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:
May. 21, 2013
Filed:
Aug. 18, 2008
Robert G. Biskeborn, Hollister, CA (US);
Calvin S. Lo, Saratoga, CA (US);
Gary M. Decad, Palo Alto, CA (US);
Cherngye Hwang, San Jose, CA (US);
Robert G. Biskeborn, Hollister, CA (US);
Calvin S. Lo, Saratoga, CA (US);
Gary M. Decad, Palo Alto, CA (US);
Cherngye Hwang, San Jose, CA (US);
International Busines Machines Corporation, Armonk, NY (US);
Abstract
A method for encapsulating a magnetic recording head including coating at least a portion of a magnetic recording head containing a recording gap with a first layer of at least one coating material, including silicon nitride, the first layer of at least one coating material having a first removal rate, coating at least a portion of the magnetic recording head containing a recording gap and coated with the first layer of at least one coating material with a second layer of at least one coating material, including aluminum oxide, the second layer of at least one coating material having a second removal rate higher than the first removal rate, and removing at least a portion of the second layer of at least one coating material via a removal process, including chemical-mechanical polishing, lapping, or vacuum processing to at least partially planarize the surface of the recording gap.