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:
Mar. 22, 2016
Filed:
Nov. 22, 2013
Applicant:
Western Digital Technologies, Inc., Irvine, CA (US);
Inventors:
Kurt C. Ruthe, Bangkok, TH;
Sataporn Sittisak, Pathumtani, TH;
Assignee:
Western Digital Technologies, Inc., Irvine, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/127 (2006.01); G11B 5/133 (2006.01); G11B 5/147 (2006.01);
U.S. Cl.
CPC ...
G11B 5/127 (2013.01); G11B 5/1272 (2013.01); G11B 5/1335 (2013.01); G11B 5/1475 (2013.01);
Abstract
A dual/beam FIB/SEM system and method for operating such a system are provided. A micrograph of a throat height view of a magnetic writer is obtained through iterative milling and repeated evaluation of the leading bevel angle or pole length. In some cases, the milling depth for a next iteration may be modified based on evaluation of the leading bevel angles of the current iteration.