Environmental Technologies, LLC
20Patents
2Active
20Granted
49Portfolio score
Filing activity: Nov 15, 1988 → Jul 3, 2024
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5053343A | Selective ionization of gas constituents using electrolytic reactions | Emerging Cross-Sectional Technologies | 63 | Expired |
| US5338931A | Photoionization ion mobility spectrometer | Physics | 61 | Expired |
| US5283199A | Chlorine dioxide monitor based on ion mobility spectrometry with selective dopant chemistry | Emerging Cross-Sectional Technologies | 58 | Expired |
| US5083019A | Preconcentrator for ion mobility spectrometer | Physics | 52 | Expired |
| US5481925A | Low turbulence airflow sensor | Physics | 36 | Expired |
| US5234838A | Ammonia monitor based on ion mobility spectrometry with selective dopant chemistry | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5032721A | Acid gas monitor based on ion mobility spectrometry | Physics | 32 | Expired |
| US5095206A | Method and apparatus for improving the specificity of an ion mobility spectrometer utillizing sulfur dioxide dopant chemistry | Electricity | 26 | Expired |
| US5554846A | Apparatus and a method for detecting alarm molecules in an air sample | Physics | 25 | Expired |
| US5021654A | All ceramic ion mobility spectrometer cell | Physics | 22 | Expired |
| US5587581A | Method and an apparatus for an air sample analysis | Physics | 21 | Expired |
| US4933285A | Multiple monolayers of polymeric linkages on a solid phase for immobilizing macromolecules | Emerging Cross-Sectional Technologies | 20 | Expired |
| US7595003B2 | On-board water treatment and management process and apparatus | Chemistry; Metallurgy | 13 | Expired |
| US5830344A | Disposable sensor for metal analysis and method of using same | Physics | 9 | Expired |
| US4950893A | Method and apparatus for enhanced ion spectra generation and detection in ion mobility spectrometry | Physics | 9 | Expired |
| US5975021A | Centrifugal feed distributor | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5411299A | Interconnecting apparatus and method for air handling systems | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4928033A | Thermionic ionization source | Electricity | 3 | Expired |
| US11730848B1 | Gas irradiation apparatus and method | Human Necessities | 0 | Active |
| US12220504B1 | Gas irradiation apparatus | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.