US5640011A | Method of detecting selected ion species in a quadrupole ion trap | Electricity | 21 | Expired |
| US5015651A | Treatment of hypertension with 1,2,4-angiotensin II antagonists | Chemistry; Metallurgy | 21 | Expired |
| US5381006A | Methods of using ion trap mass spectrometers | Electricity | 21 | Expired |
| US6207955A | Pneumatically assisted electrospray device with alternating pressure gradients for mass spectrometry | Electricity | 20 | Expired |
| US6177669A | Vortex gas flow interface for electrospray mass spectrometry | Physics | 20 | Expired |
| US6710336B2 | Ion trap mass spectrometer using pre-calculated waveforms for ion isolation and collision induced dissociation | Electricity | 20 | Expired |
| US5608216A | Frequency modulated selected ion species isolation in a quadrupole ion trap | Electricity | 19 | Expired |
| US5396064A | Quadrupole trap ion isolation method | Electricity | 18 | Expired |
| US4999162A | High temperature flame jet for gas chromatography | Physics | 17 | Expired |
| US5457315A | Method of selective ion trapping for quadrupole ion trap mass spectrometers | Electricity | 16 | Expired |
| US5093346A | Substituted 1,2,4-triazole angiotensin II antagonists | Chemistry; Metallurgy | 14 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.