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. 31, 1993
Filed:
Dec. 13, 1991
Applicant:
Inventors:
Johannes M Van Esdonk, Eindhoven, NL;
Marcel Niestadt, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427554 ; 264 22 ; 313474 ; 427 68 ; 445 24 ;
Abstract
To reduce reflection at a surface of a cathode ray tube display window, the surface is provided with a pattern of irregularities formed by ultraviolet laser radiation. Preferably the inside surface of the display window of the cathode ray tube is treated with the pattern of irregularities followed by a phosphor pattern over the treated surface. In one embodiment, a transmission grating is used to pass ultraviolet radiation to form the irregularities.