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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11/01/2022
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Application #:
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17511275
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Filing Dt:
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10/26/2021
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Publication #:
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Pub Dt:
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09/15/2022
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Inventors:
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Yang BAI, Daoxiong LI, Pingya LUO, Wen XU, Wenzhe LI, Lingfeng WU, Haibo LIANG, Dezhi LIU et al
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Title:
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OIL-BASED DRILLING FLUID COMPOSITION, OIL-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 |
| CHENDU CITY, CHINA 610500 |
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| YIZHOU LIU |
| CALFEE, HALTER & GRISWOLD LLP |
| 1405 EAST SIXTH STREET |
| CLEVELAND, OH 44114-1607 |
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