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:
May. 07, 2019
Filed:
Mar. 12, 2014
Invoy Holdings, Llc, Chandler, AZ (US);
Brent Satterfield, West Bountiful, UT (US);
Lubna Ahmad, Chandler, AZ (US);
Rhett Martineau, Gilbert, AZ (US);
Invoy Holdings, LLC, Aliso Viejo, CA (US);
Abstract
A method is provided for sensing ammonia in a breath sample. The method comprises conditioning the breath sample so that the conditioned breath sample has a relative humidity greater than a relative humidity corresponding to a first inflection point of a downwardly concave lowest ammonia iso-concentration curve. It also comprises contacting the conditioned breath sample with an interactant that interacts with the ammonia in the conditioned breath sample, wherein the interaction causes a change in an optical characteristic in relation to the amount of the ammonia in the breath sample. It further comprises using the change in the optical characteristic to sense the ammonia in the breath sample. Related apparatuses are also provided.