Patent · US Expired

Crystal form of a perinone dye

US6846335B2 · kind B2 · utility

0Cited by

3References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

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

Key dates

Filing date	Mar 25, 2002
Grant date	Jan 25, 2005
Priority date	—
Expiry date	Jun 19, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B67/0025
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A novel crystal form of C.I. Solvent Orange 60 gives a higher space-time yield in dye synthesis and is more easily finished.

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