Patent Assignment Abstract of Title
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Total Assignments:
1
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Patent #:
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Issue Dt:
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01/26/2016
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Application #:
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13628020
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Filing Dt:
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09/26/2012
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Publication #:
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Pub Dt:
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03/28/2013
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Inventors:
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Xiaohua YANG, Lin WANG, Yongxue LIN, Sheng LI, Long CHAI, Xiaoqiang DONG
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Title:
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Filtration Control Agent And A Drilling Fluid Containing The Same
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| NO. 22 CHAOYANGMEN NORTH STREET |
| CHAOYANG DISTRICT |
| BEIJING, CHINA 100728 |
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| NORTH STAR TIMES TOWER, NO. 8 BEICHEN DONG ROAD |
| CHAOYANG DISTRICT |
| BEIJING, CHINA 100101 |
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| SQUIRE SANDERS (US) LLP |
| 275 BATTERY STREET, SUITE 2600 |
| SAN FRANCISCO, CA 94111 |
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