Pink lamp and coating therefor
First Claim
1. An electric lamp which exhibits a pink color when energized and which comprises a light transmissive envelope enclosing an electric light source and having a pink coating on a surface of said envelope, said coating containing a chrome tin pink inorganic pigment and a red iron oxide pigment, said coating being free of cadmium and selenium.
3 Assignments
0 Petitions
Accused Products
Abstract
An electric lamp which exhibits a pink color when energized and which comprises a vitreous, light transmissive envelope and enclosing a filament within and a coating on a surface of said envelope. The coating comprises about 42.5 w% calcined kaolin clay; about 42.5 w% synthetic precipitated silica; about 5 w% titanium dioxide; about 7 w% of chrome tin pink sphene; and about 3 w% red iron oxide.
10 Citations
7 Claims
- 1. An electric lamp which exhibits a pink color when energized and which comprises a light transmissive envelope enclosing an electric light source and having a pink coating on a surface of said envelope, said coating containing a chrome tin pink inorganic pigment and a red iron oxide pigment, said coating being free of cadmium and selenium.
- 4. An electric lamp which exhibits a pink color when energized and which comprises a vitreous, light transmissive envelope and enclosing a filament within and a coating on a surface of said envelope, said coating comprising a chrome tin pink inorganic pigment and a red iron oxide pigment.
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6. A composition comprising, in weight percent, about 42.5 w% calcined kaolin clay;
- about 42.5 w% synthetic precipitated silica;
about 5 w% titanium dioxide;
about 7 w% of chrome tin pink sphene; and
about 3 w% red iron oxide.
- about 42.5 w% synthetic precipitated silica;
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7. An electric lamp which exhibits a pink color when energized and which comprises a vitreous, light transmissive envelope and enclosing a filament within and a coating on a surface of said envelope, said coating comprising about 42.5 w% calcined kaolin clay;
- about 42.5 w% synthetic precipitated silica;
about 5 w% titanium dioxide;
about 7 w% of chrome tin pink sphene; and
about 3 w% red iron oxide.
- about 42.5 w% synthetic precipitated silica;
Specification
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- Resources
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Current AssigneeLEDVANCE LLC (MLS Co. Ltd.)
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Original AssigneeOSRAM Sylvania Inc. (Ams-Osram AG)
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InventorsLabant, Cynthia J.
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Primary Examiner(s)Dombroske, George M.
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Assistant Examiner(s)Noori, Max H.
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Application NumberUS08/733,412Time in Patent Office571 DaysField of Search313/112, 313/110, 313/116, 313/635, 106/454, 106/446, 106/457, 106/459US Class Current313/112CPC Class CodesH01J 5/10 on internal surfacesH01J 61/40 by light filters; by colour...H01K 1/32 provided with coatings on t...
