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:
Jun. 11, 2013
Filed:
Dec. 21, 2009
Ashfaqul Islam Chowdhury, Broadview Heights, OH (US);
Leonard Edward Hoegler, Solon, OH (US);
William Robert Wright, Russell, OH (US);
Ashfaqul Islam Chowdhury, Broadview Heights, OH (US);
Leonard Edward Hoegler, Solon, OH (US);
William Robert Wright, Russell, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
The disclosure provides a light-transmissive glass halogen filament tube with a filament light source having a coil concentricity ratio of not greater than 20% disposed therein, the filament tube having a multi-layer optical interference coating deposited on the outer surface thereof that transmits visible radiation from about 400-750 nm and reflects infra red radiation from about 800-2500 nm back to the filament for re-absorption, the coated filament tube exhibiting an LPW gain of at least 26%.