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:
Aug. 05, 2014
Filed:
Dec. 22, 2011
Quang Le, San Jose, CA (US);
David J. Seagle, Morgan Hill, CA (US);
Guangli Liu, Pleasanton, CA (US);
Yongchul Ahn, San Jose, CA (US);
Simon H. Liao, Fremont, CA (US);
Quang Le, San Jose, CA (US);
David J. Seagle, Morgan Hill, CA (US);
Guangli Liu, Pleasanton, CA (US);
Yongchul Ahn, San Jose, CA (US);
Simon H. Liao, Fremont, CA (US);
HGST Netherlands B.V., Amsterdam, NL;
Abstract
A magnetic read sensor having a hard bias structure that extends beyond the back edge of the sensor stack by a controlled, distance that is chosen to maximize both hard bias field and hard bias magnetic coercivity and anisotropy. The hard bias structure has a back edge that is well defined and that has a square corner at its innermost end adjacent to the sensor stack. The magnetic sensor can be constructed by a process that includes a separate making an milling process that is dedicated to defining the back edge of the hard bias structure.