Class E21F : SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS
Subclass 5/00: Means or methods for preventing, binding, depositing or removing dust; Preventing explosions or fires (dams E21F 17/103; applying liquids or other fluent materials to surfaces in general B05; flue-gas indicators G01N)
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11674392 | Split air cabin ventilation system for construction of tunnel inclined shaft and ventilation method using same | Mar 25, 21 | Jun 13, 23 | CHINA RAILWAY BEIJING ENGINEERING GROUP CO., LTD; The No. 1 Engineering Co., Ltd of China Railway Beijing Engineering Group; CHANG'AN UNIVERSITY; |
| 11103820 | Dry filter with enhanced separation output and convenient dimensions | Jan 03, 19 | Aug 31, 21 | CFT GmbH Compact Filter Technic |
| 11028693 | Absorption-induction convectional dust-controlling/removing air/fog curtain device of fully-mechanized working face and method thereof | Jun 26, 19 | Jun 08, 21 | Shandong University of Science and Technology |
| 10767090 | Method and composition for dust control | Feb 27, 17 | Sep 08, 20 | ECOLAB USA INC. |
| 10723925 | Composition comprising saturated hydrocarbon and method for dust suppression | Aug 08, 18 | Jul 28, 20 | American Refining Group, Inc. |
| 10066139 | Composition comprising saturated hydrocarbon and method for dust suppression | Sep 02, 14 | Sep 04, 18 | American Refining Group, Inc. |
| 9869178 | Method for efficiently treating spontaneous ignition of remaining coal in large area goaf of shallow-buried coal bed | Aug 11, 15 | Jan 16, 18 | CHINA UNIVERSITY OF MINING AND TECHNOLOGY |
| 9815071 | Housing for a nozzle | Apr 20, 16 | Nov 14, 17 | DUST SOLUTIONS, INC. |
| 9724548 | Terminating expansion of underground coal fires and protecting the environment | Jul 22, 15 | Aug 08, 17 | ENGINEERING PROJECTS MANAGEMENT INTERNATIONAL, LECHTMAN, DAVID, |
| 9623454 | Method and composition for dust control | Feb 15, 14 | Apr 18, 17 | ECOLAB USA INC. |
| 9452303 | Valve device and method for preventing explosion propagation | Aug 26, 13 | Sep 27, 16 | Sturvek International NV, Stuvex International N.V., |
| 9086180 | Quick connect fire and dust suppression system | Jul 11, 12 | Jul 21, 15 | Porta, Frank T. |
| 8096622 | Method of controlling mine fires with polymeric gel | Sep 24, 08 | Jan 17, 12 | Micon |
| 5997100 | Inertization system for highwall mining | Oct 09, 98 | Dec 07, 99 | BROKEN HILL PROPRIETARY COMPANY LIMITED, THE |
| 5167474 | Form for making a permanent concrete mine stopping | Dec 06, 91 | Dec 01, 92 | JACK KENNEDY METAL PRODUCTS & BUILDINGS, INC., John Kennedy Metal Products & Buildings, |
| Upgrade to the Professional Level to view Top Owners for this Subclass.Learn More |
|---|
