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. 14, 2010
Filed:
Dec. 08, 2008
Applicants:
Peter J. Hopper, San Jose, CA (US);
William French, San Jose, CA (US);
Kyuwoon Hwang, Palo Alto, CA (US);
Inventors:
Peter J. Hopper, San Jose, CA (US);
William French, San Jose, CA (US);
Kyuwoon Hwang, Palo Alto, CA (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01F 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an on-chip transformer, external electromagnetic field influences are reduced by providing an isolation transformer having primary and secondary windings with aconfiguration so that current induced by an external magnetic field is nulled.