Gangqiang Li
33Patents
12h-index
19Co-inventors
78Inventor score
Filing activity: Sep 20, 1989 → Oct 15, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5614711A | Time-of-flight mass spectrometer | Performing Operations; Transporting | 113 | Expired |
| US5017780A | Ion reflector | Electricity | 52 | Expired |
| US6593570B2 | Ion optic components for mass spectrometers | Electricity | 46 | Expired |
| US6727495B2 | Ion mobility spectrometer with high ion transmission efficiency | Physics | 32 | Expired |
| US6462337B1 | Mass spectrometer electrospray ionization | Chemistry; Metallurgy | 31 | Expired |
| US6242735A | Power-modulated inductively coupled plasma spectrometry | Electricity | 31 | Expired |
| US6570153B1 | Tandem mass spectrometry using a single quadrupole mass analyzer | Electricity | 27 | Expired |
| US8642951B2 | Device, system, and method for reflecting ions | Electricity | 24 | Active |
| US6222186A | Power-modulated inductively coupled plasma spectrometry | Electricity | 21 | Expired |
| US5654543A | Mass spectrometer and related method | Electricity | 17 | Expired |
| US6642516B1 | Apparatus and method of laser dissociation for mass spectrometry | Electricity | 14 | Expired |
| US7495210B2 | Micro fluidic gas assisted ionization device and method | Performing Operations; Transporting | 13 | Active |
| US6759651B1 | Ion guides for mass spectrometry | Electricity | 12 | Expired |
| US6274866A | Systems and methods of mass spectrometry | Electricity | 12 | Expired |
| US7279681B2 | Ion trap with built-in field-modifying electrodes and method of operation | Electricity | 10 | Expired |
| US6700118B2 | Thermal drift compensation to mass calibration in time-of-flight mass spectrometry | Electricity | 10 | Expired |
| US7208726B2 | Ion trap mass spectrometer with scanning delay ion extraction | Electricity | 9 | Expired |
| US7642508B2 | Micro fluidic gas assisted ionization structure and method | Performing Operations; Transporting | 8 | Active |
| US7372042B2 | Lens device for introducing a second ion beam into a primary ion path | Electricity | 8 | Active |
| US7557343B2 | Segmented rod multipole as ion processing cell | Electricity | 7 | Active |
| US6639217B1 | In-line matrix assisted laser desorption/ionization mass spectrometry (MALDI-MS) systems and methods of use | Electricity | 7 | Expired |
| US7449687B2 | Methods and compositions for combining ions and charged particles | Electricity | 5 | Expired |
| US7397027B2 | Multi-channel high-field asymmetric waveform ion mobility spectrometry | Physics | 4 | Active |
| US7755040B2 | Mass spectrometer and electric field source for mass spectrometer | Electricity | 4 | Active |
| US7388193B2 | Time-of-flight spectrometer with orthogonal pulsed ion detection | Electricity | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.