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:
Jun. 29, 1999
Filed:
Apr. 19, 1996
Charles J Libby, Winchester, MA (US);
Donald E Yansen, Lexington, MA (US);
Gregory J Athas, Newton, MA (US);
Raymond Hill, Rowley, MA (US);
Russell Mello, Stoneham, MA (US);
Micrion Corporation, Peabody, MA (US);
Abstract
Thin-film magnetic recording heads and systems and processes for manufacturing the same are disclosed. In one embodiment, the invention is understood as a focused particle beam system that includes a pattern recognition element and that employs the pattern recognition element to image and analyze the pole-tip assembly footprint of a recording head and that employs a processor to generate instruction signals that direct a focused particle beam to remove selected portions of the recording head and thereby shape the pole-tip assembly of the recording head. The focused particle beam system provides a precision milling device that can employ the coordinate information to mill selectively the recording head and thereby shape the geometry of the pole-tip assembly footprint, including geometries that have contoured surfaces.