Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Nokia Spain SA
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Alcatel Espana SA
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Application filed by Alcatel Espana SAfiledCriticalAlcatel Espana SA
Publication of ES211430A2publicationCriticalpatent/ES211430A2/es
Mejoras en la patente pricipal nº 198.995 por método de preparar polvos magnéticos partiendo del compuesto Bayer caracterizado porque la reducción de la sustancia Bayer se efectúa sólo parcialmente preferiblemente hasta la generación de la magnetita ferromagnética Fe3O4.
ES0211430A1952-10-171953-09-29Un método de prepara polvos magnéticos partiendo del compuesto bayer
ExpiredES211430A2
(es)