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. 02, 2007
Filed:
May. 27, 2005
Yuri Markevitch, San Jose, CA (US);
Mark C. Mcmaster, Menlo Park, CA (US);
Yu-en Percy Chang, Mountain View, CA (US);
Yuri Markevitch, San Jose, CA (US);
Mark C. McMaster, Menlo Park, CA (US);
Yu-En Percy Chang, Mountain View, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
An apparatus and system for precise lapping of recessed and protruding elements in a workpiece is disclosed. According to one embodiment, a system is provided having an air bearing surface with electrical components embedded therein to provide a desired surface dimension thereof. The described system embodiment comprises a non-abrasive lapping plate having a lapping surface with a plurality of grooves therein, a support structure for supporting a workpiece such that an air bearing surface thereof is exposed, and a non-abrasive liquid. When the non-abrasive liquid is dispensed between the air bearing surface and the lapping plate, the lapping plate contacts the air bearing surface such that the air bearing surface is lapped solely by the grooves in the lapping plate. The electrical components of the air bearing surface are lapped such that they are substantially uniform in dimension relative to the air bearing surface.