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.

Date of Patent:
Nov. 12, 2024

Filed:

Jan. 25, 2021
Applicant:

Raytheon Company, Waltham, MA (US);

Inventor:

Zachary T. Dunn, Wylie, TX (US);

Assignee:

Raytheon Company, Tewksbury, MA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01K 11/16 (2021.01); G01D 7/00 (2006.01); G01K 11/12 (2021.01);
U.S. Cl.
CPC ...
G01K 11/16 (2013.01); G01D 7/005 (2013.01); G01K 11/12 (2013.01);
Abstract

An apparatus includes an absorbing material configured to absorb electromagnetic energy. The apparatus also includes a thermochromic material in or on the absorbing material, where the thermochromic material is configured to change one or more visible characteristics based on the absorbing material being heated above a specified temperature threshold. The absorbing material may be configured to absorb radio frequency signals or microwave signals. The one or more visible characteristics may include at least one of: color and opacity.


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