Patent Assignment
Reel/Frame 057757/0427
Assignment of Assignor's Interest
Recorded: 2021-10-12
Pages: 3
Assignors
DUAN, WEIDONG
Executed: 2021-08-25
ZHANG, GUOFU
Executed: 2021-08-25
WEI, YU
Executed: 2021-08-25
Assignee
HEBEI CAIKE CHEMICAL CO., LTD.
HIGHWAY 105 EAST, DAZHANG VILLAGE, DONGGUANG COUNTY CANGZHOU, HEBEI 061600 (CN), CANGZHOU, CHINA
Covered Property
(1)
Method for Simultaneously Preparing Iron Oxide Red Pigment and Aromatic Amine
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.