Inventor · disambiguated record
Ralph Peter Hackl
Also filed as: HACKL RALPH P · HACKL RALPH PETER
18 granted patents·6 pending applications·491 citations·filing 1983–2023
96Inventor score
Files withTECH RESOURCES PTY LTD7PLACER DOME TECHNICAL SERVICES6JI JINXING3RIO TINTO TECH RESOURCES INC3GB BIOTECH INC2
Top patents by PatentIndex Score
24 records- 0198US6660059B2Method for thiosulfate leaching of precious metal-containing materialsPLACER DOME TECHNICAL SERVICES·Filed 2001·Granted Dec 9, 2003·79 cites·67 claims
- 0297US7559974B2Method for thiosulfate leaching of precious metal-containing materialsPLACER DOME TECHNICAL SERVICES·Filed 2007·Granted Jul 14, 2009·17 cites·25 claims
- 0397US7544232B2Method for thiosulfate leaching of precious metal-containing materialsPLACER DOME TECHNICAL SERVICES·Filed 2006·Granted Jun 9, 2009·22 cites·18 claims
- 0496US8821613B2Method for thiosulfate leaching of precious metal-containing materialsJI JINXING·Filed 2010·Granted Sep 2, 2014·13 cites·48 claims
- 0595US7066983B2Method for thiosulfate leaching of precious metal-containing materialsPLACER DOME TECHNICAL SERVICES·Filed 2003·Granted Jun 27, 2006·30 cites·74 claims
- 0694US8597399B2Method for thiosulfate leaching of precious metal-containing materialsJI JINXING·Filed 2011·Granted Dec 3, 2013·8 cites·29 claims
- 0793US7704298B2Method for thiosulfate leaching of precious metal-containing materialsPLACER DOME TECHNICAL SERVICES·Filed 2004·Granted Apr 27, 2010·21 cites·82 claims
- 0891US10563287B2Leaching copper-containing oresTECH RESOURCES PTY LTD·Filed 2018·Granted Feb 18, 2020·8 cites·29 claims
- 0991US8097227B2Method for thiosulfate leaching of precious metal-containing materialsHACKL RALPH PETER·Filed 2010·Granted Jan 17, 2012·10 cites·21 claims
- 1091US4571387ABiological-acid leach processBRITISH COLUMBIA RES COUNCIL·Filed 1983·Granted Feb 18, 1986·126 cites·17 claims
- 1189US7722840B2Method for thiosulfate leaching of precious metal-containing materialsPLACER DOME TECHNICAL SERVICES·Filed 2003·Granted May 25, 2010·19 cites·48 claims
- 1287US4888293AAdapting bacteria to low pH and high arsenic concentration for use in oxidizing sulfide oresGIANT BAY BIOTECH INC·Filed 1987·Granted Dec 19, 1989·52 cites·4 claims
- 1386US10526685B2Heap leachingTECH RESOURCES PTY LTD·Filed 2018·Granted Jan 7, 2020·2 cites·23 claims
- 1483US11236407B1Metal recovery by leaching agglomerates of metal-containing material/pyriteRIO TINTO TECH RESOURCES INC·Filed 2020·Granted Feb 1, 2022·3 cites·11 claims
- 1583US4987081AChemical/biological process to oxidize multimetallic sulphide oresGB BIOTECH INC·Filed 1988·Granted Jan 22, 1991·60 cites·20 claims
- 1679US10563284B2Leaching copper-containing oresTECH RESOURCES PTY LTD·Filed 2019·Granted Feb 18, 2020·2 cites·28 claims
- 1774USRE50227ELeaching copper-containing oresTECH RESOURCES PTY LTD·Filed 2022·Granted Dec 3, 2024·0 cites·41 claims
- 1868US5089412ABacteria for oxidizing multimetallic sulphide oresGB BIOTECH INC·Filed 1989·Granted Feb 18, 1992·19 cites·2 claims
- 1965US2025092488A1Leaching MethodTECH RESOURCES PTY LTD·Filed 2022·Application pending·0 cites
- 2065US2014047954A1Method for thiosulfate leaching of precious metal-containing materialsJI JINXING·Filed 2013·Application pending·0 cites
- 2163US2023392232A1Recovering Metal from Metal-Bearing MaterialRIO TINTO TECH RESOURCES INC·Filed 2021·Application pending·0 cites
- 2261US2024271249A1Heap Leaching an OreRIO TINTO TECH RESOURCES INC·Filed 2023·Application pending·0 cites
- 2357US2019345580A1Leaching Copper-Containing OresTECH RESOURCES PTY LTD·Filed 2018·Application pending·0 cites
- 2439US2019382869A1Heap LeachingTECH RESOURCES PTY LTD·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →