Patent Assignment
Reel/Frame 018776/0670
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 and Impregnated 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 →