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:
Sep. 13, 2011
Filed:
Oct. 31, 2006
Hiromitsu Seto, Tokyo, JP;
Akihiro Koyama, Tokyo, JP;
Yukihito Nagashima, Tokyo, JP;
Nippon Sheet Glass Company, Limited, Tokyo, JP;
Abstract
The present invention provides a glass article using a glass composition including a base glass composition and colorants. The base glass composition includes, expressed in mass %: 65 to 80% of SiO; 0 to 5% of AlO; 0 to 10% of MgO; 0 to 15% of CaO; 5 to 15% of MgO+CaO; 10 to 18% of NaO; 0 to 5% of KO; 10 to 20% of NaO+KO; and 0 to 5% of BO, and the colorants consist essentially of, expressed in mass %: 0.6% to 1.0% of T-FeO; 0.026 to 0.8% of TiO; 0 to 2.0% of CeO; 0.01 to 0.03% of CoO; 0 to 0.0008% of Se; and 0.06 to 0.20% of NiO. The glass article has a grayish color tone, and has a visible light transmittance in a range of 15% to 40%, which is measured with the illuminant A at a thickness of 3.1 mm.