US 12,221,378 B2
Glass for medicine container and glass tube for medicine container
Satoshi Arai, Shiga (JP)
Assigned to NIPPON ELECTRIC GLASS CO., LTD., Shiga (JP)
Filed by Nippon Electric Glass Co., Ltd., Shiga (JP)
Filed on Sep. 28, 2023, as Appl. No. 18/374,248.
Application 18/374,248 is a continuation of application No. 18/071,129, filed on Nov. 29, 2022, granted, now 11,807,575.
Application 18/071,129 is a continuation of application No. 16/648,878, granted, now 11,542,191, issued on Jan. 3, 2023, previously published as PCT/JP2018/038440, filed on Oct. 16, 2018.
Claims priority of application No. 2017-203699 (JP), filed on Oct. 20, 2017.
Prior Publication US 2024/0018033 A1, Jan. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 15/04 (2006.01); B32B 17/06 (2006.01); C03C 3/085 (2006.01); C03C 3/091 (2006.01); C03C 3/11 (2006.01); C03C 4/02 (2006.01); C03C 4/18 (2006.01)
CPC C03C 3/11 (2013.01) [C03C 3/085 (2013.01); C03C 3/091 (2013.01); C03C 4/02 (2013.01); C03C 4/18 (2013.01); C03C 2204/00 (2013.01)] 18 Claims
 
1. A glass for a pharmaceutical container, which comprises as a glass composition, in terms of mass %, 67% to 71.77% of SiO2, more than 4% to 7% of Al2O3, 7% to 14% of B203, 0% to 8% of Na2O, 6% to 9% of Na2O+K2O, 0.8% to 2% of CaO+BaO, 0.5% to less than 2% of Fe2O3, 0.1% to 2% of BaO, and 1% to 5% of TiO2, and satisfies a relationship of CaO/BaO≤0.5.