Patent · US Expired

Preparation of styryl dyes

US6852873B2 · kind B2 · utility

0Cited by

3References

5Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Josef-Walter Stawitz · Cologne, DE
Stephan Michaelis · Leverkusen, DE
Christoph Thiebes · Cologne, DE

Key dates

Filing date	Aug 19, 2002
Grant date	Feb 8, 2005
Priority date	—
Expiry date	Aug 19, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B23/143
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Process for preparing compounds of the formula (I) where

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