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:
Jan. 27, 2009
Filed:
May. 28, 2004
Applicant:
Jyh-shuey Jerry Lo, San Jose, CA (US);
Inventor:
Jyh-Shuey Jerry Lo, San Jose, CA (US);
Assignee:
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/127 (2006.01);
U.S. Cl.
CPC ...
Abstract
Two trim/notch milling steps are used to refine the track width that is defined by the second pole piece tip of a write head. The second milling step uses feedback gained after the first milling step to refine the PB (pole Pbottom width) dimension. A final milling step may be conducted after receiving feedback from the result of the second trim/notch milling step.