Invention Grant
- Patent Title: Alkali-free glass plate
-
Application No.: US17282480Application Date: 2019-09-25
-
Publication No.: US12077471B2Publication Date: 2024-09-03
- Inventor: Atsushi Mushiake , Atsuki Saito
- Applicant: Nippon Electric Glass Co., Ltd.
- Applicant Address: JP Shiga
- Assignee: NIPPON ELECTRIC GLASS CO., LTD.
- Current Assignee: NIPPON ELECTRIC GLASS CO., LTD.
- Current Assignee Address: JP Shiga
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP 18189873 2018.10.05
- International Application: PCT/JP2019/037489 2019.09.25
- International Announcement: WO2020/071193A 2020.04.09
- Date entered country: 2021-04-02
- Main IPC: C03C3/093
- IPC: C03C3/093 ; C03C3/083 ; C03C3/085 ; C03C3/087 ; C03C3/091 ; C03C3/095

Abstract:
The present invention provides an alkali-free glass sheet, including as a glass composition, in terms of mol %, 55% to 80% of SiO2, 10% to 25% of Al2O3, 0% to 4% of B2O3, 0% to 30% of MgO, 0% to 25% of CaO, 0% to 15% of SrO, 0% to 15% of BaO, 0% to 5% of ZnO, and 0% to less than 1.0% of Y2O3+La2O3, being substantially free of an alkali metal oxide, and having a strain point of 750° C. or more.
Public/Granted literature
- US20210380468A1 ALKALI-FREE GLASS PLATE Public/Granted day:2021-12-09
Information query