Assignee
ELKEM AS
NO·81 granted patents·5 pending applications·940 citations·filing 1980–2018
Top patents by PatentIndex Score
86 records- 0193US4935060AHydraulic cement slurryELKEM AS·Filed 1989·Granted Jun 19, 1990·120 cites·17 claims
- 0289US4539194AMethod for production of pure siliconELKEM AS·Filed 1984·Granted Sep 3, 1985·50 cites·5 claims
- 0383US4722952AResin compositionsELKEM AS·Filed 1986·Granted Feb 2, 1988·35 cites·22 claims
- 0482US5654460AMethod for production of aklylhalosilanesELKEM AS·Filed 1995·Granted Aug 5, 1997·44 cites·8 claims
- 0581US4385935AMethod of producing light weight cement for use of cementation of oil and gas wellsELKEM AS·Filed 1981·Granted May 31, 1983·59 cites·4 claims
- 0680US4337128ACupric and ferric chloride leach of metal sulphide-containing materialELKEM AS·Filed 1981·Granted Jun 29, 1982·27 cites·14 claims
- 0779US4752218ACeramic composite material and a lining for metallurgical smelting furnaces wherein a ceramic composite material is usedELKEM AS·Filed 1986·Granted Jun 21, 1988·16 cites·5 claims
- 0878US7381392B2Silicon feedstock for solar cellsELKEM AS·Filed 2004·Granted Jun 3, 2008·17 cites·5 claims
- 0977US10612105B2Gray cast iron inoculantELKEM AS·Filed 2018·Granted Apr 7, 2020·1 cites·8 claims
- 1076US7901561B2Method for electrolytic production and refining of metalsELKEM AS·Filed 2007·Granted Mar 8, 2011·6 cites·44 claims
- 1175US5007480AUse of manganese oxide in drilling mud and oil well cement slurriesELKEM AS·Filed 1989·Granted Apr 16, 1991·39 cites·28 claims
- 1273US10767238B2Gray cast iron inoculantELKEM AS·Filed 2016·Granted Sep 8, 2020·1 cites·4 claims
- 1373US4986971AMethod for production of trichloromonosilaneELKEM AS·Filed 1989·Granted Jan 22, 1991·23 cites·6 claims
- 1472US5128116ASilicon powder and method for production of silicon powderELKEM AS·Filed 1990·Granted Jul 7, 1992·26 cites·17 claims
- 1571US5004496AMethod and apparatus for treatment of dust recovered from off gases in metallurgical processesELKEM AS·Filed 1990·Granted Apr 2, 1991·29 cites·17 claims
- 1669US4957551AMethod for treatment of dust recovered from off gases in metallurgical processesELKEM AS·Filed 1988·Granted Sep 18, 1990·14 cites·12 claims
- 1767US9388481B2High strength, oxidation and wear resistant titanium-silicon based alloyELKEM AS·Filed 2014·Granted Jul 12, 2016·0 cites·6 claims
- 1867US5094832ASilicon powder and a method for producing silicon powder by gas atomization of siliconELKEM AS·Filed 1990·Granted Mar 10, 1992·20 cites·3 claims
- 1966US7931883B2Silicon feedstock for solar cellsELKEM AS·Filed 2008·Granted Apr 26, 2011·1 cites·6 claims
- 2065US10202534B2Viscosifier for oil well fluidsELKEM AS·Filed 2014·Granted Feb 12, 2019·1 cites·21 claims
- 2163US4663844ADevice for cutting an electrode casingELKEM AS·Filed 1986·Granted May 12, 1987·22 cites·7 claims
- 2263US4537551AMethod and means of charging electrothermic smelting furnacesELKEM AS·Filed 1983·Granted Aug 27, 1985·10 cites·12 claims
- 2362US5585080AMethod for recovering iron chloride, aluminum chloride and calcium chloride from a leach solutionELKEM AS·Filed 1995·Granted Dec 17, 1996·20 cites·16 claims
- 2462US4421616AMethod of producing zinc from chloride solutions which contain chiefly iron, copper and zincELKEM AS·Filed 1981·Granted Dec 20, 1983·11 cites·5 claims
- 2561US7462341B2Method for production of trichlorosilane and silicon for use in the production of trichlorosilaneELKEM AS·Filed 2004·Granted Dec 9, 2008·10 cites·14 claims
- 2661US4931098AMethod for adding silica fume to dry shotcrete mixtureELKEM AS·Filed 1988·Granted Jun 5, 1990·18 cites·13 claims
- 2757US7470419B2Granules of powdery mineral and method for production of granulesELKEM AS·Filed 2005·Granted Dec 30, 2008·4 cites·9 claims
- 2856US4435815AMethod and apparatus for charging a furnaceELKEM AS·Filed 1982·Granted Mar 6, 1984·7 cites·13 claims
- 2955US5258053AMethod for production of granulesELKEM AS·Filed 1992·Granted Nov 2, 1993·19 cites·21 claims
- 3055US4539124ALubricating system composition for extrusion of polyvinyl chloride resin binderELKEM AS·Filed 1984·Granted Sep 3, 1985·14 cites·19 claims
- 3154US4612151AMethod for continuous production of elongated carbon bodiesELKEM AS·Filed 1984·Granted Sep 16, 1986·14 cites·16 claims
- 3253US4543656AElectrode holder system for electrothermic smelting furnacesELKEM AS·Filed 1983·Granted Sep 24, 1985·13 cites·3 claims
- 3353US4515329AFeed device for guiding a rope onto a winding drumELKEM AS·Filed 1983·Granted May 7, 1985·14 cites·4 claims
- 3453US4376381ALockELKEM AS·Filed 1980·Granted Mar 15, 1983·15 cites·3 claims
- 3552US4674728ASidewall for a metallurgical smelting furnaceELKEM AS·Filed 1986·Granted Jun 23, 1987·11 cites·17 claims
- 3650US4646317AElectrode holder system for electrothermic smelting furnacesELKEM AS·Filed 1985·Granted Feb 24, 1987·13 cites·5 claims
- 3750US4465569AMethod of producing zinc from chloride solutions which contain chiefly iron, copper and zincELKEM AS·Filed 1983·Granted Aug 14, 1984·7 cites·12 claims
- 3850US4367215AMethod of acid leaching of silicatesELKEM AS·Filed 1980·Granted Jan 4, 1983·12 cites·8 claims
- 3948US7232544B2Apparatus for continuous slag treatment of siliconELKEM AS·Filed 2002·Granted Jun 19, 2007·3 cites·10 claims
- 4047US8053507B2Highly filled elastomeric resin compositions with added microsilica for processabilityELKEM AS·Filed 2003·Granted Nov 8, 2011·2 cites·5 claims
- 4146US5634960AScrap melting in a submerged arc furnaceELKEM AS·Filed 1995·Granted Jun 3, 1997·10 cites·11 claims
- 4246US4552632AHydrometallurgical method of extraction of copper from sulphide-containing materialELKEM AS·Filed 1984·Granted Nov 12, 1985·6 cites·4 claims
- 4346US4424584AElectrode holder assembly for self-baking electrodesELKEM AS·Filed 1981·Granted Jan 3, 1984·10 cites·15 claims
- 4445US4649807AMethod for preventing dust depositions or build-ups in off-gas channels of electrothermal smelting furnacesELKEM AS·Filed 1985·Granted Mar 17, 1987·8 cites·5 claims
- 4544US9738540B2Process for the production of aluminium oxide particlesELKEM AS·Filed 2015·Granted Aug 22, 2017·0 cites·10 claims
- 4644US4375960AMeans for transporting/rotating the pot of a smelting furnaceELKEM AS·Filed 1981·Granted Mar 8, 1983·5 cites·6 claims
- 4743US10011496B2Process for the production of silicon dioxide particlesELKEM AS·Filed 2015·Granted Jul 3, 2018·0 cites·7 claims
- 4843US7504010B2Anode for electrolysis of aluminumELKEM AS·Filed 2006·Granted Mar 17, 2009·0 cites·20 claims
- 4942US5651807AMethod for treatment of residues from organochlorosilane and/or chlorosilansynthesisELKEM AS·Filed 1995·Granted Jul 29, 1997·12 cites·9 claims
- 5042US4435817AContact assemblyELKEM AS·Filed 1981·Granted Mar 6, 1984·7 cites·8 claims
Showing the top 50 of 86 patent records by PatentIndex Score.
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