Patent Assignment Details
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| Reel/Frame: | 047555/0106 | |
| Pages: | 5 |
| | Recorded: | 11/20/2018 | | |
| Attorney Dkt #: | RAP3-PT117 |
| 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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07/13/2021
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Application #:
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16196456
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Filing Dt:
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11/20/2018
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Publication #:
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Pub Dt:
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04/16/2020
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Title:
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FILTRATE REDUCER FOR TEMPERATURE-RESISTANT CALCIUM-RESISTANT WATER-BASED DRILLING FLUID USED IN OIL AND GAS RESERVOIR PROTECTION, DRILLING FLUID, AND USES THEREOF
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Assignees
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| BLDG. 1, YARD 5, HUANGHE STREET, |
| CHANGPING DISTRICT |
| BEIJING, CHINA 102206 |
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| NO. 66, CHANGJIANG WEST ROAD, HUANGDAO DISTRICT |
| SHANDONG PROVINCE |
| QINGDAO, CHINA 266580 |
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Correspondence name and address
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VOLPE AND KOENIG, P.C.
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DUANE MORRIS PLAZA
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30 SOUTH 17TH STREET, 18TH FLOOR
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PHILADELPHIA, PA 19103
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