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:
May. 13, 2008
Filed:
Feb. 22, 2005
Masashi Sekine, Torrance, CA (US);
Thomas J Ribarich, Laguna Beach, CA (US);
Masashi Sekine, Torrance, CA (US);
Thomas J Ribarich, Laguna Beach, CA (US);
International Rectifier Corporation, El Segundo, CA (US);
Abstract
A lamp ballast circuit for driving, e.g. four flourescent lamps with a ballast control IC such as the IR2167 Ballast Control IC. The circuit includes a lamp replacement detection circuit for detecting insertion of a lamp, and in response, controlling the ballast control IC to initiate automatic restart for of the control IC for proper firing of the lamps, including the newly inserted lamp.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile