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:
Mar. 24, 2015

Filed:

Aug. 04, 2010
Applicants:

Douglas Hofmann, Hebron, OH (US);

Peter Mcginnis, Gahanna, OH (US);

John Wingert, Granville, OH (US);

Anne Berthereau, Columbus, OH (US);

Inventors:

Douglas Hofmann, Hebron, OH (US);

Peter McGinnis, Gahanna, OH (US);

John Wingert, Granville, OH (US);

Anne Berthereau, Columbus, OH (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 13/00 (2006.01); C03C 3/087 (2006.01); C03C 3/112 (2006.01); C03C 3/091 (2006.01);
U.S. Cl.
CPC ...
C03C 3/112 (2013.01); C03C 3/087 (2013.01); C03C 3/091 (2013.01); C03C 13/00 (2013.01);
Abstract

An R-glass composition including SiOin an amount from 59.0 to 64.5% by weight, AlOin an amount from 14.5 to 20.5% by weight, CaO in an amount from 11.0 to 16.0% by weight, MgO in an amount from 5.5 to 11.5% by weight, Na2O in N an amount from 0.0 to 4.0% by weight, TiOin an amount from 0.0 to 2.0% by weight, FeOin an amount from 0.0 to 1.0% by weight, BOin an amount from 0.0 to about 3.0% by weight, KO, FeO, ZrO, and Fluorine, each of which is present in an amount from 0.0 to about 1.0% by weight, and SrO and ZnO, each of which is present in an amount from 0.0 to about 2.0% by weight. In exemplary embodiments, the glass composition does not contain lithium or boron.


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