Chemische Fabrik

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4318705 Process for improving the lightfastness of conventionally dyed leatherExpiredSep 06, 79Mar 09, 82[D06P]
4312998 Method for making N-substituted acrylamidesExpiredMay 02, 80Jan 26, 82[C07C]
4286004 Antistatic polyurethane foams and carpet backings made therefromExpiredMay 07, 80Aug 25, 81[C08G, B32B]

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