Hoogovens Ijmuiden, B.V.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4754591 Construction and repair of refractory structures, in particular heated structuresExpiredOct 28, 86Jul 05, 88[F04G]
4390346 Apparatus for mixing at least one additional gas into a main flow of gasExpiredSep 24, 81Jun 28, 83[B01F]
4375956 Hot blast stove arrangement for a blast furnaceExpiredSep 15, 80Mar 08, 83[F27D, C21B]
4373320 Packing line for packing stacks of rectangular tinplate sheets on palletsExpiredApr 24, 81Feb 15, 83[B65B]
4366885 Protective strip for a road vehicle, and a road vehicle having such a stripExpiredSep 16, 80Jan 04, 83[B60R, F16F]
4332554 Shaft furnace having cooling platesExpiredJun 20, 80Jun 01, 82[F27D, C21B]
4305450 Apparatus for checking the operation of a plurality of liquid sprays in a continuous casting apparatusExpiredNov 26, 79Dec 15, 81[B22D]
4305678 Coupling for a mill rollExpiredOct 02, 79Dec 15, 81[F16B, F16D]
4294431 Method of providing and maintaining a wear-lining of a steel converter and a steel converter having such a liningExpiredJul 06, 79Oct 13, 81[C21B]
4292993 Closure plate for hot blast slide valvesExpiredNov 09, 79Oct 06, 81[F16K]
4291854 Rail system having wheel-engaged hydraulic piston-and-cylinder assembly, and such an assemblyExpiredNov 05, 79Sep 29, 81[B61L]
4290764 Method and apparatus for folding a cardboard sheet along a straight fold lineExpiredJun 15, 79Sep 22, 81[B65H]
4287983 Conveyors having a plurality of driven endless chainsExpiredJun 15, 79Sep 08, 81[B65G]
4261274 Deformation properties of the edge of a deep-drawn metal canExpiredApr 26, 79Apr 14, 81[B21D]
4255239 Method for making tinned steel plate free from surface graphiteExpiredJun 25, 79Mar 10, 81[C25D]
4234390 System for control of a coking plantExpiredMay 03, 78Nov 18, 80[C10B]
4231845 Equipment for emission-free operation of a coking plantExpiredJun 18, 79Nov 04, 80[C10B]
4230807 Method for regenerating a weak base anion exchangerExpiredJul 09, 76Oct 28, 80[B01D]
4219390 Method for the regeneration of a tinning electrolyteExpiredSep 20, 78Aug 26, 80[C25D]
4214735 Pressure measurement in a hood above a converter for manufacturing steelExpiredSep 01, 78Jul 29, 80[C21C]

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