Conradty GmbH & Co. Metallelektroden KG

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4814055 Current feeder for electrodesExpiredJul 31, 87Mar 21, 89[C25B]
4743351 Coated valve metal anode for electrolytic extraction of metals or metal oxidesExpiredFeb 20, 85May 10, 88[C25B]
RE32561 Coated metal anode for the electrolytic recovery of metalsExpiredJun 11, 84Dec 15, 87[C25B]
4695355 Electrode for membrane electrolysisExpiredMay 13, 86Sep 22, 87[C25B]
4661232 Electrode for electrolytic extraction of metals or metal oxidesExpiredFeb 20, 85Apr 28, 87[C25C, C25B]
4642173 Cell having coated valve metal electrode for electrolytic galvanizingExpiredMay 20, 85Feb 10, 87[C25D, C25B]
4619752 Electrode for electrolytic extraction of metals or metal oxidesExpiredFeb 20, 85Oct 28, 86[C25C, H01R]
4460450 Coated valve metal anode for the electrolytic extraction of metals or metal oxidesExpiredFeb 09, 83Jul 17, 84[C05C, C05B]
4391695 Coated metal anode or the electrolytic recovery of metalsExpiredFeb 03, 81Jul 05, 83[C25B]
4379742 Gas-generating metal electrode for electrochemical processesExpiredFeb 23, 81Apr 12, 83[C25B]
4295942 Process for preparing manganese oxideExpiredFeb 15, 80Oct 20, 81[C25B]

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