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. 18, 2012
Filed:
May. 14, 2010
Applicant:
Koji Sugiura, Naogya, JP;
Inventor:
Koji Sugiura, Naogya, JP;
Assignee:
Toagosei Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 25/45 (2006.01); C03C 8/24 (2006.01); C04B 35/447 (2006.01);
U.S. Cl.
CPC ...
Abstract
An object of the present invention is to provide a low thermal expansion filler for low thermal expansion glasses which has a low coefficient of thermal expansion and exhibits superior flowability in a molten state, and a glass composition containing the same. It has been found that a low thermal expansion filler composed of a hexagonal zirconium phosphate powder where a specific particle size of 0.8 μm to 50 μm is 95% or more on a volume basis has excellent low thermal expansion property and excellent flowability, and a glass composition containing the filler has been accomplished.