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:
Nov. 01, 2011
Filed:
Oct. 02, 2008
Christian Rene Bonhote, San Jose, CA (US);
Quang Le, San Jose, CA (US);
Ihavin Sinha, New Westminster, CA;
Christian Rene Bonhote, San Jose, CA (US);
Quang Le, San Jose, CA (US);
Ihavin Sinha, New Westminster, CA;
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
Methods for fabricating thin film magnetic head coil structures are disclosed. The methods disclose deposition of a first thick seed layer, followed by deposition of an ultra-thin second seed layer. Coil structures having sub-micron pitch and high aspect ratios are deposited on the second ultra-thin seed layer, which is removed from between the coil windings via an isotropic etch process such as wet etching or RIE. Subsequent to selective removal of the ultra-thin second seed layer, the first thick seed layer is utilized to deposit pole and backgap structures, eliminating the need to deposit (and remove) a subsequent seed layer on the coil structure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile