Southwest Sciences Incorporated
38Patents
11Active
38Granted
45Portfolio score
Filing activity: May 18, 1988 → Jun 19, 2014 · 5 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4934816A | Laser absorption detection enhancing apparatus and method | Physics | 71 | Expired |
| US6219142A | Method and apparatus for determining wave characteristics from wave phenomena | Physics | 65 | Expired |
| US9869731B1 | Wavelength-modulated coherence pumping and hyperfine repumping for an atomic magnetometer | Physics | 54 | Active |
| US7142105B2 | Fire alarm algorithm using smoke and gas sensors | Physics | 50 | Expired |
| US6356350B1 | Wavelength modulation spectroscopy with multiple harmonic detection | Physics | 48 | Expired |
| US6618148B1 | Acoustic resonance frequency locked photoacoustic spectrometer | Physics | 34 | Expired |
| US6615142B1 | Filtering to measure gas concentrations from spectral features | Physics | 32 | Expired |
| US7800751B1 | Dense pattern multiple pass cells | Physics | 29 | Active |
| US6608683B1 | Acoustic resonance phase locked photoacoustic spectrometer | Physics | 28 | Expired |
| US5015848A | Mass spectroscopic apparatus and method | Electricity | 28 | Expired |
| US7079254B2 | Method and apparatus for imaging internal structures of transparent and translucent materials | Human Necessities | 27 | Expired |
| US7352464B2 | Oxygen sensor for aircraft fuel inerting systems | Physics | 26 | Expired |
| US7616316B1 | Gas measurement over extreme dynamic range of concentrations | Physics | 25 | Active |
| US6683895B2 | Wavelength agile external cavity diode laser | Electricity | 18 | Expired |
| US6351309B1 | Dual modulation laser line-locking technique for wavelength modulation spectroscopy | Physics | 18 | Expired |
| US5973782A | Phaseless wavelength modulation spectroscopy | Physics | 15 | Expired |
| US7790467B1 | Diode laser based ketone and aldehyde detection | Emerging Cross-Sectional Technologies | 14 | Active |
| US7710568B1 | Portable natural gas leak detector | Physics | 14 | Active |
| US6552792B1 | Wavelength modulated photoacoustic spectrometer | Physics | 13 | Expired |
| US6940599B1 | Envelope functions for modulation spectroscopy | Physics | 13 | Expired |
| US6611335B1 | Tone burst diode laser spectroscopy | Physics | 12 | Expired |
| US8421455B1 | Pulsed free induction decay nonlinear magneto-optical rotation apparatus | Physics | 12 | Active |
| US7307716B2 | Near re-entrant dense pattern optical multipass cell | Physics | 12 | Expired |
| US9518972B2 | Methods for detecting bacterial infections | Physics | 11 | Active |
| US6587258B1 | Electro-optic electric field probe | Physics | 10 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.