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. 20, 2012
Filed:
Nov. 19, 2007
Timothy D. Fletcher, Lino Lakes, MN (US);
Todd J. Christianson, Oakdale, MN (US);
Vincent D. Romero, Maplewood, MN (US);
Bruce A. Sventek, St. Paul, MN (US);
Timothy D. Fletcher, Lino Lakes, MN (US);
Todd J. Christianson, Oakdale, MN (US);
Vincent D. Romero, Maplewood, MN (US);
Bruce A. Sventek, St. Paul, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Provided is a double-sided lapping carrier comprising a base carrier having a first major surface, a second major surface and at least one aperture for holding a workpiece, said aperture extending from the first major surface through the base carrier to the second major surface, wherein the base carrier comprises a first metal, the circumference of said aperture is defined by a third surface of the base carrier consisting of the first metal and, at least a portion of the first major surface or at least a portion of each of the first and the second major surfaces comprises a polymeric region, said polymeric region comprising a polymer having a work to failure of at least 10 Joules. Also provide are methods of lapping.