Electric lamp and discharge devices – Cathode ray tube – Screen
Reexamination Certificate
2005-07-19
2005-07-19
Patel, Vip (Department: 2879)
Electric lamp and discharge devices
Cathode ray tube
Screen
C313S487000, C313S493000
Reexamination Certificate
active
06919676
ABSTRACT:
Disclosed is a new and useful discharge lamp for use in applications, such as tanning and technical lighting, and a method of making the same. The discharge lamp includes, inter alia, a vitreous tube having an axial length, a base phosphor coating applied on the interior of the tube along the entire axial length, and at least one phosphor over-coat applied over the base phosphor coating in one or more axial regions of the vitreous tube. The phosphor over-coat is applied to less than the total length of the vitreous tube. In a representative embodiment, the vitreous tube has an outer periphery which is smooth, but in alternate embodiments, a helical groove path is formed therein over at least a portion of the axial length.
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International Search Report from PCT Application No. PCT/US03/18781 dated Nov. 5, 2003.
Kansal Kamlesh C.
Laudano Joseph D.
Sastry Prasad S.
Edwards & Angell LLP
Patel Vip
Silvia David J.
Voltarc Technologies Inc.
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