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. 11, 2007
Filed:
Jan. 25, 2005
Applicants:
Cherng Chyi Han, San Jose, CA (US);
Mao-min Chen, San Jose, CA (US);
Pokang Wang, San Jose, CA (US);
Yimin Guo, San Jose, CA (US);
Inventors:
Cherng Chyi Han, San Jose, CA (US);
Mao-Min Chen, San Jose, CA (US);
Pokang Wang, San Jose, CA (US);
Yimin Guo, San Jose, CA (US);
Assignee:
Headway Technologies, Inc., Milpitas, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/31 (2006.01); G11B 5/17 (2006.01); G11B 5/127 (2006.01); G11B 5/23 (2006.01);
U.S. Cl.
CPC ...
Abstract
One of the major requirements for higher frequency extendability is to reduce yoke length and inductance in order to have fast saturation. This has been accomplished by using a design that provides a cavity in the lower pole piece inside which is located at least two coils, one on top of the other. A process for manufacturing the device is also described.