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:
Apr. 17, 2001
Filed:
Aug. 12, 1999
Applicant:
Inventors:
Joachim Bretschneider, Weiden, DE;
Hubert Drexler, Amberg, DE;
Assignee:
Flachglas Aktiengesellschaft, Fuerth, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/087 ;
U.S. Cl.
CPC ...
C03C 3/087 ;
Abstract
A neutral-colored soda-lime-silicate glass with high light transmission in the visible region. The glass has a basic composition which contains at least the following constituents: SiO,, 66-75 weight %; Na,O, 10-20 weight %; CaO, 5-15 weight %; MgO, 0-6 weight %; Al,O,, 0-5 weight %; and K,O, 0-5 weight %; and incorporates a colorant portion comprising the following constituents: Co, 0.1-1 ppm; Fe,O,, ≦0.03 weight % (total iron content); and FeO/Fe,O,, >0.4. The glass possesses a light transmittance (illuminant D 65 according to DIN 67 507) of at least 89% at a reference thickness of 4 mm.