Alpha alumina with high purity and high relative density, a method for its production and its use

US11964878B2 · kind B2 · utility

Inventors

• Reiner Glockler · Wasserburg am Inn, DE
• Holger Mitzel · Brunsbüttel, DE

Key dates

• Filing date: Jul 24, 2019
• Grant date: Apr 23, 2024
• Expiry date: Sep 30, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/549
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to an alpha alumina having a high purity, a high density and a low surface area and particularly, to a method to produce such an alpha alumina as well as to the use of the alpha alumina in sapphire production or the production of composite and ceramic bodies.