Patent Assignment Details
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For pending or abandoned applications please consult USPTO staff.
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| Reel/Frame: | 048581/0594 | |
| Pages: | 4 |
| | Recorded: | 03/13/2019 | | |
| Attorney Dkt #: | 35742/04069 |
| 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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09/10/2019
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Application #:
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15952917
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Filing Dt:
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04/13/2018
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Publication #:
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Pub Dt:
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08/08/2019
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Title:
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STRONG PLUGGING DRILLING FLUID SUITABLE FOR SHALE GAS WELLS AND PREPARATION METHOD THEREOF
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Assignee
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| 8 XINDU AVENUE, XINDU DISTRICT |
| SICHUAN PROVINCE |
| CHENGDU CITY, CHINA 610500 |
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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 44114-1607
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