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:
Dec. 30, 2003
Filed:
Oct. 21, 2002
Shunsuke Ono, Takatsuki, JP;
Masahiro Yamamoto, Takatsuki, JP;
Minoru Ozasa, Kyoto, JP;
Masato Yoshida, Takatsuki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka-fu, JP;
Abstract
Disclosed is a method for operating a high-pressure discharge lamp, a lighting apparatus, and a high-pressure discharge lamp apparatus each capable of operating the lamp at a power lower than the rated power without imposing excessive burden on the lighting circuit. To this end, when a detected lamp voltage (Vla) is below a predetermined level (S102: No), the current is supplied at a lower frequency than the rated frequency for a predetermined time period (S103 and S104 ).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile