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:
Nov. 14, 1989
Filed:
Apr. 06, 1987
Applicant:
Inventors:
Andre Hecq, Nalinnes, BE;
Jean-Francois Thomas, Ottignies, BE;
Assignee:
Glaverbel, Brussels, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C / ;
U.S. Cl.
CPC ...
428 38 ; 428141 ; 428142 ;
Abstract
Light transmitting glass having at least one surface area which is matted by surface pits, including an etched surface area having a population of merging or contiguous surface pits of polyhedral form, each pit having a small area so that at least 30% of visible light normally incident on the at least one surface is diffusely transmitted through the surface and the at least one surface having a total luminous transmittance of normally incident visible light of not less than TT-10 where TT is the total luminous transmittance through the same surface prior to etching expressed as a percentage of the total incident visible light.