Inventor · disambiguated record
John Richard Duncan
Also filed as: DUNCAN JOHN R · DUNCAN JOHN RICHARD
4 granted patents·72 citations·filing 1981–1999
78Inventor score
Top patents by PatentIndex Score
4 records- 0161US6203700B1Process for treating metal-containing acid waterWATER RES COMMISSION·Filed 1999·Granted Mar 20, 2001·28 cites·16 claims
- 0254US6110370ATreatment of waterWATER RES COMMISSION·Filed 1998·Granted Aug 29, 2000·21 cites·18 claims
- 0349US6315904B1Process for treating sulphate-containing waste waterWATER RES COMMISSION·Filed 1999·Granted Nov 13, 2001·17 cites·18 claims
- 0439US4421972APulsed direct current arc weldingCARRIER CORP·Filed 1981·Granted Dec 20, 1983·6 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →