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:
Jul. 06, 2010
Filed:
Apr. 25, 2006
Christian Rene Bonhote, San Jose, CA (US);
Quang Le, San Jose, CA (US);
Jui-lung LI, San Jose, CA (US);
Scott Arthur Macdonald, San Jose, CA (US);
Christian Rene Bonhote, San Jose, CA (US);
Quang Le, San Jose, CA (US);
Jui-Lung Li, San Jose, CA (US);
Scott Arthur MacDonald, San Jose, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
A method and structure for reducing corrosion during the manufacture of perpendicular write heads is disclosed. Auxiliary pole structures (otherwise known as trailing shields and wrap around shields) are susceptible to corrosion due to their iron containing composition and small dimensions. The impact of corrosion can be reduced by utilizing a gap material comprising an upper surface of noble metals, which extends from underneath the auxiliary pole and is exposed to the same corrosive environment during processing. The area of the exposed gap material is limited to optimize corrosion protection.