S.A. ACEC-UNION MINIERE N.V., A COMPANY UNDER THE LAW OF BELGIUM

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4959085 Process and installation for the treatment of a stream of gas containing pyrophoric dustExpiredFeb 22, 89Sep 25, 90[B01D]
4952368 Zinc alloys for electrochemical battery cansExpiredSep 22, 89Aug 28, 90[C22C]
4946575 Metallic anodes manufactured from molten copperExpiredDec 13, 88Aug 07, 90[C25C]
4942023 Metal extraction process with substituted 8-hydroxyquinolineExpiredDec 21, 88Jul 17, 90[C01G]
4920020 Zinc powder for alkaline batteriesExpiredJan 04, 89Apr 24, 90[H01M, C22C]
4657464 Process and apparatus for stacking spent anodesExpiredApr 05, 85Apr 14, 87[B65G]
4632699 Process for preparing zinc powder for alkaline batteriesExpiredApr 03, 85Dec 30, 86[C22C]
4577401 Process and apparatus for separating a suspension bar from an electrodeExpiredAug 04, 83Mar 25, 86[B23P, H01R]
4567027 Process for defluorinating an acid sulphate solutionExpiredJul 16, 84Jan 28, 86[C01G]
4526768 Process for producing sulphuric acidExpiredNov 14, 83Jul 02, 85[C01B]
4481963 Drop collector for an apparatus for conveying electrodesExpiredJun 08, 83Nov 13, 84[B08B]
4451289 Process for extracting non-ferrous metals from iron-bearing scrapsExpiredNov 20, 81May 29, 84[C22B]
4432951 Process for separating germanium from an aqueous solutionExpiredSep 22, 82Feb 21, 84[C01G, B01D]
4432952 Process for separating germanium from an aqueous solution by means of an alphahydroxyoximeExpiredSep 22, 82Feb 21, 84[C01G, B01D]
4419338 Liquid-liquid extractionExpiredDec 29, 81Dec 06, 83[B01D]
4417953 Process and apparatus for separating an electrolytic deposit from both sides of a cathodeExpiredJul 27, 81Nov 29, 83[C25D]
4392934 Process and apparatus for replacing cathodesExpiredJul 10, 81Jul 12, 83[C25D, C25C]
4393296 Apparatus for the continuous manufacture of metallic anodes from molten metalExpiredMar 09, 81Jul 12, 83[B23K]
4303227 Apparatus for cutting a moving metallic strip into uniform piecesExpiredDec 21, 79Dec 01, 81[B23K]
4298053 Casting belts for machines for the continuous casting of metalsExpiredMar 07, 75Nov 03, 81[B23K, B22D]

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