Inventor · disambiguated record
Keith Stuart Liddell
Also filed as: LIDDELL KEITH S · LIDDELL KEITH STUART
6 granted patents·1 pending application·68 citations·filing 1990–2022
82Inventor score
Top patents by PatentIndex Score
7 records- 0193US9982320B2Treatment process for extraction of precious, base and rare elementsLIFEZONE LTD·Filed 2015·Granted May 29, 2018·14 cites·27 claims
- 0288US9540706B2Hydrometallurgical treatment process for extraction of metals from concentratesLIFEZONE LTD·Filed 2013·Granted Jan 10, 2017·6 cites·24 claims
- 0380US10011889B2Treatment process for recovery and separation of elements from liquorsLIFEZONE LTD·Filed 2015·Granted Jul 3, 2018·2 cites·14 claims
- 0472US10988826B2Hydrometallurgical treatment process for extraction of precious, base and rare elementsLIFEZONE LTD·Filed 2018·Granted Apr 27, 2021·1 cites·31 claims
- 0568US6579504B1Hydrometallurgical treatment process for extraction of platinum group metals obviating the matte smelting processFiled 1999·Granted Jun 17, 2003·20 cites·14 claims
- 0665US5007589AProcess for simultaneously leaching and fine milling a subdivided source materialMETPROTECH LTD·Filed 1990·Granted Apr 16, 1991·25 cites·10 claims
- 0765US2025051875A1Hydrogen-based valorisation of metal-containing feed materials to extract metalsLIFEZONE LTD·Filed 2022·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →