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:
Jan. 17, 2020
Saint-gobain Centre DE Recherches ET D'etudes Europeen, Courbevoie, FR;
Emmanuel Nonnet, Saint Saturnin lès Avignon, FR;
SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEAN, Courbevoie, FR;
Abstract
Sintered bead that has a crystalline composition, as percentages by weight based on the total weight of the crystalline phases: zircon<25%; 50%≤cubic zirconia+tetragonal zirconia≤95%, the cubic zirconia content being greater than 50%, the cubic zirconia content being the (cubic zirconia/(cubic zirconia+tetragonal zirconia) ratio by weight); 0≤monoclinic zirconia≤(10−0.2*tetragonal zirconia) %; 5%≤corundum≤50%; crystalline phases other than zircon, cubic zirconia, tetragonal zirconia, monoclinic zirconia and corundum<10%; and the following chemical composition, as percentages by weight based on the oxides: 34%≤ZrO+HfO, ZrO+HfObeing the remainder to 100%; HfO≤4.0%; 0.5%≤SiO≤14.1%; 4.5%≤AlO≤49.6%; 2.75%≤YO≤22.8%; MgO≤5%; CaO≤2%; oxides other than ZrO, HfO, SiO, AlO, MgO, CaO and YO<5.0%.