US 11,808,459 B2
Glass-ceramic plate comprising a liquid-retaining bead
Barbara Brudieu, Paris (FR); and Thibault Guedon, Paris (FR)
Assigned to EUROKERA S.N.C., Château Thierry (FR)
Appl. No. 16/651,805
Filed by EUROKERA S.N.C., Chateau Thierry (FR)
PCT Filed Sep. 28, 2018, PCT No. PCT/EP2018/076524
§ 371(c)(1), (2) Date Mar. 27, 2020,
PCT Pub. No. WO2019/063821, PCT Pub. Date Apr. 4, 2019.
Claims priority of application No. 1759082 (FR), filed on Sep. 29, 2017.
Prior Publication US 2020/0248908 A1, Aug. 6, 2020
Int. Cl. B32B 15/04 (2006.01); B32B 17/06 (2006.01); F24C 15/10 (2006.01); C03C 17/30 (2006.01); F24C 7/08 (2006.01); H05B 3/74 (2006.01)
CPC F24C 15/10 (2013.01) [C03C 17/30 (2013.01); F24C 7/083 (2013.01); H05B 3/74 (2013.01); C03C 2217/76 (2013.01); C03C 2217/77 (2013.01); C03C 2218/151 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A glass-ceramic plate for a cooking device comprising:
a first main face configured to be in contact with liquids when the plate is in the process of being used, a second main face and an edge,
a liquid-retaining bead fastened to and in contact with said first main face, wherein said retaining bead:
surrounds at least one region of said first main face so as to form a liquid-retaining reservoir, and
comprises at least two hydrophobic sub-beads inscribed within one another and separated by at least one hydrophilic zone, a width of the at least one hydrophilic zone between two consecutive sub-beads is at least greater than 500 μm and less than a threshold value, said threshold value being defined so that, when a liquid flows in the hydrophilic zone, a variation between (a) a retention time or volume of said liquid before said liquid overflows from the hydrophilic zone, and (b) a retention time or volume of a same liquid before said same liquid overflows from a hydrophilic zone having a width greater than said value, is less than 5%.