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:
Oct. 04, 2016
Filed:
Oct. 04, 2013
Rae Systems, Inc., San Jose, CA (US);
Prabhu Soundarrajan, Dublin, CA (US);
Peter C. Hsi, Dublin, CA (US);
Honeywell International Inc., Morris Plains, NJ (US);
Abstract
An integrated sensor of volatile organic gas can include a photoionization detector (PID) and one or more additional detectors such as an infrared detector, a catalytic combustion detector, or an electrochemical detector. One embodiment includes a methane detector that allows correction of the PID measurements for the interference of methane with the PID and/or allows a combination of measurements of the sensors to measure a total hydrocarbon concentration. A further sensor of non-hydrocarbon quenching gases such as carbon dioxide may also be used in correction of the PID measurements.