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:
Apr. 07, 2020
Filed:
Mar. 09, 2017
The Swatch Group Research and Development Ltd, Marin, CH;
Empa, Swiss Federal Laboratories for Materials Testing and Research, Duebendorf, CH;
Henning Luebbe, Bienne, CH;
Roman Kubrin, Zurich, CH;
Gurdial Blugan, Duebendorf, CH;
Jakob Kuebler, Herdern, CH;
Stewes Bourban, Chabrey, CH;
Arnaud Actis-Datta, Bassecourt, CH;
The Swatch Group Research and Development Ltd, Marin, CH;
EMPA, Swiss Federal Laboratories for Materials Testing and Research, Duebendorf, CH;
Abstract
A polycrystalline ceramic solely formed based on alumina, on chromium oxide and on magnesium oxide, where the polycrystalline ceramic contains between 0.8% and 1.2% of chromium oxide by total weight of the polycrystalline ceramic and between 0.03% and 0.09% of magnesium oxide by total weight of the polycrystalline ceramic, making it possible to obtain a red ceramic with a toughness (K) at least equal to 2.8 MPa·m.