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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.:

US 9261462 B1

PDFFull Text
Date of Patent:
Feb. 16, 2016

Filed:

Dec. 13, 2012

Monitoring of photo-aging of light-based chemical indicators using illumination-brightness differential scheme

Applicant:

Step Ahead Innovations, Inc., Williston, VT (US);

Inventor:

James E. Clark, South Burlington, VT (US);

Assignee:

STEP AHEAD INNOVATIONS, INC., South Burlington, VT (US);

Attorney:

Birch Tree IP Law & Strategy PLLC

Primary Examiner:

Gregory J Toatley

Assistant Examiner:

Jarreas C Underwood

Int. Cl.
CPC ...
G01N 21/77 (2006.01); G01N 21/88 (2006.01); G01N 33/18 (2006.01); G01N 21/15 (2006.01); G01N 31/22 (2006.01); C02F 1/00 (2006.01); G01N 21/85 (2006.01); F21V 8/00 (2006.01); G01N 21/78 (2006.01); A01K 63/04 (2006.01); G01N 21/64 (2006.01);
U.S. Cl.
CPC ...
G01N 21/88 (2013.01); C02F 1/008 (2013.01); G01N 21/15 (2013.01); G01N 21/77 (2013.01); G01N 21/78 (2013.01); G01N 21/8507 (2013.01); G01N 31/22 (2013.01); G01N 33/18 (2013.01); G02B 6/0001 (2013.01); A01K 63/04 (2013.01); C02F 2209/005 (2013.01); C02F 2209/006 (2013.01); C02F 2209/008 (2013.01); C02F 2209/06 (2013.01); C02F 2209/14 (2013.01); C02F 2209/15 (2013.01); C02F 2209/18 (2013.01); G01N 21/6428 (2013.01); G01N 2021/7793 (2013.01); Y10S 436/805 (2013.01); Y10S 436/809 (2013.01); Y10T 436/11 (2015.01); Y10T 436/115831 (2015.01); Y10T 436/12 (2015.01); Y10T 436/173076 (2015.01); Y10T 436/173845 (2015.01); Y10T 436/174614 (2015.01); Y10T 436/175383 (2015.01); Y10T 436/193333 (2015.01); Y10T 436/207497 (2015.01); Y10T 436/25 (2015.01); Y10T 436/25375 (2015.01);
Abstract

Photo-aging monitoring of light-based chemical indicators that experience performance degradation as the cumulative amount of light exposure from measurement and/or reference illumination increases from usage. Differing regions on a chemical indicator are illuminated with measurement illumination light of differing exposures, for example, higher brightness, longer exposure times, or both. Readings from the differing regions are compared with known aging information for the chemical indicator at issue to determine a confidence factor for the measurements. The confidence factor can be used to control various actions relating to measurements acquired from the chemical indicators, such as compensating measurement readings for photo-aging, assigning confidence levels to measurement readings, and issuing alerts to users when photo-aging exceeds one or more predetermined thresholds.

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Quick Actions:

Clark, James. (2016). Monitoring of photo-aging of light-based chemical indicators using illumination-brightness differential scheme (U.S. Patent No. 9261462). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9261462

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