Inventor · disambiguated record
John Lindley Leng
Also filed as: LENG JOHN L · LENG JOHN LINDLEY
9 granted patents·219 citations·filing 1973–2000
90Inventor score
Top patents by PatentIndex Score
9 records- 0195US3935183AIndazole-azo phenyl compoundsICI LTD·Filed 1973·Granted Jan 27, 1976·70 cites·1 claims
- 0293US3996221ADyestuffsICI LTD·Filed 1975·Granted Dec 7, 1976·29 cites·3 claims
- 0392US4978788AComposition and use of the composition for the extraction of metals from aqueous solutionICI PLC·Filed 1988·Granted Dec 18, 1990·43 cites·9 claims
- 0487US5281336AComposition and use of the composition for the extraction of metals from aqueous solutionICI PLC·Filed 1992·Granted Jan 25, 1994·29 cites·6 claims
- 0578US6113804AComposition and use of the composition for the extraction of metals from aqueous solutionICI PLC·Filed 1993·Granted Sep 5, 2000·16 cites·7 claims
- 0675US5176843AComposition and use of the composition for the extraction of metals from aqueous solutionICI PLC·Filed 1990·Granted Jan 5, 1993·20 cites·9 claims
- 0771US6277300B1Composition and use of composition for the extraction of metal valuesZENECA LTD·Filed 2000·Granted Aug 21, 2001·5 cites·8 claims
- 0860US4002604AAzo dyestuff including a 1,3 or 1,4-benzodioxan ring structure fused to a thiazole ringICI LTD·Filed 1975·Granted Jan 11, 1977·5 cites·14 claims
- 0942US3956265AMonoazo hydroxy pyridone dyestuffs containing a methylene piperidino groupICI LTD·Filed 1973·Granted May 11, 1976·2 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →