Patent Assignment Details
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| Reel/Frame: | 052291/0982 | |
| Pages: | 5 |
| | Recorded: | 04/02/2020 | | |
| Attorney Dkt #: | 35742.04036 |
| Conveyance: | ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
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Total properties:
5
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Patent #:
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Issue Dt:
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09/26/2017
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Application #:
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15400520
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Filing Dt:
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01/06/2017
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Title:
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POLYMER ELASTIC PARTICLE RESERVOIR PROTECTING AGENT AND DRILLING FLUID CONTAINING THE SAME
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Patent #:
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Issue Dt:
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07/11/2017
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Application #:
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15400547
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Filing Dt:
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01/06/2017
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Title:
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NANOMETER FILM STRUCTURED RESERVOIR PROTECTING AGENT, DRILLING FLUID CONTAINING THE SAME AND USE THEREOF IN LOW-PERMEABILITY RESERVOIRS
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Patent #:
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Issue Dt:
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06/20/2017
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Application #:
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15400555
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Filing Dt:
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01/06/2017
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Title:
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COMPOSITION COMPRISING A NANOMETER FILM STRUCTURED RESERVOIR PROTECTING AGENT AND A WATER BLOCK PREVENTING AGENT, AND DRILLING FLUID CONTAINING THE SAME AND USE THEREOF FOR DRILLING IN LOW-PERMEABILITY RESERVOIRS
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Patent #:
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Issue Dt:
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08/27/2019
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Application #:
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15809590
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Filing Dt:
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11/10/2017
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Publication #:
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Pub Dt:
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07/26/2018
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Title:
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WATER-BASED DRILLING FLUID FOR PROTECTING FRACTURED RESERVOIRS, AND PREPARATION METHOD AND USE THEREOF
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Patent #:
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Issue Dt:
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08/07/2018
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Application #:
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15809707
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Filing Dt:
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11/10/2017
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Publication #:
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Pub Dt:
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07/26/2018
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Title:
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WATER-BASED DRILLING FLUID FOR PROTECTING HIGH-PERMEABILITY RESERVOIRS, AND PREPARATION METHOD AND USE THEREOF
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Assignees
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| NO. 66, CHANGJIANG WEST ROAD |
| HUANGDAO DISTRICT, QINGDAO |
| SHANDONG, CHINA |
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| BUILDING 1, YARD 5, HUANGHE STREET |
| CHANGPING DISTRICT |
| BEIJING, CHINA 102206 |
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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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