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:
Jul. 04, 1978
Filed:
Mar. 31, 1977
Applicant:
Inventors:
Chester W Dawson, Basking Ridge, NJ (US);
Robert B Parsons, Livingston, NJ (US);
Douglas M Mattox, O'Hara Township, Allegheny County, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01K / ; B05D / ;
U.S. Cl.
CPC ...
313116 ; 427 28 ; 427 29 ; 427106 ;
Abstract
This invention relates to an incandescent lamp having an improved light diffusing coating carried on the internal surface of the lamp envelope and a method for applying the coating. The coating is a mixture of very finely divided, very low-moisture content powders. The powders substantially comprise a mixture of hydrophilic silica and hydrophobic silica. This coating has been found to be very adherent and substantially free from agglomerations of the silica.