SKF Steel Engineering Aktiebolag

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4936874 Method of manufacturing a gas suitable for the production of energyExpiredDec 04, 87Jun 26, 90[C10K, C10J]
4917763 Method of recovering chemical from spent pulp liquorsExpiredJun 10, 88Apr 17, 90[D21C]
4808795 Method of continuously overheating large volumes of gasExpiredAug 05, 87Feb 28, 89[H05B]
4718362 Waste destructionExpiredApr 09, 86Jan 12, 88[F23G]
4710269 Recovering chemicals from spent pulp liquorsExpiredJan 27, 86Dec 01, 87[D21C]
4706943 Connection device for plasma generatorsExpiredNov 12, 85Nov 17, 87[F27D]
4692209 Recovery of chemicals from pulp waste liquorExpiredMay 27, 86Sep 08, 87[D21C]
4687513 Condensation of zinc vaporExpiredJun 09, 86Aug 18, 87[C22B]
4652725 Method and apparatus for heating a first gas flow with a second gas flowExpiredFeb 16, 84Mar 24, 87[B23K]
4643742 Method for cooling gases and removing dust from themExpiredMar 28, 85Feb 17, 87[B01D]
4638489 Method and means for use in the installation of plasma generators in shaft furnacesExpiredMar 28, 85Jan 20, 87[H05H]
4635573 Method for destroying refuseExpiredApr 05, 85Jan 13, 87[F23G]
4624059 Method and plant for cooling pelletsExpiredOct 29, 84Nov 25, 86[F26B]
4615285 Method of destroying hazardous wastesExpiredApr 05, 85Oct 07, 86[F23G]
4613364 Method and means for manufacturing a preformed metal productExpiredFeb 11, 85Sep 23, 86[C22B]
4611110 Method and apparatus for connecting a plasma generator to a reactorExpiredMar 30, 84Sep 09, 86[B23K]
4611332 Transferred electric arcExpiredAug 14, 84Sep 09, 86[H05B]
4601752 Method of manufacturing metals and/or generating slagExpiredApr 05, 85Jul 22, 86[C22C]
4601786 Recovery of chemicals from pulp waste liquor with plasma generator heatingExpiredApr 06, 84Jul 22, 86[D21C]
4594236 Method of manufacturing calcium carbide from powdered lime and/or limestoneExpiredAug 25, 83Jun 10, 86[C01B]

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