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:
Jul. 20, 2004
Filed:
Aug. 09, 2002
Applicant:
Inventors:
Anne Berthereau, Challes les Eaux, FR;
Dominique Sachot, Ozoire la Ferriere, FR;
Assignee:
Saint-Gobain Glass France, Courbevoie, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/087 ;
U.S. Cl.
CPC ...
C03C 3/087 ;
Abstract
The invention concerns a grey glass composition of the soda-lime type having a global light transmission under an illuminant A (T ) more than 15% for a glass thickness equal to 4.85 mm, said composition comprising colouring agents as follows in the following weight percentage limits: Fe O : 0.25-0.65%, preferably 0.3-0.6% and more preferably still 0.3-0.4%; CoO: 150-250 ppm and preferably>185 ppm; NiO: 650-1000 ppm; Se<5 ppm.