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. 10, 2002
Filed:
Oct. 13, 2000
Lee K. Dorius, San Jose, CA (US);
Ullal Vasant Nayak, San Jose, CA (US);
Robert Nolan Payne, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention provides an optimized pad design for a slider that minimizes the effect of mask alignment tolerances to allow for a more consistent N58 pad area and hence a more controllable burnish rate of the protruding pad. The protruding pad includes a first portion and a second portion formed by processing material to form the first and second portion wherein at least a quantity of the first portion comprises a first material type and the second portion comprises a second material type, the protruding pad further comprising a boundary interface separating the first material type from the second material type, the boundary interface having a position on the first portion that is dependent upon an alignment tolerance for the processing and that defines a surface area for the material of the second type, wherein the surface area of the material of the second type is negligibly affected by the position of the boundary interface.