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:
Sep. 15, 2020
Filed:
Sep. 11, 2018
Applicant:
Littelfuse, Inc., Chicago, IL (US);
Inventors:
Jianhua Chen, Sunnyvale, CA (US);
Chun Kwan Tsang, Morgan Hill, CA (US);
Assignee:
Littelfuse, Inc., Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C 7/02 (2006.01); H01B 1/02 (2006.01); C08L 23/08 (2006.01); C08L 23/06 (2006.01); C08K 3/04 (2006.01); C08K 3/14 (2006.01); C08K 3/38 (2006.01); C08L 27/16 (2006.01); H01C 1/14 (2006.01); H01C 17/065 (2006.01);
U.S. Cl.
CPC ...
H01C 7/027 (2013.01); C08K 3/04 (2013.01); C08K 3/14 (2013.01); C08K 3/38 (2013.01); C08L 23/06 (2013.01); C08L 23/0853 (2013.01); C08L 27/16 (2013.01); H01B 1/026 (2013.01); H01C 1/14 (2013.01); H01C 1/1406 (2013.01); H01C 7/02 (2013.01); H01C 17/06533 (2013.01); H01C 17/06553 (2013.01); H01C 17/06586 (2013.01); C08K 2201/001 (2013.01); C08K 2201/005 (2013.01);
Abstract
A polymeric positive temperature coefficient (PPTC) device including a PPTC body, a first electrode disposed on a first side of the PPTC body, and a second electrode disposed on a second side of the PPTC body, wherein the PPTC body is formed of a PPTC material that includes a maximum of 65% by volume of a conductive filler, wherein 10%-39% by volume of the PPTC material is a conductive ceramic filler and wherein the rest of the conductive filler includes at least one of carbon and a metallic filler.