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:
May. 18, 2004
Filed:
Sep. 26, 2002
Applicant:
Inventor:
Uwe Kantim, Niederstotzingen, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B44C 1/17 ; C04B 4/145 ; B32B 3/126 ; F21V 7/22 ; H01J 6/140 ;
U.S. Cl.
CPC ...
B44C 1/17 ; C04B 4/145 ; B32B 3/126 ; F21V 7/22 ; H01J 6/140 ;
Abstract
The invention relates to a method for producing an electric lamp, in particular the application of an optical shield ( ) to a cylindrical part of the lamp vessel ( ). According to the invention, the optical shield ( ) is applied to the lamp vessel ( ) with the aid of at least two prefabricated opaque wax films ( ) which are provided with a colored layer and are joined in such a way that the width of the transparent window can be set independently of tolerances of the diameter of the lamp vessel ( ). The wax of the films ( ) is vaporized by a heat treatment such that only the heat resistant colored layer remains on the lamp vessel ( ).