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. 06, 2011
Filed:
Dec. 30, 2004
Applicant:
John W. Pettit, Rockville, MD (US);
Inventor:
John W. Pettit, Rockville, MD (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 31/111 (2006.01);
U.S. Cl.
CPC ...
Abstract
A power switching device includes an optically controlled component using a semiconducting carbon nanotube. An optical signal transmitted over an optical fiber controls the conductivity of the nanotube. The nanotube transmits a signal controlled by the optical signal to a wide-bandgap semiconductor power switch, which switches the power.