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:
Aug. 25, 1998
Filed:
Sep. 07, 1995
Applicant:
Inventor:
James E Shaw, Cedar Rapids, IA (US);
Assignee:
Rockwell International, Costa Mesa, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313489 ; 313485 ; 313493 ; 313486 ;
Abstract
A fluorescent lamp is provided which is resistant to lumen depreciation. The fluorescent lamp includes a tube constructed of an ultraviolet (UV) radiation transmissive material. A gas inside of the tube produces UV radiation in response to a stimulus. Phosphor particles in a phosphor particle containing coating adhered to an outer surface of the tube absorb UV radiation produced by the gas inside of the tube and producing visible light in response.