Patent Assignment
Reel/Frame 018774/0742
Assignment of Assignor's Interest
Recorded: 2007-01-05
Pages: 6
Assignors
PARK, YONG-CHUL
Executed: 2006-12-26
JEONG, WOO-SIK
Executed: 2006-12-26
HYUN, KWANG-CHUL
Executed: 2006-12-26
LEE, JANG-WON
Executed: 2006-12-26
KWON, IK-HYEON
Executed: 2006-12-28
Assignee
HYOSUNG CORPORATION
450, GONGDEOK-DONG, MAPO-GU, SEOUL 121-020, KOREA, REPUBLIC OF
Covered Property
(1)
Process for Refining Nitrogen Trifluoride Gas Using Alkali Earth Metal Exchanged Zeolite
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Address
Oct 18, 2018
From: HYOSUNG CORPORATION
To: HYOSUNG CORPORATION
Reel/Frame 047776/0052 →
Assignment of Assignor's Interest
Dec 21, 2018
From: HYOSUNG CORPORATION
To: HYOSUNG CHEMICAL CORPORATION
Reel/Frame 047841/0075 →
Assignment of Assignor's Interest
Mar 13, 2025
From: HYOSUNG CHEMICAL CORPORATION
To: HYOSUNG NEOCHEM CO., LTD.
Reel/Frame 070502/0433 →