Estel Hoogovens B.V.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4749446 Horizontal coke-oven batteryExpiredApr 06, 84Jun 07, 88[C10B]
4664750 Method for coke quenching controlExpiredSep 17, 80May 12, 87[C10B]
4532789 Process for reducing the width of a flat metal product by rollingExpiredJun 22, 83Aug 06, 85[B21B]
4503978 Support for cylindrical objects such as rolled coilsExpiredSep 08, 82Mar 12, 85[A47F]
4473519 Method of agglomeration of fly ash into pelletsExpiredSep 29, 82Sep 25, 84[C04B]
4456083 Blast furnace taphole drillExpiredMay 12, 81Jun 26, 84[E21B]
4456157 Connection arrangement for a spout and an immersion nozzle, both of refractory materialExpiredJun 03, 82Jun 26, 84[B22D]
4441701 Apparatus for supporting and guiding a sub-lanceExpiredSep 17, 82Apr 10, 84[C21C]
4441935 Apparatus and method for scarfingExpiredAug 31, 82Apr 10, 84[B23K]
4438653 Sublance for measuring and/or sampling in a metallurgical furnaceExpiredJul 06, 82Mar 27, 84[G01N]
4439049 Temperature scannerExpiredFeb 02, 82Mar 27, 84[G01K, G01J]
4436508 Ceramic burner for gas, particularly for a hot-blast stove for a blast furnaceExpiredApr 06, 82Mar 13, 84[F24H, F23C, C21B]
4427186 Liquid-cooled lance for blowing oxygen onto a steel bathExpiredSep 24, 82Jan 24, 84[C21C]
4412479 Gas flow arrangementExpiredApr 21, 81Nov 01, 83[F24F]
4398999 Coke-oven battery having tie cooking membersExpiredJan 21, 82Aug 16, 83[C10B]
4388816 Method and apparatus for rolling a length of metal bar or wireExpiredJan 21, 81Jun 21, 83[B21B]
4387004 Seal for a coke oven doorExpiredOct 05, 81Jun 07, 83[C10B]
4379427 Apparatus for applying marks to a product e.g. a coil of rolled steelExpiredAug 10, 81Apr 12, 83[B41F]
4379548 Exhaust system especially for use in the cast house of a blast furnaceExpiredMar 06, 81Apr 12, 83[C21C, C21B]
4378547 ElectromagnetExpiredSep 17, 80Mar 29, 83[H01F]

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