Patent · US Expired

Coating comprising a photochromic material, a method for its production as well as its use

US5976717A · kind A · utility

15Cited by

10References

26Claims

0Family size

Assignee

Daimlerchrysler AG · US

Inventors

Karl Holdik · Ulm, DE
Clemens S. Bechinger · Konstanz, DE
Paul Leiderer · Allensbach, DE
Eckehard Wirth · Friedrichshafen, DE

Key dates

Filing date	Dec 19, 1996
Grant date	Nov 2, 1999
Priority date	—
Expiry date	Dec 19, 2016

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C17/347
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a coating comprising a photochromic material, its production and its use. The photochromic material of the coating has an optically reversible photochromic effect, wherein the switching threshold is disposed outside of or in the boundary region of the visible range of the spectrum. According to the invention, the photochromic material is coated with an influencing material, so that the switching threshold of the coated photochromic material is shifted towards wavelengths longer than the switching threshold of the uncoated photochromic material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.