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:
May. 23, 2017
Filed:
Apr. 17, 2014
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Shusaku Akiba, Tokyo, JP;
Shigeki Sawamura, Tokyo, JP;
Suguru Murayama, Tokyo, JP;
Hiroyuki Ohkawa, Tokyo, JP;
Yusuke Kobayashi, Tokyo, JP;
Kazutaka Ono, Tokyo, JP;
Tetsuya Nakashima, Tokyo, JP;
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Abstract
To provide chemically tempered glass which is less likely to break even if scratched. Chemically tempered glass, which comprises, as represented by mole percentage based on the following oxides, from 56 to 72% of SiO, from 8 to 20% of AlO, from 9 to 25% of NaO, from 0 to 2% of KO, and from 0 to 15% of MgO, and which has a surface compressive stress of at least 900 MPa and an internal tensile stress of at most 30 MPa. Glass for chemical tempering, which comprises, as represented by mole percentage based on the following oxides, from 56 to 69% of SiO, from 8 to 16% of AlO, from 9 to 22% of NaO, from 0 to 1% of KO, from 5.5 to 14% of MgO, from 0 to 2% of ZrO, and from 0 to 6% of BO.