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:
Oct. 08, 1985
Filed:
Apr. 21, 1980
Applicant:
Inventors:
Robert W Fouts, Jr, Redwood City, CA (US);
Andrew N Au, Fremont, CA (US);
Burton E Miller, Sunnyvale, CA (US);
Alan J Gotcher, Saratoga, CA (US);
Assignee:
Raychem Corporation, Menlo Park, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
252511 ; 252502 ; 252503 ; 252506 ; 252508 ; 252512 ; 252513 ; 252514 ; 252515 ; 523137 ; 524439 ; 524440 ; 524441 ; 524495 ; 524496 ; 524420 ; 524492 ;
Abstract
Conductive polymer compositions comprises a polymeric material having dispersed therein (a) conductive particles composed of a highly conductive material and (b) a particulate filler. The compositions exhibit a positive temperature coefficient of resistivity and undergo a large increase in resistivity as the temperature increases above a certain value. The compositions are useful in preparing electrical devices such as current limiting devices, heaters, EMI shields and the like.
Published as:
EP0038714A2; GB2074585A; EP0038714A3; JPS56161464A; CA1165996A; GB2074585B; US4545926A; EP0038714B1; ATE25892T1; DE3175988D1; JPH0428743B2;