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Deutsche Hydrierwerke AG

Deutsche H

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
GB457810A	Improvements in or relating to the use of substituted amide…	Expired / Lapsed	1935-06-06	—	0	Details
DE869867C	Process for the production of polycondensation products	Expired / Lapsed	1942-07-22	1953-03-09	0	Details
FR894199A	Superpolymeric condensation products and their preparation …	Expired / Lapsed	1943-04-22	1944-12-15	0	Details
FR894134A	Superpolymeric condensation products and their preparation	Expired / Lapsed	1943-04-20	1944-12-14	0	Details