Transparent medium with angular-selective transmitting or reflecting properties

US6602340B1 · kind B1 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Christina Schank · Mühltal, DE
• Gerhard Pfaff · Mainburg, DE
• Alexandra BROWNFIELD · Clarence, US
• Joachim Weitzel · Darmstadt, DE
• Wolfgang Hechler · Herbstein, DE

Key dates

• Filing date: Jun 19, 2000
• Grant date: Aug 5, 2003
• Expiry date: Jun 19, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2991
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a transparent medium comprising pearl lustre pigments having angle-selective reflection and/or transmission properties and to the use thereof, especially in transparent thermal insulation systems (TIMs).