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:
Mar. 25, 2008
Filed:
Sep. 05, 2002
Rui Yang, Austin, TX (US);
Christopher G. Dunn, Austin, TX (US);
Nathan P. Kreutter, Austin, TX (US);
Rui Yang, Austin, TX (US);
Christopher G. Dunn, Austin, TX (US);
Nathan P. Kreutter, Austin, TX (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A dielectric film for use as a substrate for a flexible circuit comprises a polymer selected from the group consisting of liquid crystal polymers and polyimide copolymers including carboxylic ester structural units in the polymeric backbone. The dielectric film has a thickness from about 25 μm to about 60 μm including at least one thinned, recessed region wherein the thickness is reduced to less than 15 μm, as required for use of the dielectric film in e.g. ink jet print head, hard disk drive head gimbal assembly and touch sensor applications.