Inventor

ALFTER FRANK

DE6 patents

⚠️ This page may combine multiple inventors who share the name “ALFTER FRANK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CLARIANT PRODUKTE DEUTSCHLAND

2 patents

US7311769B2Dec 25, 2007

Pigment compositions consisting of a yellow disazo pigment and an organic pigment

CLARIANT PRODUKTE DEUTSCHLAND14 citations83

US7855041B2Dec 21, 2010

Pigment preparation based on an azo pigment

CLARIANT PRODUKTE DEUTSCHLAND16 citations79

HOECHST AG

2 patents

US5716446AFeb 10, 1998

Isoindoline pigments based on aminoquinoxalinediones

HOECHST AG12 citations72

US5698705ADec 16, 1997

Isoindoline pigments

HOECHST AG11 citations72

CLARIANT INT LTD

1 patent

US6437104B1Aug 20, 2002

Preparation of disazo condensation pigments in microreactors

CLARIANT INT LTD34 citations90

CLARIANT FINANCE BVI LTD

1 patent

US7999086B2Aug 16, 2011

Method of conditioning azo pigments containing carboxylic ester groups

CLARIANT FINANCE BVI LTD2 citations55