Inventor

PRESGRAVE JOHN E

GB3 patents

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

ICI PLC

2 patents

US4767459AAug 30, 1988

Ink

ICI PLC24 citations79

US5171848ADec 15, 1992

Salts of black trisazo dyes with alkyl amines having good solubility in organic liquids

ICI PLC4 citations61

ZENECA LTD

1 patent

US5370730ADec 6, 1994

Dye composition and aqueous ink derived therefrom

ZENECA LTD16 citations72