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:
Sep. 21, 2004
Filed:
Jan. 06, 2003
Applicant:
Inventors:
Michael K. Minor, Gibsonia, PA (US);
Timothy J. Klemmer, Sharpsburg, PA (US);
Michael A. Seigler, Pittsburgh, PA (US);
Arthur J. Freeman, Evanston, IL (US);
Assignee:
Quantum Materials Design, Inc., Evanston, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/147 ; G11B 5/31 ;
U.S. Cl.
CPC ...
G11B 5/147 ; G11B 5/31 ;
Abstract
A magnetic recording head includes a write pole having alternating layers of Fe and Co and a return pole magnetically coupled to the write pole. The layers of Fe may have a thickness from about 1.0 angstroms to about 40.0 angstroms and the layers of Co may have a thickness from about 1.0 angstroms to about 20.0 angstroms. The write pole may have a saturation magnetization greater than about 2.45 Tesla. A method for forming a write pole for a magnetic recording head is also disclosed.