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Title:
ALKALI-FREE GLASS AND GLASS PLATE
Document Type and Number:
WIPO Patent Application WO/2020/209271
Kind Code:
A1
Abstract:
By mole percent of oxides, this alkali-free glass contains 57-70% SiO2, 5-15% Al2O3, 15-24% B2O3, 0.2-10% MgO, 0.1-7% CaO, 0.1-2.5% SrO, 0-10% BaO and 0-0.1% ZnO, and the value of expression (A) represented by [Al2O3]/[B2O3] is greater than 0.35 and less than or equal to 1.4.

Inventors:
MATSUO YUSAKU (JP)
ONO KAZUTAKA (JP)
Application Number:
PCT/JP2020/015751
Publication Date:
October 15, 2020
Filing Date:
April 07, 2020
Export Citation:
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Assignee:
AGC INC (JP)
International Classes:
C03C3/091; B60J1/00; C03B17/06; C03B18/02; C03B32/00; C03C3/064; C03C3/093; C03C3/095; C03C3/097; C03C3/118; H01Q1/38; H05K1/03
Domestic Patent References:
WO2011136027A12011-11-03
WO2013005402A12013-01-10
WO2018051793A12018-03-22
WO2019004434A12019-01-03
Foreign References:
JPH04325436A1992-11-13
JPH01201041A1989-08-14
JP2005097090A2005-04-14
JP2011256060A2011-12-22
JPH05163024A1993-06-29
JP2019076423A2019-05-23
JP2019120828A2019-07-22
JP2019214690A2019-12-19
Other References:
See also references of EP 3954663A4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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