Patent Assignment
Reel/Frame 065942/0434
Assignment of Assignor's Interest
Recorded: 2023-12-22
Pages: 7
Assignors
HUANG, JIANGSHUI
Executed: 2020-10-14
ZHOU, NANCY
Executed: 2020-10-12
LIN, LIJUN
Executed: 2020-10-14
Assignee
CNPC USA CORPORATION
2901 WILCREST DRIVE, SUITE 600, HOUSTON, TEXAS, 77042
Covered Property
(1)
Composition and Method for Improving the Production of Petroleum Hydrocarbons
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Dec 22, 2023
From: LIU, FUCHEN; WU, GUODONG; HUANG, BO
To: BEIJING HUAMEI, INC.
Reel/Frame 065942/0464 →
Assignment of Assignor's Interest
Jan 2, 2024
From: CNPC USA CORPORATION
To: CNPC USA CORPORATION; BEIJING HUAMEI, INC.; CHINA NATIONAL PETROLEUM CORPORATION
Reel/Frame 065994/0796 →
Assignment of Assignor's Interest
Jan 2, 2024
From: BEIJING HUAMEI, INC.
To: CNPC USA CORPORATION; BEIJING HUAMEI, INC.; CHINA NATIONAL PETROLEUM CORPORATION
Reel/Frame 065994/0928 →