Patent Assignment Details
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| Reel/Frame: | 044301/0086 | |
| Pages: | 4 |
| | Recorded: | 12/05/2017 | | |
| Attorney Dkt #: | 35742/04057 |
| 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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03/27/2018
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Application #:
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15795792
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Filing Dt:
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10/27/2017
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Title:
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DEEP-WELL POLYSULFONATE DRILLING FLUID AND PREPARATION METHOD THEREOF
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Assignee
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| 8 XINDU AVENUE, XINDU DISTRICT |
| CHENGDU CITY, SICHUAN PROVINCE, CHINA 610500 |
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Correspondence name and address
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CALFEE HALTER & GRISWOLD LLP
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THE CALFEE BUILDING, 1405 EAST SIXTH STREET
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CLEVELAND, OH 44114
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