US 12,319,611 B2
Water-repellent-film-attached glass article and method for manufacturing same
Patricia Elena McNeil, Los Angeles, CA (US); and Yoko Watanabe, Hyogo (JP)
Assigned to NIPPON SHEET GLASS COMPANY, LIMITED, Tokyo (JP)
Appl. No. 18/015,693
Filed by Nippon Sheet Glass Company, Limited, Tokyo (JP)
PCT Filed Jul. 13, 2021, PCT No. PCT/JP2021/026351
§ 371(c)(1), (2) Date Jan. 11, 2023,
PCT Pub. No. WO2022/014607, PCT Pub. Date Jan. 20, 2022.
Claims priority of application No. 2020-120945 (JP), filed on Jul. 14, 2020.
Prior Publication US 2023/0192538 A1, Jun. 22, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C03C 17/00 (2006.01); C03C 17/25 (2006.01); C03C 17/32 (2006.01)
CPC C03C 17/25 (2013.01) [C03C 17/008 (2013.01); C03C 17/326 (2013.01); C03C 2217/228 (2013.01); C03C 2217/76 (2013.01); C03C 2217/77 (2013.01); C03C 2218/31 (2013.01); C03C 2218/32 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A water-repellent-film-attached glass article comprising:
a glass substrate; and
a water-repellent film on the glass substrate, wherein
the water-repellent film includes cerium oxide as a main component of the water-repellent film,
the water-repellent film has a surface on which the cerium oxide is exposed,
a porosity of the water-repellent film is 40% or more,
a visible reflectance for visible light incident on the glass article from a side on which the water-repellent film is arranged is 10% or less,
a contact angle of water on the surface of the water-repellent film is 75° or greater, and
the contact angle is 75° or greater after the glass article is exposed to a thermal treatment at 760° C. for 4 minutes.