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:
Apr. 07, 2009
Filed:
Aug. 01, 2003
Rajasingh Israel, Westlake, OH (US);
Ashfaqui Islam Chowdhury, Mayfield Hts., OH (US);
Tianji Zhao, Mayfield Hts., OH (US);
Rajasingh Israel, Westlake, OH (US);
Ashfaqui Islam Chowdhury, Mayfield Hts., OH (US);
Tianji Zhao, Mayfield Hts., OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
A reflector lamp has a generally parabolic shaped housing () with an interior surface coated with a layer () of silver having a protective layer () of a stable protective material, such as silica, disposed thereon. The thickness of the protective layer is selected such that at least one of the following relationships is satisfied: a color correction temperature of the lamp is no less than about 60 K below that of the light source, and a % reflectance of the reflective interior surface is no less than about 3% below that of an equivalent reflective interior surface without the protective layer.