Inventor
Feng Ju
Inventor
Jiangsu, CN
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Dprimary
E21DShafts30%
E21FSafety devices, transport, filling-up, rescue, ventilation, or draining in or of mines or tunnels30%
E21CMining or quarrying20%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy10%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution10%
PatentTitleYear
11,085,296Method for controlling subsidence area caused by underground mining in adjoining open-pit mine202110,844,717Mechanical constant-resistance single prop continuous prop lifting pre-tightening device and method202010,826,121Electrolyte and secondary battery202010,036,252Method for removing hydraulic support for solid filling coal mining20189,494,037'Inclined layered solid-filling mining method in ultrathick coal layer'2016Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2016Patents assigned to UNIV CHINA MINING & TECHNOLOGY (1)· patent assignee history
2016–2021Based in Jiangsu, CN· patent location history
2018–2021Patents assigned to UNIV CHINA MINING (3)· patent assignee history
2018Based in Xuzhou, CN· patent location history
2020Patents assigned to CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (1)· patent assignee history
2020Based in Ningde, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| UNIV CHINA MINING | 3 | 2018–2021 |
| CONTEMPORARY AMPEREX TECHNOLOGY CO LTD | 1 | 2020 |
| UNIV CHINA MINING & TECHNOLOGY | 1 | 2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Jiangsu, CN | 3 | 2016–2021 |
| Ningde, CN | 1 | 2020 |
| Xuzhou, CN | 1 | 2018 |