Inventor · disambiguated record
John E. Presgrave
Also filed as: PRESGRAVE JOHN E · PRESGRAVE JOHN EDWARD
5 granted patents·74 citations·filing 1987–2000
81Inventor score
Top patents by PatentIndex Score
5 records- 0184US6605144B1High light- fastness yellow compositionAVECIA LTD·Filed 2000·Granted Aug 12, 2003·16 cites·13 claims
- 0272US4767459AInkICI PLC·Filed 1987·Granted Aug 30, 1988·24 cites·6 claims
- 0355US5370730ADye composition and aqueous ink derived therefromZENECA LTD·Filed 1993·Granted Dec 6, 1994·16 cites·8 claims
- 0452US5171848ASalts of black trisazo dyes with alkyl amines having good solubility in organic liquidsICI PLC·Filed 1992·Granted Dec 15, 1992·4 cites·6 claims
- 0551US6267806B1Dye compositionsZENECA LTD·Filed 1998·Granted Jul 31, 2001·14 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →