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:
Oct. 23, 2007
Filed:
Apr. 30, 2004
Kosuke Fujiwara, Osaka, JP;
Akihiro Koyama, Osaka, JP;
Kosuke Fujiwara, Osaka, JP;
Akihiro Koyama, Osaka, JP;
Nippon Sheet Glass Company, Limited, Tokyo, JP;
Abstract
The present invention provides a glass flake that is substantially free of boron trioxide (BO), barium oxide (BaO), zinc oxide (ZnO), and fluorine (F) and has sufficient heat resistance and good formability for glass flake. The glass flake of the present invention includes a glass composition that contains the following components, expressed in mol %; 50≦SiO≦65; 4≦AlO<12; 5≦SrO≦25; 10<(MgO+SrO)≦30; 20≦(MgO+CaO+SrO)≦45; and 0<(LiO+NaO+KO)<2; wherein the glass composition is substantially free of BO, BaO, ZnO, and F. This glass flake is useful for resin compositions, paints, cosmetics, ink compositions, and the like.