KABUSHIKI KAISHA KOBE SEIKO

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6323120 Method of forming a wiring filmExpiredMar 09, 00Nov 27, 01[H01L]
4889567 High strength and high toughness steel bar, rod and wire and the process of producing the sameExpiredJul 01, 88Dec 26, 89[C22C, C21B]
4671749 Screw compressorExpiredJul 03, 85Jun 09, 87[F04C]
4615376 Method and device for electromagnetically regulating pouring rate in continuous castingExpiredMar 25, 85Oct 07, 86[B22D]
4577673 Guide rollExpiredJul 12, 83Mar 25, 86[B22D]
4571480 Flux cored wire electrodes for self-shielded arc weldingExpiredFeb 27, 84Feb 18, 86[B23K]
4515203 Continuous steel casting processExpiredDec 14, 83May 07, 85[B22D]
4503319 Heater for hot isostatic pressing apparatusExpiredNov 22, 82Mar 05, 85[H05B, F27B, F27D]
4481033 High Mn-Cr non-magnetic steelExpiredApr 02, 82Nov 06, 84[C22C]
4475668 Metering feeder for liquidExpiredMay 14, 82Oct 09, 84[B67D]
4473481 Lubricant film for preventing galling of sliding metal surfacesExpiredDec 07, 82Sep 25, 84[C10M]
4455726 Chamfering apparatus for end faces of tubular membersExpiredSep 14, 81Jun 26, 84[B23P]
4456381 Closed type mixing/kneading apparatusExpiredFeb 17, 81Jun 26, 84[B01F]
4445350 Extrusion method using hot lubricantExpiredNov 27, 81May 01, 84[B21C]
4412453 Method for detecting brazing defects in plate-fin type heat exchangersExpiredOct 15, 81Nov 01, 83[G01N]
4392267 Apparatus for continuously pickling the outer surfaces of tubular materialsExpiredOct 01, 81Jul 12, 83[B08B]

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