Devices and methods to detect and quantify trace gases
US9329154B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2012 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Nov 1, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02809
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Sensing devices based on a surface acoustic wave (“SAW”) device coated with an absorbent crystalline or amorphous layer for detecting at least one chemical analyte in a gaseous carrier. Methods for detecting the presence of a chemical analyte in a gaseous carrier using such devices are also disclosed. The sensing devices and methods for their use may be configured for sensing chemical analytes selected from the group consisting of water vapor, carbon dioxide, methanol, ethanol, carbon monoxide, nitric oxide, nitrous oxide, organic amines, organic compounds containing NO2 groups, halogenated hydrocarbons, acetone, hexane, toluene, isopropanol, alcohols, alkanes, alkenes, benzene, functionalized aromatics, ammonia (NH3), phosgene (COCl2), sulfur mustard, nerve agents, sulfur dioxide, tetrahydrofuran (THF) and methyltertbutyl ether (MTBE) and combinations thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.