Patent Assignment
Reel/Frame 052418/0722
Assignment of Assignor's Interest
Recorded: 2020-04-16
Pages: 5
Assignor
LANDMARK GRAPHICS CORPORATION
Executed: 2020-04-10
Assignee
HALLIBURTON ENERGY SERVICES, INC.
3000 N. SAM HOUSTON PARKWAY E., HOUSTON, TEXAS, 77032-3219
Covered Property
(1)
Method and Device for Hole Cleaning and Drilling Hydraulic Design
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Oct 5, 2018
From: ZHANG, FEIFEI; FILIPPOV, ANDREY; LU, JIANXIN
To: HALLIBURTON ENERGY SERVICES, INC.
Reel/Frame 047082/0386 →
Assignment of Assignor's Interest
Dec 20, 2018
From: HALLIBURTON ENERGY SERVICES, INC.
To: LANDMARK GRAPHICS CORPORATION
Reel/Frame 047830/0327 →