PLASMAINVENT AG

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4900639 Cladding of bearing metal and process for production thereofExpiredApr 22, 88Feb 13, 90[B32B]
4898785 CR.sub.2 O.sub.3 -protective coating and process for its manufactureExpiredMay 22, 89Feb 06, 90[B05D]
4809947 Flow regulation valveExpiredJul 28, 87Mar 07, 89[F16K]
4808042 Powder feederExpiredMay 22, 85Feb 28, 89[B65G]
4808487 Protection layerExpiredJan 15, 87Feb 28, 89[B32B]
4740112 Powder feed control systemExpiredAug 27, 82Apr 26, 88[B65G]
4661682 Plasma spray gun for internal coatingsExpiredAug 15, 85Apr 28, 87[B23K]
4596718 Vacuum plasma coating apparatusExpiredJun 18, 85Jun 24, 86[B05D]
4371563 Fine particle filter system having low pressure drop for gaseous flow systemsExpiredJun 24, 81Feb 01, 83[B05D]
4328257 System and method for plasma coatingExpiredNov 26, 79May 04, 82[B05D]
4227835 Apparatus for the metered supply of powder to a powder processing unitExpiredFeb 21, 79Oct 14, 80[B65G]
4199104 Plasma spraying apparatusExpiredJan 21, 77Apr 22, 80[B05B]

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