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. 22, 1998
Filed:
Jul. 11, 1997
Edward Nashed Boulos, Troy, MI (US);
James Victor Jones, Toledo, OH (US);
Ford Motor Company, Dearborn, MI (US);
Abstract
The invention is a soda-lime-silica glass composition which is blue in color and having improved UV and IR absorption. The spectral properties of the blue glass at a 4.0 mm. Thickness include: 477-494 dominant wavelength and 6-40% purity of excitation. The blue glass composition, by weight, comprises a base glass composition of: 68 to 75% SiO.sub.2, 10 to 18% Na.sub.2 O, 5 to 15% CaO, 0 to 10% MgO, 0 to 5% Al.sub.2 O.sub.3, and 0 to 5% K.sub.2 O, where CaO+MgO is 6 to 15% and Na.sub.2 O+K.sub.2 0 is 10 to 20%; and colorants consisting essentially of: 0.4 to 2.0% total iron oxide as Fe.sub.2 O.sub.3, 0.15 to 2.00% manganese oxide as MnO.sub.2 ; 0.005 to 0.025% cobalt oxide as Co, and 0 to 1.00% titanium oxide as TiO.sub.2. The glass is useful for automotive or architectural applications. It preferably is made by a nitrite-free method which may desirably involve the use of a reducing agent during melting operations.