Patent Assignment
Reel/Frame 074390/0210
Assignment of Assignor's Interest
Recorded: 2026-04-16
Pages: 4
Assignor
CNPC USA CORPORATION
Executed: 2023-11-14
Assignees
CNPC USA CORPORATION
2901 WILCREST DRIVE, SUITE 600, HOUSTON, TEXAS, 77042
BEIJING HUAMEI, INC.
NO. 23 TAIYANGGONG SOUTH ST., CHAO YANG DISTRICT, BEIJING, 102200, CHINA
CHINA NATIONAL PETROLEUM CORPORATION
NO. 9 DONGZHIMEN NORTH STREET, DONGCHENG DISTRICT, BEIJING, 100007, CHINA
Covered Property
(1)
Composition and Method for Improving the Production of Petroleum Hydrocarbons
Application:
19/230,783 →
Publication:
US 2025/0297154
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Apr 16, 2026
From: BEIJING HUAMEI, INC.
To: CNPC USA CORPORATION; BEIJING HUAMEI, INC.; CHINA NATIONAL PETROLEUM CORPORATION
Reel/Frame 074390/0244 →
Assignment of Assignor's Interest
Apr 16, 2026
From: LIU, FUCHEN; WU, GUODONG; HUANG, BO
To: BEIJING HUAMEI INC.
Reel/Frame 074390/0139 →
Assignment of Assignor's Interest
Apr 16, 2026
From: HUANG, JIANGSHUI; ZHOU, NANCY; LIN, LIJUN
To: CNPC USA CORPORATION
Reel/Frame 074390/0001 →