The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2019
Filed:
Dec. 08, 2014
Battelle Memorial Institute, Columbus, OH (US);
Michael J. Murphy, Dublin, OH (US);
Michael J. Swickrath, Delaware, OH (US);
Battelle Memorial Institute, Columbus, OH (US);
Abstract
A dual quartz crystal microbalance (QCM) sensor is disclosed for use in a hand-held detection device () for detecting the presence of an odorant in hydrocarbon gaseous fuels. The odorant is a thiol-based compound, such as ethanethiol. One QCM () is coated with a coating typically containing a reagent that specifically reacts with the thiol of the odorant and alters its oscillation frequency as a result of mass gained in the reaction. A second QCM (') serves as a control and the two frequency signals may be heterodyned () to produce a delta-frequency representative of the mass change. Circuitry and signal processing () are used to produce a final result correlated to the level of thiol in the hydrocarbon gas.