Silicate phosphors

US10689570B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Aleksander ZYCH · Darmstadt, DE
• Ralf Petry · Griesheim, DE
• Mathias Rapphahn · Greifswald, DE
• Ingo Koehler · Darmstadt, DE
• Stefan Tews · Greifswald, DE

Key dates

• Filing date: Mar 30, 2016
• Grant date: Jun 23, 2020
• Expiry date: Jan 18, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K11/77922
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to pyrosilicate phosphors comprising a coating of aluminum oxide, to a process for the preparation of these compounds, and to the use thereof as conversion phosphors or in lamps.