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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Degussa GmbH, Deutsche Gold und Silber ScheideanstaltfiledCriticalDegussa GmbH
Publication of ES211701A1publicationCriticalpatent/ES211701A1/es
Procedimiento para la fabricación de pigmentos de negro de humo del alta calidad caracterizado porque negros de humo en especial negros de humo activos procedentes de fracciones superiores del alquitrán de hulla son expuestos en dispersiones acuosas a la acción de reacciones que producen gases.
ES0211701A1952-10-161953-10-16Un procedimiento para la fabricacion de pigmentos de negro de humo de alta calidad
ExpiredES211701A1
(es)