US 12,344,559 B2
Decorative ceramic item
Bernard Bertheville, Sion (CH); and Yann Fallet, Savagnier (CH)
Assigned to The Swatch Group Research and Development Ltd, Marin (CH)
Appl. No. 17/298,860
Filed by The Swatch Group Research and Development Ltd, Marin (CH)
PCT Filed Nov. 11, 2019, PCT No. PCT/EP2019/080898
§ 371(c)(1), (2) Date Jun. 1, 2021,
PCT Pub. No. WO2020/114725, PCT Pub. Date Jun. 11, 2020.
Claims priority of application No. 18211003 (EP), filed on Dec. 7, 2018.
Prior Publication US 2022/0033312 A1, Feb. 3, 2022
Int. Cl. C04B 35/56 (2006.01); G04B 45/00 (2006.01); C04B 35/64 (2006.01)
CPC C04B 35/5607 (2013.01) [G04B 45/0076 (2013.01); C04B 35/64 (2013.01); C04B 2235/3217 (2013.01); C04B 2235/3241 (2013.01); C04B 2235/3246 (2013.01); C04B 2235/3843 (2013.01); C04B 2235/3847 (2013.01); C04B 2235/80 (2013.01); C04B 2235/9661 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A decorative item, comprising:
a ceramic material comprising (i) Mo2C in range of from 70 to 85 vol. %
and (ii) Al2O3 in a range of from 15 to 30 vol. %,
wherein the item has a hardness HV30 in a range of from greater than 1319 to 1800 and a toughness KiC in a range of from 3.5 to 8.5 MPa·m1/2.