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:
Dec. 05, 2006
Filed:
Sep. 02, 2004
Theodore E. Miller, Jr., Midland, MI (US);
Eugene L. Liening, Freeland, MI (US);
Malcolm W. Warren, Ii, Midland, MI (US);
Leo C. Kempel, Okemos, MI (US);
Gregory L. Charvat, East Lansing, MI (US);
Theodore E. Miller, Jr., Midland, MI (US);
Eugene L. Liening, Freeland, MI (US);
Malcolm W. Warren, II, Midland, MI (US);
Leo C. Kempel, Okemos, MI (US);
Gregory L. Charvat, East Lansing, MI (US);
The Dow Chemical Company, Midland, MI (US);
Michigan State University, East Lansing, MI (US);
Abstract
A method for detecting a latent environmental effect (such as a corrosive environment under insulation) or a latent structural change (such as a crack in a concealed structural member) at a known remote concealed location. The method of the instant invention includes three steps. The first step is to use a harmonic electromagnetic transponder at the known remote concealed location of the latent environmental effect or the latent structural change, the harmonic electromagnetic transponder having a reactive portion which reacts to the latent environmental effect or latent structural change to modify the harmonic emission of the transponder. The second step is to remotely interrogate the transponder by directing electromagnetic radiation at the transponder. The third step is to use the harmonic emission of the transponder to remotely determine the latent environmental effect or the latent structural change.