skip navigationU S P T O SealUnited States Patent and Trademark Office AOTW logo
Home|Site Index|Search|Guides|Contacts|eBusiness|eBiz alerts|News|Help
Assignments on the Web > Patent Query
Patent Assignment Abstract of Title
NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Total Assignments: 4
Patent #:
10392552
Issue Dt:
08/27/2019
Application #:
15809590
Filing Dt:
11/10/2017
Publication #:
20180208823
Pub Dt:
07/26/2018
Inventors:
Jinsheng SUN, Kaihe LV, Jingping LIU
Title:
WATER-BASED DRILLING FLUID FOR PROTECTING FRACTURED RESERVOIRS, AND PREPARATION METHOD AND USE THEREOF
Assignment: 1
Reel/Frame:
044446/0012Recorded: 12/20/2017Pages: 3
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors:
SUN, JINSHENG
Exec Dt:
11/04/2017
LV, KAIHE
Exec Dt:
11/04/2017
LIU, JINGPING
Exec Dt:
11/04/2017
Assignee:
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
NO. 66, CHANGJIANG WEST ROAD
HUANGDAO DISTRICT
QINGDAO, SHANDONG, CHINA 266580
Correspondent:
CALFEE HALTER & GRISWOLD LLP
THE CALFEE BUILDING, 1405 EAST SIXTH STREET
CLEVELAND, OH 44114
Assignment: 2
Reel/Frame:
052291/0982Recorded: 04/02/2020Pages: 5
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor:
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
Exec Dt:
01/25/2020
Assignees:
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
NO. 66, CHANGJIANG WEST ROAD
HUANGDAO DISTRICT, QINGDAO
SHANDONG, CHINA
CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED
BUILDING 1, YARD 5, HUANGHE STREET
CHANGPING DISTRICT
BEIJING, CHINA 102206
Correspondent:
YIZHOU LIU
CALFEE, HALTER & GRISWOLD LLP
1405 EAST SIXTH STREET
CLEVELAND, OH 44114-1607
Assignment: 3
Reel/Frame:
053458/0387Recorded: 08/11/2020Pages: 5
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors:
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
Exec Dt:
07/17/2020
CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED
Exec Dt:
07/17/2020
Assignees:
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
NO. 66, CHANGJIANG WEST ROAD
HUANGDAO DISTRICT, QINGDAO
SHANDONG, CHINA
CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED
BUILDING 1, YARD 5, HUANGHE STREET
CHANGPING DISTRICT
BEIJING, CHINA 102206
CHINA NATIONAL PETROLEUM CORPORATION
NO. 9 DONGZHIMEN NORTH STREET
BEIJING, CHINA
Correspondent:
YIZHOU LIU
CALFEE, HALTER & GRISWOLD LLP
1405 EAST SIXTH STREET
CLEVELAND, OH 44114-1607
Assignment: 4
Reel/Frame:
053582/0348Recorded: 08/24/2020Pages: 8
Conveyance:
CORRECTIVE ASSIGNMENT TO CORRECT THE CORRECTING THE ORDER OF THE CONVEYANCE PARTY DATA PREVIOUSLY RECORDED AT REEL: 053458 FRAME: 0387. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT.
Assignors:
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
Exec Dt:
07/17/2020
CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED
Exec Dt:
07/17/2020
Assignees:
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
NO.66, WEST CHANGJIANG ROAD
HUANGDAO DISTRICT, QINGDAO
SHANDONG, CHINA
CHINA NATIONAL PETROLEUM CORPORATION
NO. 9 DONGZHIMEN NORTH STREET
BEIJING, CHINA
CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED
BUILDING 1, YARD 5, HUANGHE STREET
CHANGPING DISTRICT
BEIJING, CHINA 102206
Correspondent:
YIZHOU LIU
1405 EAST SIXTH STREET
CALFEE, HALTER & GRISWOLD LLP
CLEVELAND, OH 44114

Search Results as of: 05/07/2024 04:28 PM
If you have any comments or questions concerning the data displayed, contact PRD / Assignments at 571-272-3350. v.2.6
Web interface last modified: August 25, 2017 v.2.6
| .HOME | INDEX| SEARCH | eBUSINESS | CONTACT US | PRIVACY STATEMENT