Patent Assignment
Reel/Frame 058303/0425
Change of Name
Recorded: 2021-11-02
Pages: 11
Assignor
TEISEKI DRILLING CO., LTD.
Executed: 2021-10-01
Assignee
INPEX DRILLING CO., LTD.
7F LUCID SQUARE SHINJUKU EAST, 3-21, OKUBO, 1 CHOME, SHINJUKU-KU, TOKYO, 169-0072, JAPAN
Covered Property
(1)
Well Drilling Bit and Well Drilling Method Using the Same
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Jul 24, 2019
From: NAGANAWA, SHIGEMI; TUCHIYA, NORIYUSHI; SHIMADA, KUNIAKI
To: THE UNIVERSITY OF TOKYO; TOHOKU UNIVERSITY; TEISEKI DRILLING CO., LTD.
Reel/Frame 049852/0690 →
Corrective Assignment to Correct the Correct Name of an Inventor Previously Recorded at Reel: 049852 Frame: 0690. Assignor(S) Hereby Confirms the Assignment.
Sep 12, 2019
From: NAGANAWA, SHIGEMI; TUCHIYA, NORIYOSHI; SHIMADA, KUNIAKI
To: THE UNIVERSITY OF TOKYO; TOHOKU UNIVERSITY; TEISEKI DRILLING CO., LTD
Reel/Frame 050355/0484 →