Patent · US Expired

Ballpoint pen pastes with phthalocyanine pigments

US5814139A · kind A · utility

1Cited by

4References

5Claims

0Family size

Assignee

BASF SE

Inventors

Karin H. Beck · Ludwigshafen, DE
Helmut Bellaire · Ludwigshafen, DE
Erwin Czech · Biblis, DE
Walter Kurtz · Bad Dürkheim, DE

Key dates

Filing date	Jul 18, 1996
Grant date	Sep 29, 1998
Priority date	—
Expiry date	Jul 18, 2016

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D11/18
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Ballpoint pen pastes comprising at least one phthalocyanine pigment and customary ballpoint pen paste resin and organic solvent as essential components and also, if desired, further customary additives, and the preparation thereof.

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