Patent · US Expired

Thermochromic rylene dyes

US6890377B2 · kind B2 · utility

10Cited by

9References

14Claims

0Family size

Assignees

Inventors

Arno Bohm · Mannheim, DE
Matthias Krieger · Soest, DE
Stefan Becker · Mannheim, DE
Klaus Müllen

Key dates

Filing date	Feb 14, 2002
Grant date	May 10, 2005
Priority date	—
Expiry date	Apr 16, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D221/18
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Rylene dyes of the general formula I where

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