Inventor
Qingyong DU
Inventor
CN
Overview
Patents· 1 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B66Bprimary
B66BElevators50%
E21DShafts50%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2021Patents assigned to HEFEI DESIGN & RES INST OF COAL INDUSTRY CO LTD (1)· patent assignee history
2021Patents assigned to HEFEI DESIGN AND RES INSTITUTE OF COAL INDUSTRY CO LTD (1)· patent assignee history
2021Patents assigned to UNIV HEFEI (1)· patent assignee history
2021Patents assigned to XUZHOU COAL MINE SAFETY EQUIPMENT MFT CO LTD (1)· patent assignee history
2021Based in CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HEFEI DESIGN & RES INST OF COAL INDUSTRY CO LTD | 1 | 2021 |
| HEFEI DESIGN AND RES INSTITUTE OF COAL INDUSTRY CO LTD | 1 | 2021 |
| UNIV HEFEI | 1 | 2021 |
| XUZHOU COAL MINE SAFETY EQUIPMENT MFT CO LTD | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| CN | 1 | 2021 |