The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2025
Filed:
Mar. 19, 2020
Eurokera S.n.c., Chateau Thierry, FR;
Théo Jegorel, Paris, FR;
Erwann Luais, Chateau Thierry, FR;
EUROKERA S.N.C., Chateau Thierry, FR;
Abstract
A glass-ceramic article, includes at least one substrate, such as a plate, made of glass-ceramic, the substrate being coated in at least one zone with at least one stack formed 1) of at least one first layer of metal nitride or of semimetal nitride, the first layer exhibiting a thickness of at least 200 nm and a hardness of at least 14 GPa, and 2) of at least one second layer of metal oxide or of semimetal nitride, the second layer exhibiting a thickness of less than 14 nm and exhibiting a coefficient of friction of less than 0.25, the first and second layers being in contact with each other, the second layer being further from the substrate than the first layer.