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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03/29/2022
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Application #:
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17036007
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Filing Dt:
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09/29/2020
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Publication #:
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Pub Dt:
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01/14/2021
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Inventors:
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Xiaohu QUAN, Haiping FENG, Yihu WANG, Jianmin CHEN, Yu CAO, Weizhi YOU, Junling ZHAO et al
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Title:
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Synergist for water-based drilling fluid and preparation method therefor, water-based drilling fluid and application thereof
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Assignment:
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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ROOM 3008, WEST 3RD FLOOR, BUILDING 3, NO. 27 |
CHUANGXIN ROAD, SCIENCE PARK, CHANGPING DISTRICT |
BEIJING, CHINA |
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QIANQIAN WU |
64 BANK ST |
ABINGTON, MA 02351 |
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05/13/2024 03:52 AM
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