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Patent Assignment Abstract of Title
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Total Assignments: 1
Patent #:
10544353
Issue Dt:
01/28/2020
Application #:
15956617
Filing Dt:
04/18/2018
Publication #:
20190031945
Pub Dt:
01/31/2019
Inventors:
Gang Guo, Zhongxing Li, Lijun Mu, Zhenfeng Zhao, Kuangsheng Zhang, Xiaojia Xue, Jiang Wu et al
Title:
SURFACTANT THAT CHANGES THE WETTABILITY OF TIGHT SANDSTONE AND ITS PREPARATION METHOD AND APPLICATION
Assignment: 1
Reel/Frame:
046405/0640Recorded: 07/19/2018Pages: 8
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors:
GUO, GANG
Exec Dt:
04/12/2018
LI, ZHONGXING
Exec Dt:
04/12/2018
MU, LIJUN
Exec Dt:
04/12/2018
ZHAO, ZHENFENG
Exec Dt:
04/12/2018
ZHANG, KUANGSHENG
Exec Dt:
04/12/2018
XUE, XIAOJIA
Exec Dt:
04/12/2018
WU, JIANG
Exec Dt:
04/12/2018
LI, KAI
Exec Dt:
04/12/2018
FAN, HUABO
Exec Dt:
04/12/2018
LIU, JIN
Exec Dt:
04/12/2018
ZHOU, XIAOQUN
Exec Dt:
04/12/2018
XIAN, CHENG
Exec Dt:
04/12/2018
Assignee:
PETROCHINA COMPANY LIMITED
9 DONGZHIMEN NORTH STREET
DONGCHENG DISTRICT
BEIJING, CHINA 100007
Correspondent:
WEAVER AUSTIN VILLENEUVE & SAMPSON LLP
P.O. BOX 70250
OAKLAND, CA 94612-0250

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