Hagen Batterie AG

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5917251 Method and circuit arrangement to cover peak energy demands in electrical alternating or three-phase current networksExpiredFeb 12, 98Jun 29, 99[H02J]
5848468 Method of forming metallic current conducting lugs at electrode plates of accumulatorsExpiredSep 29, 95Dec 15, 98[H01R]
5561001 Accumulator with degassing channelExpiredApr 28, 95Oct 01, 96[H01M]
5469042 Charging monitor for electrical accumulatorsExpiredAug 03, 93Nov 21, 95[H01M]
5435182 Method and apparatus for determining at least one physical parameter of accumulator electrode platesExpiredMar 30, 94Jul 25, 95[G01N]
5415219 Grid casting mold for the casting of lead grids for accumulators and methods for its manufactureExpiredJul 20, 93May 16, 95[B22C]
5364714 Terminal post for a storage batteryExpiredApr 07, 93Nov 15, 94[H01M]
5139902 Electrode for electrochemical cellsExpiredJul 06, 90Aug 18, 92[H01M]
5114812 Electrodes for primary and secondary electric cellsExpiredJul 09, 90May 19, 92[H01M]
4988418 Method of electrically measuring the concentration of acidsExpiredMar 14, 89Jan 29, 91[G01N]
RE33133 Negative electrode for lead accumulatorsExpiredNov 18, 87Dec 19, 89[H01M]
4788113 Sheet material and separator envelopes manufactured therefrom for the electrode plates of batteriesExpiredJun 24, 87Nov 29, 88[H01M]
4781997 Storage battery that is protected against the discharge of acidExpiredDec 05, 86Nov 01, 88[H01M]
4778479 Method of manufacturing accumulators having accumulator plate sets and an accumulator manufactured in accordance with this methodExpiredMar 17, 87Oct 18, 88[H01M]
4760001 Negative electrode for lead accumulatorsExpiredMar 17, 87Jul 26, 88[H01M]
4657799 Sheet material for the production of separator pockets for lead accumulatorsExpiredFeb 14, 86Apr 14, 87[B32B]
4597841 Process of recovering lead from old lead accumulator scrap and reduction plate for this processExpiredJan 23, 85Jul 01, 86[C25C]
4554228 Negative electrode for lead accumulatorsExpiredApr 06, 84Nov 19, 85[H01M]

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