Inventor
GREENWOOD DAVID
GB25 patents
⚠️ This page may combine multiple inventors who share the name “GREENWOOD DAVID”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ICI PLC
13 patentsUS4703113AOct 27, 1987
Water-soluble triazine black dyes free from cellulose reactive groups and suitable for use in inks
ICI PLC76 citations95
US5203912AApr 20, 1993
Anionic dye
ICI PLC35 citations92
US5053495AOct 1, 1991
Anionic dye having high water-fastness
ICI PLC31 citations92
US4777248AOct 11, 1988
Water-soluble non-reactive triazinyl mono-azo dye for ink jet printing
ICI PLC18 citations82
US4767459AAug 30, 1988
Ink
ICI PLC24 citations79
US4634555AJan 6, 1987
Water-soluble copper phthalocyanine dyes free from cellulose reactive groups
ICI PLC22 citations78
US4904507AFeb 27, 1990
Information device
ICI PLC8 citations74
US4705528ANov 10, 1987
Water-soluble triazine black dyes from cellulose reactive groups and suitable for use in inks
ICI PLC9 citations73
US4780532AOct 25, 1988
Water-soluble triazine dyestuffs free from cellulose reactive groups and suitable for use in inks
ICI PLC3 citations62
US4746733AMay 24, 1988
Water-soluble triphendioxazine disazo dyes
ICI PLC2 citations62
US5171848ADec 15, 1992
Salts of black trisazo dyes with alkyl amines having good solubility in organic liquids
ICI PLC4 citations61
US5254675AOct 19, 1993
Anionic disazo dyes
ICI PLC0 citations52
US4758658AJul 19, 1988
Water-soluble formazan dye
ICI PLC1 citations51
CANON KK
7 patentsUS4726844AFeb 23, 1988
Ink containing water-soluble non-reactive triazinyl mono-azo dye for ink jet printing
CANON KK30 citations92
US4738721AApr 19, 1988
Ink comprising a water-soluble triphendioxazine dye
CANON KK16 citations81
US5118737AJun 2, 1992
Water-soluble dye
CANON KK5 citations62
US4799960AJan 24, 1989
Ink comprising water soluble triazine dye free from cellulose reactive groups
CANON KK2 citations62
US4790879ADec 13, 1988
Water-soluble triazane dyestuffs free from cellulose reactive groups and suitable for use in inks
CANON KK2 citations62
US4735657AApr 5, 1988
Water-soluble dye in an ink
CANON KK5 citations62
US4772323ASep 20, 1988
Ink comprising at least one water soluble-formazan dye, free from cellulose-reactive groups
CANON KK1 citations51