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:
Jul. 15, 2003
Filed:
Jun. 28, 2000
Paul N. Becker, San Carlos, CA (US);
Orion Jankowski, Stanford, CA (US);
Cecilia A. Walsh, Minnetonka, MN (US);
Tyco Electronics Corporation, Middletown, PA (US);
Abstract
An electrical device in which an element composed of a conductive polymer composition is positioned in contact with the first surface of a metal electrode, the first surface having a center line average roughness R and a reflection density RD, the product R times RD being 0.5 to 1.6 &mgr;m. The conductive polymer composition preferably exhibits PTC behavior. In a second embodiment an electrical device has an element composed of a conductive polymer composition in contact with the first surface of a metal electrode produced by providing a base metal foil having an R of at most 0.45 &mgr;m and depositing material onto the base metal foil to form a first surface having a product of R times RD of at least 0.14 &mgr;m. Other embodiments include electrical devices with metal electrodes made by pulse plating processes, and metal electrodes made by electrodeposition under diffusion-limited conditions. The electrical devices may be circuit protection devices and have improved electrical and physical properties.