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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11/10/2020
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Application #:
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16742279
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Filing Dt:
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01/14/2020
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Inventors:
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Yang Bai, Pingya Luo, Yan Cheng, Cheng Li, Hao Zhang, Guojun Li
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Title:
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MODIFIED NANO-SILICA PLUGGING AGENT, WATER-BASED DRILLING FLUID, AND PREPARATION METHOD AND USE THEREOF
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 8 XINDU AVENUE, XINDU DISTRICT, SICHUAN PROVINCE |
| CHENGDU CITY, CHINA 610500 |
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| VOLPE AND KOENIG P.C. |
| 30 SOUTH 17TH STREET, 18TH FLOOR |
| PHILADELPHIA, PA 19103 |
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