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:
Jan. 05, 2010
Filed:
Feb. 27, 2004
Kosuke Fujiwara, Minato-ku, JP;
Makoto Umino, Minato-ku, JP;
Akihiro Koyama, Minato-ku, JP;
Haruki Niida, Minato-ku, JP;
Kosuke Fujiwara, Minato-ku, JP;
Makoto Umino, Minato-ku, JP;
Akihiro Koyama, Minato-ku, JP;
Haruki Niida, Minato-ku, JP;
Nippon Sheet Glass Company, Limited, Tokyo, JP;
Abstract
The present invention provides a glass flake having sufficiently high visible-light absorptivity. The glass flake of the present invention includes a glass composition that contains a transition metal oxide such as an iron oxide and that allows the glass flake to have a visible-light transmittance of 85% or lower measured with an A light source when the glass flake has a thickness of 15 μm. In this glass composition, it is preferable that the content of FeO(T−FeO) in terms of the total iron satisfies the following formula, expressed in mass %: 10<T−FeO≦50.