Patent Assignment
Reel/Frame 074587/0171
Assignment of Assignor's Interest
Recorded: 2026-05-07
Pages: 3
Assignor
ST PHARM CO., LTD.
Executed: 2026-03-25
Assignee
HYOSUNG CHEMICAL CORPORATION
235, BANPO-DAERO, SEOCHO-GU, SEOUL, 06578, KOREA, REPUBLIC OF
Covered Property
(1)
Polyketone Polymerization Catalyst
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Apr 25, 2016
From: SHIM, JAE YOON; KIM, SUN KUE; CHO, HAE SOUK; CHOI, JI HWAN
To: HYOSUNG CORPORATION; ST PHARM CO., LTD.
Reel/Frame 038510/0056 →
Change of Address
Oct 18, 2018
From: HYOSUNG CORPORATION
To: HYOSUNG CORPORATION
Reel/Frame 047269/0098 →
Assignment of Assignor's Interest
Dec 21, 2018
From: HYOSUNG CORPORATION
To: HYOSUNG CHEMICAL CORPORATION
Reel/Frame 047841/0075 →