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.

Date of Patent:
Nov. 24, 2009

Filed:

Feb. 23, 2005
Applicants:

Anthony V. Longobardo, Grove, MI (US);

Leonid Landa, Grosse Ile, MI (US);

Ksenia A. Landa, Grosse Ile, MI (US);

Scott V. Thomsen, South Lyon, MI (US);

Inventors:

Anthony V. Longobardo, Grove, MI (US);

Leonid Landa, Grosse Ile, MI (US);

Ksenia A. Landa, Grosse Ile, MI (US);

Scott V. Thomsen, South Lyon, MI (US);

Assignee:

Guardian Industries Corp., Auburn Hills, MI (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/095 (2006.01); C03C 3/087 (2006.01);
U.S. Cl.
CPC ...
Abstract

A grey glass composition employing in its colorant portion, in certain example embodiments, iron, cobalt, nickel, and at least one of erbium and titanium. The use of erbium and/or titanium has been found to improve coloration of the grey glass, and improve tunability of the same. In certain example embodiments, the ratio of cobalt oxide to nickel oxide is from 0.22 to 0.30 in order to achieve desired coloration in certain example embodiments.


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