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. 17, 2023
Filed:
Oct. 19, 2020
Ams Trace Metals, Inc., Sunnyvale, CA (US);
Harmesh K. Saini, Santa Clara, CA (US);
Michael J. West, San Jose, CA (US);
Qin Wang, San Jose, CA (US);
James Garvey, San Jose, CA (US);
Paul Rand, San Jose, CA (US);
Mark Angelo, San Jose, CA (US);
David Johnston, San Jose, CA (US);
Robert Ormond, San Jose, CA (US);
Ye Han, San Jose, CA (US);
AMS Trace Metals, Inc., Wilmington, DE (US);
Abstract
A real-time, on-line method and analytical system for determining halohydrocarbons in water which operate by (1) extracting on-line samples; (2) purging volatile halohydrocarbons from the water (e.g., with air or nitrogen); (3) carrying the purge gas containing the analytes of interest over a porous surface where the analytes are adsorbed; (4) recovering the analytes from the porous surface with heat (thermal desorption) or solvent (solvent elution) to drive the analytes into an organic chemical mixture; (5) generating an optical change (e.g., color change) in dependence upon a reaction involving the analytes and a pyridine derivative; and (6) measuring optical characteristics associated with the reaction to quantify the volatile halogenated hydrocarbon concentration.