Patent Assignment
Reel/Frame 064057/0370
Change of Name
Recorded: 2023-06-22
Pages: 4
Assignor
NATIONAL OILWELL DHT, L.P.
Executed: 2021-12-31
Assignee
NATIONAL OILWELL VARCO, L.P.
7909 PARKWOOD CIRCLE DRIVE, HOUSTON, TEXAS, 77036
Covered Properties
(2)
Drilling Oscillation Systems and Shock Tools for Same
Patent:
11,220,866 →
Application:
15/849,471 →
Publication:
US 2018/0171719
PCT:
PCT/US2017/067734 ↗
Methods for Increasing the Amplitude of Reciprocal Extensions and Contractions of a Shock Tool for Drilling Operations
Related Assignments
(4)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
May 24, 2019
From: DONALD, SEAN MATTHEW; SCOTT, ANDREW LAWRENCE; YANG, YONG; KVASNYTSIA, ROMAN
To: NATIONAL OILWELL VARCO, L.P.
Reel/Frame 049275/0037 →
Assignment of Assignor's Interest
May 24, 2019
From: NATIONAL OILWELL VARCO, L.P.
To: NATIONAL OILWELL DHT, L.P.
Reel/Frame 049275/0134 →
Assignment of Assignor's Interest
Nov 30, 2021
From: DONALD, SEAN MATTHEW; SCOTT, ANDREW LAWRENCE; YANG, YONG; KVASNYTSIA, ROMAN
To: NATIONAL OILWELL VARCO, L.P.
Reel/Frame 058239/0676 →
Assignment of Assignor's Interest
Nov 30, 2021
From: NATIONAL OILWELL VARCO, L.P.
To: NATIONAL OILWELL DHT, L.P.
Reel/Frame 058239/0731 →