MOLTECH INVENT S.A., A COMPANY OF LUXEMBOURG

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4737253 Aluminium reduction cellExpiredAug 13, 86Apr 12, 88[C25C]
4737254 Linings for aluminium reduction cellsExpiredAug 28, 86Apr 12, 88[C25C]
4668351 Method of producing aluminumExpiredJul 12, 85May 26, 87[C22B, C25C]
4647357 Aluminium electrolytic reduction cell liningsExpiredJun 06, 84Mar 03, 87[C25C, C25B]
4613418 Aluminium reduction cellsExpiredNov 28, 84Sep 23, 86[C25C]
4612103 Aluminium reduction cellsExpiredNov 28, 84Sep 16, 86[C25C]
4500643 Shaped refractory metal boride articles and method of making themExpiredDec 27, 83Feb 19, 85[C04H]
4460440 Electrolytic production of aluminum and cell thereforExpiredJun 01, 83Jul 17, 84[C25C]
4443313 Electrolytic reduction cellsExpiredJun 23, 82Apr 17, 84[C25C]

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