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:
Aug. 20, 2019
Filed:
Oct. 19, 2018
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01K 7/00 (2006.01); G01K 1/00 (2006.01); G01K 7/34 (2006.01); G01K 7/38 (2006.01); H01B 3/12 (2006.01); C01G 23/00 (2006.01); C01G 25/00 (2006.01); C01G 27/00 (2006.01); C04B 35/468 (2006.01); H01G 4/12 (2006.01); H01L 37/02 (2006.01); H01G 7/04 (2006.01); H01G 7/06 (2006.01); H02G 1/00 (2006.01); C08K 3/22 (2006.01);
U.S. Cl.
CPC ...
G01K 7/34 (2013.01); C01G 23/006 (2013.01); C01G 25/006 (2013.01); C01G 27/006 (2013.01); C04B 35/4682 (2013.01); G01K 7/38 (2013.01); H01B 3/12 (2013.01); H01G 4/1227 (2013.01); H01G 7/04 (2013.01); H01G 7/06 (2013.01); H01L 37/025 (2013.01); C04B 2235/3244 (2013.01); C04B 2235/3293 (2013.01); C08K 2003/2237 (2013.01); H02G 1/00 (2013.01);
Abstract
A passive temperature-sensing apparatus, which includes a capacitive sensing element that includes a capacitive sensing composition that includes a ferroelectric ceramic material that exhibits a measurable electrical Curie temperature that is below 30 degrees C. The capacitive sensing composition exhibits a negative slope of capacitance versus temperature over the temperature range of from 30 degrees C. to 150 degrees C.