Assignee
HYLSA SA
MX·67 granted patents·2 pending applications·1,303 citations·filing 1978–2005
Top patents by PatentIndex Score
69 records- 0186US6027545AMethod and apparatus for producing direct reduced iron with improved reducing gas utilizationHYLSA SA·Filed 1999·Granted Feb 22, 2000·57 cites·26 claims
- 0286US5656044AMethod and apparatus for gasification of organic materialsHYLSA SA·Filed 1995·Granted Aug 12, 1997·57 cites·19 claims
- 0385US6039283AThin strip coiling systemHYLSA SA·Filed 1998·Granted Mar 21, 2000·40 cites·20 claims
- 0483US6986800B2Method and apparatus for improved use of primary energy sources in integrated steel plantsHYLSA SA·Filed 2004·Granted Jan 17, 2006·36 cites·14 claims
- 0583US4637034ACooling panel for electric arc furnaceHYLSA SA·Filed 1984·Granted Jan 13, 1987·33 cites·24 claims
- 0682US6379421B1Method and apparatus removing undesirable metals from iron-containing materialsHYLSA SA·Filed 2000·Granted Apr 30, 2002·25 cites·17 claims
- 0781US6871457B2Vessel for enabling a uniform gravity driven flow of particulate bulk material therethrough, and direct reduction reactor incorporating sameHYLSA SA·Filed 2002·Granted Mar 29, 2005·37 cites·50 claims
- 0881US5851246AApparatus for gasifying organic materialsHYLSA SA·Filed 1995·Granted Dec 22, 1998·42 cites·19 claims
- 0980US5445363AApparatus for the pneumatic transport of large iron-bearing particlesHYLSA SA·Filed 1993·Granted Aug 29, 1995·36 cites·9 claims
- 1080US4714597ACorrosion inhibitor for CO2 absorption process using alkanolaminesHYLSA SA·Filed 1986·Granted Dec 22, 1987·56 cites·8 claims
- 1180US4449671AApparatus for separating agglomerated particulate matterHYLSA SA·Filed 1981·Granted May 22, 1984·27 cites·26 claims
- 1280US4224057AMethod for carburizing sponge ironHYLSA SA·Filed 1979·Granted Sep 23, 1980·23 cites·16 claims
- 1379US5676732AMethod for producing direct reduced iron utilizing a reducing gas with a high content of carbon monoxideHYLSA SA·Filed 1995·Granted Oct 14, 1997·33 cites·11 claims
- 1479US4336063AMethod and apparatus for the gaseous reduction of iron ore to sponge ironHYLSA SA·Filed 1980·Granted Jun 22, 1982·24 cites·10 claims
- 1579US4248624AUse of prereduced ore in a blast furnaceHYLSA SA·Filed 1979·Granted Feb 3, 1981·28 cites·6 claims
- 1678US5425792AMethod for gasifying organic materialsHYLSA SA·Filed 1993·Granted Jun 20, 1995·30 cites·18 claims
- 1778US4253867AMethod of using a methane-containing gas for reducing iron oreHYLSA SA·Filed 1979·Granted Mar 3, 1981·20 cites·8 claims
- 1876US5858057AMethod for producing direct reduced iron with a controlled amount of carbonHYLSA SA·Filed 1996·Granted Jan 12, 1999·35 cites·11 claims
- 1974US6395056B1Method for the heat treatment of iron ore lumps in a reduction systemHYLSA SA·Filed 1999·Granted May 28, 2002·32 cites·7 claims
- 2074US5110350AMethod of reducing iron oreHYLSA SA·Filed 1989·Granted May 5, 1992·26 cites·21 claims
- 2174US4191885AMethod for determining weight of molten metal in situHYLSA SA·Filed 1978·Granted Mar 4, 1980·11 cites·19 claims
- 2273US4880458AStart-up method for a direct reduction process without an external reformerHYLSA SA·Filed 1988·Granted Nov 14, 1989·22 cites·20 claims
- 2373US4834792AMethod for producing hot sponge iron by introducing hydrocarbon for carburizing into reduction zoneHYLSA SA·Filed 1986·Granted May 30, 1989·21 cites·20 claims
- 2472US4528030AMethod of reducing iron oreHYLSA SA·Filed 1983·Granted Jul 9, 1985·18 cites·23 claims
- 2570US5296015AMethod for the pneumatic transport of large iron-bearing particlesHYLSA SA·Filed 1990·Granted Mar 22, 1994·26 cites·40 claims
- 2670US4556417AProcess for the direct reduction of iron oresHYLSA SA·Filed 1983·Granted Dec 3, 1985·22 cites·20 claims
- 2768US6039916AApparatus for producing direct reduced iron with a controlled amount of carbonHYLSA SA·Filed 1998·Granted Mar 21, 2000·23 cites·6 claims
- 2868US4747872AProcess and apparatus for producing high purity ironHYLSA SA·Filed 1985·Granted May 31, 1988·20 cites·17 claims
- 2968US4608240AMethod for the desulfurization of hydrocarbon gasHYLSA SA·Filed 1983·Granted Aug 26, 1986·9 cites·20 claims
- 3068US4412858AMethod of converting iron ore into molten ironHYLSA SA·Filed 1982·Granted Nov 1, 1983·18 cites·8 claims
- 3168US4216011AMethod and apparatus for the secondary gaseous reduction of metal oresHYLSA SA·Filed 1979·Granted Aug 5, 1980·16 cites·18 claims
- 3265US4725309AMethod and apparatus for producing hot direct reduced ironHYLSA SA·Filed 1986·Granted Feb 16, 1988·17 cites·20 claims
- 3364US4897113ADirect reduction process in reactor with hot dischargeHYLSA SA·Filed 1988·Granted Jan 30, 1990·18 cites·17 claims
- 3464US4261734AMethod of making sponge ironHYLSA SA·Filed 1979·Granted Apr 14, 1981·11 cites·18 claims
- 3563US5882579AApparatus for producing direct reduced iron utilizing a reducing gas with a high content of carbon monoxideHYLSA SA·Filed 1997·Granted Mar 16, 1999·14 cites·16 claims
- 3662US4584016AMethod for controlling metallization and carburization in the reduction of metal ores to sponge ironHYLSA SA·Filed 1984·Granted Apr 22, 1986·15 cites·6 claims
- 3762US4427136ARotary valveHYLSA SA·Filed 1981·Granted Jan 24, 1984·19 cites·8 claims
- 3862US4370162AMethod for the gaseous reduction of iron ore to sponge ironHYLSA SA·Filed 1981·Granted Jan 25, 1983·15 cites·5 claims
- 3961US5766542ARefractory bricks for iron ore reduction reactorsHYLSA SA·Filed 1997·Granted Jun 16, 1998·23 cites·22 claims
- 4060US6224649B1Method and apparatus for reducing iron-oxides-particles having a broad range of sizesHYLSA SA·Filed 1999·Granted May 1, 2001·16 cites·37 claims
- 4160US4734128ADirect reduction reactor with hot dischargeHYLSA SA·Filed 1985·Granted Mar 29, 1988·13 cites·9 claims
- 4260US4578110AMethod of reducing iron oxidesHYLSA SA·Filed 1984·Granted Mar 25, 1986·10 cites·19 claims
- 4360US4427135ARotary valveHYLSA SA·Filed 1980·Granted Jan 24, 1984·18 cites·9 claims
- 4457US6132489AMethod and apparatus for reducing iron-oxides-particles having a broad range of sizesHYLSA SA·Filed 1998·Granted Oct 17, 2000·11 cites·26 claims
- 4556US6183535B1Method for increasing the capacity of a direct reduced iron plant without increasing its reformer capacityHYLSA SA·Filed 1998·Granted Feb 6, 2001·16 cites·10 claims
- 4656US5078787AMethod and apparatus for the production of hot direct reduced ironHYLSA SA·Filed 1990·Granted Jan 7, 1992·18 cites·8 claims
- 4756US4428772AMethod for reducing metal oreHYLSA SA·Filed 1981·Granted Jan 31, 1984·11 cites·12 claims
- 4854US4793856AProcess for the direct reduction of iron oresHYLSA SA·Filed 1987·Granted Dec 27, 1988·13 cites·11 claims
- 4954US4375983AMethod of making sponge metalHYLSA SA·Filed 1981·Granted Mar 8, 1983·10 cites·7 claims
- 5052US5181954AMethod for coating iron-bearing particles to be processed in a direct reduction processHYLSA SA·Filed 1991·Granted Jan 26, 1993·12 cites·7 claims
Showing the top 50 of 69 patent records by PatentIndex Score.
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