Patent Assignment
Reel/Frame 047830/0327
Assignment of Assignor's Interest
Recorded: 2018-12-20
Pages: 4
Assignor
HALLIBURTON ENERGY SERVICES, INC.
Executed: 2018-10-31
Assignee
LANDMARK GRAPHICS CORPORATION
3000 N. SAM HOUSTON PARKWAY E., HOUSTON, TEXAS, 77032
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
Apr 16, 2020
From: LANDMARK GRAPHICS CORPORATION
To: HALLIBURTON ENERGY SERVICES, INC.
Reel/Frame 052418/0722 →