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:
Feb. 01, 2000
Filed:
Sep. 23, 1998
Frank Stageberg, Edina, MN (US);
Kenneth P Ash, Chanhassen, MN (US);
Feng Wang, Lakeville, MN (US);
Sara L Gordon, Minneapolis, MN (US);
Wojciech Worwag, Chanhassen, MN (US);
Katrina Rook, Orangeburg, NY (US);
Kevin Welsh, Plymouth, MN (US);
Seagate Technology, Inc., Scotts Valley, CA (US);
Abstract
A first layer of magnetic material is deposited onto a substrate to form a bottom pole of an inductive transducer. A second layer of magnetic material is plated on the first layer of magnetic material within the pole tip region to form a bottom pole extension. A layer of non-magnetic metal is then plated on the bottom pole extension to form the gap. A third layer of magnetic material is then plated on the gap layer to form the top pole extension. In one form of the invention, a mask is employed to define a good zero throat level surface to the pole tip region.