Field briefing
E21F · Safety devices, transport, filling-up, rescue, ventilation, or draining in or of mines…
Safety devices, transport, filling-up, rescue, ventilation, or draining in or of mines or tunnels. Patents classified in CPC E21F, part of Construction and mining.
Dates, owners, statuses and filings come from the published records. Derived views are counted from them. Highlighted text is a plain-English AI reading, written from a patent's title and abstract. Legal statuses and expiry dates are estimates, not legal advice.
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Connected industries
Other industries that share patents, companies or citations with Safety devices, transport, filling-up, rescue, ventilation, or draining in or of mines….
Newest patents in E21F · Safety devices, transport, filling-up, rescue, ventilation, or draining in or of mines…
2 patents imported from the European Patent Office; newest published 2026-08-28; most active companies: Wang Yong, 康威通信技术股份有限公司.
- 一种快拆地埋装置及联动锁止与快拆方法 CN122659551A, published 2026-08-28
- Mine underground cooling device capable of displaying pressure CN105201541A, published 2015-12-30
Most active companies
Counted over the newest 2 imported patents in this industry.
- Wang Yong 1 patent
- 康威通信技术股份有限公司 1 patent