Kurosaki Refractories Co., Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5415692 Apparatus for applying material against the wall of a molten metal discharging holeExpiredSep 08, 93May 16, 95[B05B]
5259880 Projection molten impeller for concave section used in apparatusExpiredJul 17, 91Nov 09, 93[B05D, B05B, F27D]
5167988 Ceramic coating bonded to iron memberExpiredJul 26, 91Dec 01, 92[B05D]
4984904 Apparatus for continuously measuring temperature of molten metal and method for making sameExpiredApr 11, 89Jan 15, 91[G01K]
4975314 Ceramic coating bonded to metal memberExpiredAug 25, 88Dec 04, 90[B32B]
4954535 High-durability plate brick for sliding gate nozzle apparatusExpiredSep 30, 88Sep 04, 90[C08K]
4917276 Sliding gate nozzle for special steelExpiredJul 11, 88Apr 17, 90[B22D]
4867932 Process of making a casting nozzleExpiredAug 25, 87Sep 19, 89[B29C, B22D]
4839317 Lightweight heat-insulating tundish coating materialExpiredOct 06, 87Jun 13, 89[C04B]
4832771 Method for bonding ceramicsExpiredMar 28, 88May 23, 89[B32B]
4832888 Method for producing high-density silicon nitride sintered productExpiredAug 20, 87May 23, 89[C04B]
4779775 Casting nozzleExpiredAug 19, 86Oct 25, 88[B22D]
4775504 Process for producing refractory plate for sliding nozzleExpiredAug 13, 86Oct 04, 88[C04B]
4746038 Gas-blow casting nozzleExpiredJul 07, 86May 24, 88[B22D]
4737327 Process for producing silicon carbide sintered productExpiredDec 15, 86Apr 12, 88[C04B]
4735923 Erosion-resistant silicon carbide composite sintered materialsExpiredAug 13, 86Apr 05, 88[C04B]
4693401 Apparatus for compressively holding casting nozzlesExpiredJul 26, 85Sep 15, 87[B22D]
4683151 Method for application of refractory spray materialExpiredOct 21, 85Jul 28, 87[B05D]
4680239 Exhaust device having a heat-insulating layer comprising inorganic microballoons and a refractory layer and method of manufacturing sameExpiredJan 10, 86Jul 14, 87[B05D, B32B]
4664858 Manufacturing method of a ceramics body having through holesExpiredAug 13, 85May 12, 87[C08J, B28B, B29C]

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