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. 15, 2012
Filed:
May. 19, 2008
Geoff E. Fair, Centerville, OH (US);
Triplicane A. Parthasarathy, Beavercreek, OH (US);
Ronald J. Kerans, Yellow Springs, OH (US);
Geoff E. Fair, Centerville, OH (US);
Triplicane A. Parthasarathy, Beavercreek, OH (US);
Ronald J. Kerans, Yellow Springs, OH (US);
The United States of America as represented by the Secretary of the Air Force, Washington, DC (US);
Abstract
The present invention provides a thermal history sensor having a plurality of substrates positioned adjacent to an item. The substrates include different compositions, such that the substrates respond to thermal exposures with different changes in electrical conductivity or magnetic permeability. By measuring the electrical or magnetic properties of the substrates following thermal exposure, information about the thermal history may be obtained.