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:
Feb. 01, 1994
Filed:
Dec. 29, 1992
Mao-Min Chen, San Jose, CA (US);
Kochan Ju, San Jose, CA (US);
Rodney E Lee, Prunedale, CA (US);
Ching Tsang, Sunnyvale, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for fabricating a thin film magnetic head assembly including the procedure of hardening a portion of the upper pole-tip photoresist mask to create a planarizing stitching pedestal in the region where the upper pole-tip overlaps with the upper pole-yoke. The upper pole assembly is deposited in two steps to create a stitched pole consisting of an upper pole-tip joined to an upper pole-yoke element at the stitching pedestal. The method reduces process complexity by eliminating masking steps and also eliminates the usual close alignment requirements for upper insulation and pole-yoke deposition procedures, thereby improving process yield.