Patent Assignment
Reel/Frame 023453/0952
Assignment of Assignor's Interest
Recorded: 2009-10-27
Pages: 2
Assignors
CHUNG, YOUNG MIN
Executed: 2009-09-04
KIM, TAE JIN
Executed: 2009-09-04
KIM, YONG SEUNG
Executed: 2009-09-07
KIM, HEE SOO
Executed: 2009-09-04
LEE, HO WON
Executed: 2009-09-01
LEE, SEONG JUN
Executed: 2009-09-04
OH, SEUNG HOON
Executed: 2009-09-07
SONG, IN KYU
Executed: 2009-09-01
JUNG, JI CHUL
Executed: 2009-09-01
Assignee
SK ENERGY CO., LTD.
99 SEORIN-DONG, JONGRO-GU, SEOUL 110-110, KOREA, REPUBLIC OF
Covered Property
(1)
Zinc Ferrite Catalysts, Method of Preparing Thereof and Method of Preparing 1,3-Butadiene Using Thereof
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name
Jul 14, 2011
From: SK ENERGY CO., LTD.
To: SK INNOVATION CO., LTD.
Reel/Frame 026619/0330 →
Assignment of Assignor's Interest
Jul 15, 2011
From: SK INNOVATION CO., LTD.
To: SK GLOBAL CHEMICAL CO., LTD.
Reel/Frame 026598/0963 →
Corrective Assignment to Correct the Incorrect Patent Number 7448700 and Replace It with 7488700 Previously Recorded on Reel 026619 Frame 0330. Assignor(S) Hereby Confirms the Change of Name.
Apr 11, 2016
From: SK ENERGY CO., LTD.
To: SK INNOVATION CO., LTD.
Reel/Frame 038406/0201 →
Change of Address
Sep 2, 2022
From: SK GLOBAL CHEMICAL CO., LTD
To: SK GLOBAL CHEMICAL CO., LTD
Reel/Frame 061371/0328 →
Change of Name
Sep 2, 2022
From: SK GLOBAL CHEMICAL CO., LTD
To: SK GEO CENTRIC CO., LTD.
Reel/Frame 061371/0332 →