Patent Assignment Details
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For pending or abandoned applications please consult USPTO staff.
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| Reel/Frame: | 060474/0754 | |
| Pages: | 6 |
| | Recorded: | 07/11/2022 | | |
| Attorney Dkt #: | 35742.04150 |
| Conveyance: | ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
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Total properties:
1
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Patent #:
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Issue Dt:
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02/14/2023
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Application #:
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17696549
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Filing Dt:
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03/16/2022
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Publication #:
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Pub Dt:
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06/30/2022
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Title:
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AMPHIPHILIC BLOCK POLYMER ULTRALOW-PERMEABILITY AGENT AND INTELLIGENT TEMPORARY PLUGGING TYPE WATER-BASED DRILLING FLUID
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Assignee
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| NO. 18 FUXUE ROAD |
| CHANGPING DISTRICT |
| BEIJING, CHINA 102249 |
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Correspondence name and address
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YIZHOU LIU
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CALFEE, HALTER & GRISWOLD LLP
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1405 EAST SIXTH STREET
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CLEVELAND, OH 44144-1607
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05/14/2024 06:57 PM
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