Patent Assignment Abstract of Title
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Total Assignments:
1
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Patent #:
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Issue Dt:
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03/28/2017
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Application #:
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15258504
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Filing Dt:
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09/07/2016
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Inventors:
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Zhennan Zhang, Ning Wang, Guomin Yan, Baojiang Sun, Zhiyuan Wang, Xuerui Wang, Yang Zhao
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Title:
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SUBSEA WELLHEAD PRESSURE INDICATING AND AUTOMATIC ADJUSTING DEVICE FOR DEEP-WATER DUAL-GRADIENT DRILLING
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| NO. 66, CHANGJIANG WEST ROAD |
| HUANGDAO DISTRICT |
| QINGDAO, SHANDONG, CHINA |
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| YIZHOU LIU |
| CALFEE, HALTER & GRISWOLD LLP |
| 1405 E. 6TH STREET |
| CLEVELAND, OH 44114 |
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