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:
Dec. 16, 2003
Filed:
May. 11, 2000
Glenn Gee, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A lapping process fixture has a base with a mounting surface and a membrane on the mounting surface for supporting a workpiece. The membrane is bonded to the mounting surface and has adhesive on its outer surface such that the workpiece adheres to it. The membrane extends across and seals an opening to a cavity inside the base. The cavity is filled with fluid that may be sealed or externally pressurized through ports in the base. The fixture restrains the workpiece to minimize distortion of its surface during processing. The workpiece is restrained from normal-directed movement by fluidic pressure such that the normal force is uniformly distributed across the surface area of the workpiece. The external adhesive on the membrane restrains the workpiece from tangential movement.