Inventor · disambiguated record
William C. Copenhafer
Also filed as: COPENHAFER WILLIAM · COPENHAFER WILLIAM C
19 granted patents·5 pending applications·573 citations·filing 1980–2014
96Inventor score
Files withFMC CORP9FMC WYOMING CORP5INTERMOUNTAIN RES & DEV CORP5COPENHAFER ANN1INTERMOUNTAIN RESEARCH & DEVEL1
Top patents by PatentIndex Score
24 records- 0194US6428759B1Production of feed liquors for sodium carbonate crystallization processesFMC WYOMING CORP·Filed 2000·Granted Aug 6, 2002·63 cites·25 claims
- 0291US6228335B1Process for the production of sodium carbonate crystalsFMC WYOMING CORP·Filed 1997·Granted May 8, 2001·40 cites·30 claims
- 0391US5262134AProcess for producing sodium salts from brines of sodium oresFMC CORP·Filed 1992·Granted Nov 16, 1993·70 cites·42 claims
- 0490US5283054AProcess for producing sodium salts from brines of sodium oresFMC CORP·Filed 1993·Granted Feb 1, 1994·81 cites·35 claims
- 0589US7998446B2Flue gas desulfurization process utilizing hydrogen peroxideFMC CORP·Filed 2008·Granted Aug 16, 2011·11 cites·21 claims
- 0688US8454840B1Selective removal of sulfide from aqueous alkali solutionsCOPENHAFER ANN·Filed 2012·Granted Jun 4, 2013·8 cites·14 claims
- 0786US7638109B2Production of sodium sesquicarbonate and sodium carbonate monohydrateFMC CORP·Filed 2006·Granted Dec 29, 2009·7 cites·20 claims
- 0885US6576206B2Bicarbonate conversion in a carbonate monohydrate processFMC WYOMING CORP·Filed 2001·Granted Jun 10, 2003·22 cites·18 claims
- 0983US4654204AProduction of sodium bicarbonate by reversion of soda-type feed saltINTERMOUNTAIN RES & DEV CORP·Filed 1985·Granted Mar 31, 1987·35 cites·28 claims
- 1082US4288419AEnhanced recovery of sodium carbonate from NaCl-containing sodium carbonate solutionsINTERMOUNTAIN RESEARCH & DEVEL·Filed 1980·Granted Sep 8, 1981·32 cites·9 claims
- 1181US4652054ASolution mining of trona or nahcolite ore with electrodialytically-produced aqueous sodium hydroxideINTERMOUNTAIN RES & DEV CORP·Filed 1985·Granted Mar 24, 1987·65 cites·15 claims
- 1277US4588569ADry injection flue gas desulfurization process using absorptive soda ash sorbentINTERMOUNTAIN RES & DEV CORP·Filed 1985·Granted May 13, 1986·46 cites·25 claims
- 1375US8858902B2Selective removal of sulfide from aqueous alkali solutionsFMC WYOMING CORP·Filed 2013·Granted Oct 14, 2014·1 cites·11 claims
- 1470US4729881AHydrometallurgical process for the production of berylliumFMC CORP·Filed 1986·Granted Mar 8, 1988·19 cites·18 claims
- 1565US7018594B2Crystallization of sodium carbonate decahydrate from liquors supersaturated in sodium bicarbonateFMC WYOMING CORP·Filed 2002·Granted Mar 28, 2006·3 cites·20 claims
- 1664US4283372ARecovery of alkali values from sodium bicarbonate-containing ore with ammoniaINTERMOUNTAIN RES & DEV CORP·Filed 1980·Granted Aug 11, 1981·24 cites·19 claims
- 1762US5194176APeroxygen laundry bleachFMC CORP·Filed 1991·Granted Mar 16, 1993·25 cites·4 claims
- 1862US4519806AEnhanced recovery of soda ash from aqueous sodium carbonate solutions containing Na2 SO4 - and NaClINTERMOUNTAIN RES & DEV CORP·Filed 1982·Granted May 28, 1985·14 cites·13 claims
- 1948US2002054842A1Process for the recovery of soda ashFiled 2001·Application pending·0 cites
- 2046US2002009409A1Process for the recovery of soda ashFiled 2001·Application pending·0 cites
- 2146US2009043123A1Dilute Stabilized Peracetic Acid Production and Treatment ProcessFMC CORP·Filed 2008·Application pending·0 cites
- 2242US2011014106A1COMBUSTION FLUE GAS SOx TREATMENT VIA DRY SORBENT INJECTIONFMC CORP·Filed 2010·Application pending·0 cites
- 2341US6022516AMethod of reducing the formation of scale in the production of soda ash from trona and nahcolite oresFMC CORP·Filed 1998·Granted Feb 8, 2000·7 cites·20 claims
- 2429US2015368051A1Flue Gas Treatment ProcessNATRONX TECHNOLOGIES LLC·Filed 2014·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →