Inventor
Xingwen WANG
Inventor
CN
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B61Fprimary
B61FRail vehicle suspensions, e.g. underframes, bogies or arrangements of wheel axles17%
B61GCouplings17%
B61LGuiding railway traffic17%
E21BEarth or rock drilling17%
G06FElectric digital data processing17%
H01HElectric switches17%
PatentTitleYear
12,486,753Wellbore staged operation method and rubber plug for said method202512,314,531Application classification method, electronic device, and chip system202512,202,530Intermediate car electric coupler control circuit for subway vehicle202511,964,679Underframe end structure without bolster beam for rail vehicle2024Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2024–2025Patents assigned to CRRC NANJING PUZHEN CO LTD (2)· patent assignee history
2024–2025Based in CN· patent location history
2025Patents assigned to CHINA PETROLEUM & CHEM CORP (1)· patent assignee history
2025Patents assigned to PETAL CLOUD TECHNOLOGY CO LTD (1)· patent assignee history
2025Patents assigned to SINOPEC SOUTHWEST OIL & GAS CO (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CRRC NANJING PUZHEN CO LTD | 2 | 2024–2025 |
| CHINA PETROLEUM & CHEM CORP | 1 | 2025 |
| PETAL CLOUD TECHNOLOGY CO LTD | 1 | 2025 |
| SINOPEC SOUTHWEST OIL & GAS CO | 1 | 2025 |
Locations
| Location | Patents | Span |
|---|---|---|
| CN | 4 | 2024–2025 |