Inventor
Zhiyong Zhou
Inventor
Beijing, CN
Overview
Patents· 1 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling50%
F16LPipes50%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2017Patents assigned to BEIJING PETROLEUM MACHINERY FACTORY (1)· patent assignee history
2017Patents assigned to CHINA NAT PETROLEUM CORP (1)· patent assignee history
2017Patents assigned to CNPC DRILLING RES INST (1)· patent assignee history
2017Based in Beijing, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BEIJING PETROLEUM MACHINERY FACTORY | 1 | 2017 |
| CHINA NAT PETROLEUM CORP | 1 | 2017 |
| CNPC DRILLING RES INST | 1 | 2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Beijing, CN | 1 | 2017 |