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:
May. 17, 2005
Filed:
Mar. 27, 2002
Bill W. Crue, Jr., San Jose, CA (US);
Zhupei Shi, San Jose, CA (US);
Lijun Tong, Fremont, CA (US);
Carlos Corona, Pleasanton, CA (US);
Bill W. Crue, Jr., San Jose, CA (US);
Zhupei Shi, San Jose, CA (US);
Lijun Tong, Fremont, CA (US);
Carlos Corona, Pleasanton, CA (US);
Western Digital Fremont, Inc., Lake Forest, CA (US);
Abstract
A compact write element includes a conductive shield layer, an insulating write gap layer, a pole pedestal, a coil, and a conductive pole layer, and, in some embodiments also includes a backgap. The pole pedestal and the coil, and, in some embodiments the backgap, constitute a self-aligned array of components that may be formed in a single masking operation to allow for very tight tolerances between the components for a shorter yoke length. The pole layer is substantially flat and parallel to the conductive shield layer, providing for a shorter stack height. Also, a compact MR read/write head includes such a write element and a magnetic data storage and retrieval system includes the compact MR read/write head having such a write element.