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:
Dec. 15, 2009
Filed:
Apr. 10, 2008
Applicants:
Chao-peng Chen, Fremont, CA (US);
Jei-wei Chang, Cupertino, CA (US);
Xiaohong Yang, Santa Clara, CA (US);
Inventors:
Chao-Peng Chen, Fremont, CA (US);
Jei-Wei Chang, Cupertino, CA (US);
Xiaohong Yang, Santa Clara, CA (US);
Assignee:
Headway Technologies, Inc., Milpitas, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/147 (2006.01); G03C 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A write pole for vertical magnetic recording is described. It includes a trapezoidal prism of high magnetic moment material, having inwardly sloping sidewalls. Its parallel surfaces are between about 0.1 and 0.3 microns apart and the sidewalls slope in the range of 15.5 to 60 degrees relative to vertical.