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. 16, 2023
Filed:
Feb. 25, 2020
Applicant:
Littelfuse, Inc., Chicago, IL (US);
Inventor:
Jianhua Chen, Sunnyvale, CA (US);
Assignee:
Littelfuse, Inc., Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 7/02 (2021.01); H05B 3/03 (2006.01); H05B 3/14 (2006.01); H05B 3/26 (2006.01); H01C 1/14 (2006.01); H01C 7/02 (2006.01);
U.S. Cl.
CPC ...
G02B 7/028 (2013.01); H01C 1/1406 (2013.01); H01C 7/02 (2013.01); H05B 3/03 (2013.01); H05B 3/146 (2013.01); H05B 3/26 (2013.01); H05B 2203/02 (2013.01); H05B 2214/04 (2013.01);
Abstract
A resistance heater may include a polymer positive temperature coefficient (PPTC) material, arranged in a ring shape that defines a heater body; and an electrode assembly, comprising two or more electrodes arranged in contact with the heater body at two or more locations, wherein PPTC material comprises: a polymer matrix, the polymer matrix defining a PPTC body; and a conductive filler component, disposed in the polymer matrix.