Inventor
Ruijin Jiang
Inventor
Wuhan, CN
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B61Dprimary
B61DBody details or kinds of railway vehicles33%
B61FRail vehicle suspensions, e.g. underframes, bogies or arrangements of wheel axles33%
F16DCouplings for transmitting rotation17%
F16FSprings17%
PatentTitleYear
10,640,133Connecting rod type two-level locking device, hopper car bottom door and hopper car202010,161,468Two-stage stiffness type elastomer combined device20189,919,718'Variable stiffness positioning device for railway vehicle bogie axle box'20189,789,883'Two-level locking device, hopper car bottom door and hopper car'2017Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2017Patents assigned to CRRC YANGTZE CORP LTD (1)· patent assignee history
2017–2020Based in Wuhan, CN· patent location history
2018–2020Patents assigned to CRRC YANGTZE CORPORATION LTD (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CRRC YANGTZE CORPORATION LTD | 3 | 2018–2020 |
| CRRC YANGTZE CORP LTD | 1 | 2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Wuhan, CN | 4 | 2017–2020 |