← Back to Companies

DuPont Rayon Co

DuPont Ray

Active Patents

0

Total Holdings

4

Patent Holdings

Filter in Explorer →

Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2045722A	Manufacture of thread	Expired / Lapsed	1933-04-19	1936-06-30	0	Details
US1975153A	Method of producing multicolored threads	Expired / Lapsed	1932-02-03	1934-10-02	0	Details
US1918816A	Process for manufacturing artificial threads	Expired / Lapsed	1928-08-03	1933-07-18	0	Details
US1856713A	Lubrication of textile fibers	Expired / Lapsed	1928-04-27	1932-05-03	0	Details