Inventor · disambiguated record
Derek John Fray
Also filed as: FRAY DEREK · FRAY DEREK J · FRAY DEREK JOHN
37 granted patents·14 pending applications·363 citations·filing 1975–2022
97Inventor score
Top patents by PatentIndex Score
51 records- 0189US7189476B1Rechargeable lithium cell having an anode comprised of carbon nanotubesABSL POWER SOLUTIONS LTD·Filed 2000·Granted Mar 13, 2007·83 cites·6 claims
- 0289US6712952B1Removal of substances from metal and semi-metal compoundsCAMBRIDGE UNIV TECHNICAL SERVI·Filed 1999·Granted Mar 30, 2004·50 cites·41 claims
- 0384US4118292APacked bed electrorefining and electrolysisNAT RES DEV·Filed 1977·Granted Oct 3, 1978·29 cites·9 claims
- 0482US10865488B2Method of producing grapheneCAMBRIDGE ENTPR LTD·Filed 2019·Granted Dec 15, 2020·1 cites·19 claims
- 0580US6641712B1Process for the recovery of tin, tin alloys or lead alloys from printed circuit boardsALPHA FRY LTD·Filed 2000·Granted Nov 4, 2003·28 cites·21 claims
- 0671US8790953B2Method for texturing silicon surface to create black silicon for photovoltaic applicationsFRAY DEREK JOHN·Filed 2011·Granted Jul 29, 2014·2 cites·13 claims
- 0771US8313624B2Electrode materialsFRAY DEREK JOHN·Filed 2008·Granted Nov 20, 2012·2 cites·13 claims
- 0870US10556211B2Method for producing synthetic diamondsUNIV NORTHEASTERN·Filed 2015·Granted Feb 11, 2020·1 cites·16 claims
- 0970US7790014B2Removal of substances from metal and semi-metal compoundsMETALYSIS LTD·Filed 2004·Granted Sep 7, 2010·6 cites·73 claims
- 1066US4292147AZinc chloride electrolysisNAT RES DEV·Filed 1980·Granted Sep 29, 1981·15 cites·11 claims
- 1161US8722961B2Hyperbaric dressingVINTON MELVIN FREDERICK·Filed 2005·Granted May 13, 2014·7 cites·16 claims
- 1261US8057658B2Electrochemical method, apparatus and carbon productFRAY DEREK JOHN·Filed 2005·Granted Nov 15, 2011·1 cites·12 claims
- 1359US4904356AElectrode for electrorefiningNAT RES DEV·Filed 1989·Granted Feb 27, 1990·10 cites·15 claims
- 1458US10106899B2Oxygen generation apparatus and methodCAMBRIDGE ENTPR LTD·Filed 2015·Granted Oct 23, 2018·0 cites·15 claims
- 1558US7544227B2Microwave enhancement of the segregation roastCATO RES CORP·Filed 2004·Granted Jun 9, 2009·2 cites·30 claims
- 1657US4869790AMetal separation processBRITISH PETROLEUM CO PLC·Filed 1987·Granted Sep 26, 1989·12 cites·13 claims
- 1756US10458026B2Method of producing grapheneCAMBRIDGE ENTPR LTD·Filed 2015·Granted Oct 29, 2019·0 cites·27 claims
- 1856US5698759ATreatment of polyvinylchlorideFiled 1993·Granted Dec 16, 1997·24 cites·6 claims
- 1954US4166009AMethod for detecting elementsNAT RES DEV·Filed 1977·Granted Aug 28, 1979·12 cites·2 claims
- 2054US2014209477A1Electro-deoxidation method, apparatus and productBRITISH TITANIUM PLC·Filed 2014·Application pending·0 cites
- 2153US12215436B2Treatment of metal oresCHINUKA LTD·Filed 2022·Granted Feb 4, 2025·0 cites·11 claims
- 2253US4800069AZinc recovery from furnace dustNAT RES DEV·Filed 1987·Granted Jan 24, 1989·8 cites·11 claims
- 2353US2016010232A1Treatment of titanium oresCHINUKA LTD·Filed 2015·Application pending·0 cites
- 2451US2009008261A1Oxygen Generation Apparatus and MethodCAMBRIDGE ENTPR LTD·Filed 2006·Application pending·0 cites
- 2550US4879005AElectrochemical sensor for hydrogen sensingNAT RES DEV·Filed 1988·Granted Nov 7, 1989·13 cites·13 claims
- 2650US4412893AAnode-assisted cation reductionNAT RES DEV·Filed 1983·Granted Nov 1, 1983·9 cites·11 claims
- 2749US9028671B2Hydrogen sensing apparatus and methodFRAY DEREK JOHN·Filed 2011·Granted May 12, 2015·0 cites·21 claims
- 2849US2016258074A1Treatment of titanium oresFRAY DEREK J·Filed 2012·Application pending·0 cites
- 2949US2015056513A1Powder comprising carbon nanostructures and its method of productionCAMBRIDGE ENTPR LTD·Filed 2013·Application pending·0 cites
- 3048US9181604B2Treatment of titanium oresFRAY DEREK J·Filed 2010·Granted Nov 10, 2015·0 cites·12 claims
- 3146US4217179ADetermination of lithium, sensor therefor and method of making said sensorNAT RES DEV·Filed 1979·Granted Aug 12, 1980·8 cites·13 claims
- 3246US2008190777A1Electro-Deoxidation Method, Apparatus and ProductBRITISH TITANIUM PLC·Filed 2005·Application pending·0 cites
- 3344US2016016805A1Method for producing synthetic diamondsCAMBRIDGE ENTPR LTD·Filed 2013·Application pending·0 cites
- 3442US4085023AApparatus for detecting elementsNAT RES DEV·Filed 1975·Granted Apr 18, 1978·7 cites·14 claims
- 3540US2005252789A1Hydrogen sensing apparatus and methodFRAY DEREK J·Filed 2003·Application pending·0 cites
- 3639US4645650AObtaining aqueous solution from insoluble metal oxideNAT RES DEV·Filed 1985·Granted Feb 24, 1987·5 cites·19 claims
- 3739US2008302655A1Electrochemical Method and Apparatus For Removing Oxygen From a Compound or MetalFRAY DEREK JOHN·Filed 2006·Application pending·0 cites
- 3838US7338588B2Intermetallic compoundsCAMBRIDGE ENTPR LTD·Filed 2001·Granted Mar 4, 2008·0 cites·22 claims
- 3938US6309534B1Apparatus and method for measuring the composition of gases using ionically conducting electrolytesFiled 1998·Granted Oct 30, 2001·10 cites·19 claims
- 4037US2013264218A1Oxygen concentration and methodVINTON MELVIN FREDERICK·Filed 2011·Application pending·0 cites
- 4136US7879219B2Electrochemical processing of solid materials in fused saltMETALYSIS LTD·Filed 2002·Granted Feb 1, 2011·0 cites·29 claims
- 4235US2004052672A1Metal and alloy powders and powder fabricationFiled 2001·Application pending·0 cites
- 4334US2005016854A1Materials fabrication method and apparatusFiled 2002·Application pending·0 cites
- 4433US4999092ATransporting a liquid past a barrierMETALLURG INC·Filed 1989·Granted Mar 12, 1991·1 cites·20 claims
- 4533US2018277888A1Electrodes for metal ion batteries and related materials, batteries and methodsBLACK SILICON LTD·Filed 2018·Application pending·0 cites
- 4632US5096552AMonitoring of pyrometallurgical processesMINERAL IND RES ORG·Filed 1989·Granted Mar 17, 1992·4 cites·5 claims
- 4732US4166013AMethod of making metal beta-alumina and refining metal using itNAT RES DEV·Filed 1978·Granted Aug 28, 1979·2 cites·21 claims
- 4831US6599413B1Method and apparatus for the treatment of a meltFOSECO INT·Filed 1999·Granted Jul 29, 2003·5 cites·29 claims
- 4930US2003077515A1Conducting polymer-carbon nanotube composite materials and their usesFiled 2001·Application pending·0 cites
- 5028US5192404AMethod for measuring a minor element in a molten metalMINERAL IND RES ORG·Filed 1991·Granted Mar 9, 1993·4 cites·7 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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