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Patent Assignment Abstract of Title
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Total Assignments: 1
Patent #:
Issue Dt:
06/19/2018
Application #:
15466066
Filing Dt:
03/22/2017
Publication #:
Pub Dt:
12/07/2017
Inventors:
Shuanglei PENG, Deli GAO, Fan LIU, Zhengqiang DENG, Li ZHAO, Guancheng JIANG, Yinbo HE et al
Title:
DRILLING FLUID ADDITIVE COMPOSITION, AND OIL-BASED DRILLING FLUID AND USE THEREOF
Assignment: 1
Reel/Frame:
041886/0298Recorded: 04/06/2017Pages: 6
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors:
Exec Dt:
03/21/2017
Exec Dt:
03/21/2017
Exec Dt:
03/21/2017
Exec Dt:
03/21/2017
Exec Dt:
03/21/2017
Exec Dt:
03/21/2017
Exec Dt:
03/21/2017
Exec Dt:
03/21/2017
Exec Dt:
03/21/2017
Exec Dt:
03/21/2017
Exec Dt:
03/21/2017
Exec Dt:
03/21/2017
Assignee:
NO.18 FUXUE ROAD, CHANGPING DISTRICT
BEIJING, CHINA
Correspondent:
CALFEE HALTER & GRISWOLD LLP
THE CALFEE BUILDING, 1405 EAST SIXTH STREET
CLEVELAND, OH 44114-1607

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