IP Library › Assignment 047082/0386
Patent Assignment
Reel/Frame 047082/0386

Assignment of Assignor's Interest

Recorded: 2018-10-05 Pages: 5
Assignors
ZHANG, FEIFEI
Executed: 2016-05-03
FILIPPOV, ANDREY
Executed: 2016-05-03
LU, JIANXIN
Executed: 2016-05-03
Assignee
HALLIBURTON ENERGY SERVICES, INC.
3000 N. SAM HOUSTON PARKWAY E, HOUSTON, TEXAS, 77032
Covered Property (1)
Method and Device for Hole Cleaning and Drilling Hydraulic Design
Application: 16/091,036 →
Publication: US 2019/0120002
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Dec 20, 2018
From: HALLIBURTON ENERGY SERVICES, INC.
To: LANDMARK GRAPHICS CORPORATION
Reel/Frame 047830/0327 →
Assignment of Assignor's Interest Apr 16, 2020
From: LANDMARK GRAPHICS CORPORATION
To: HALLIBURTON ENERGY SERVICES, INC.
Reel/Frame 052418/0722 →