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:
Dec. 19, 1989
Filed:
Jun. 14, 1988
Applicant:
Inventors:
Assignee:
Nippon Electric Glass Company, Limited, Otsu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04B / ; E04C / ; B22B / ;
U.S. Cl.
CPC ...
52306 ; 52311 ; 428426 ; 428428 ;
Abstract
A translucent glass brick for use in a building wall as a lighting wall is made of a translucent opal glass in a form of a hollow glass block. The opal glass has an opal appearance and a mean light transmittance of 20-80%, in a glass thickness of 10 mm, for wavelength over a range of 400-700 nm. The opal glass is a lime and chlorine free glass with sodium sulfate and sodium sulfide fine particles dispersed therein for diffusing light transmitting through the glass. The opal glass essentially consists, by weight, of SiO.sub.2 60.0-70.0%, Al.sub.2 O.sub.3 7.0-11.0%, B.sub.2 O.sub.3 1.0-5.0%, BaO 0-3.0%, ZnO 1.0-5.0%, Na.sub.2 O 15.0-21.0%, SO.sub.3 0.3-1.0%, and F.sub.2 0-2.0%.