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. 27, 2011
Filed:
Dec. 30, 2008
Method for manufacturing an electrical lapping guide for magnetic write head core width optimization
Edward Hin Pong Lee, San Jose, CA (US);
Vladimir Nikitin, Campbell, CA (US);
Michael Ming Hsiang Yang, Campbell, CA (US);
Yuan Yao, Fremont, CA (US);
Edward Hin Pong Lee, San Jose, CA (US);
Vladimir Nikitin, Campbell, CA (US);
Michael Ming Hsiang Yang, Campbell, CA (US);
Yuan Yao, Fremont, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
A method for manufacturing a magnetic write head that allows the location of the flare point of a write pole to be accurately located relative to the air bearing surface. The method includes the construction of a lapping guide having an edge feature that is easily and accurately located relative to the flare point of the write pole. This edge feature provides an abrupt change in electrical resistance across the lapping guide at a point when lapping should be terminated. And, since this feature can accurately located relative to the flare point, this provides an easily discernable ending point for lapping.