| Patents for E21F 5 - Means or methods for preventing, binding, depositing or removing dust; Preventing explosions or fires (2,735) |
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| 02/03/1981 | US4248611 Mining machine |
| 01/20/1981 | US4245726 Supply systems for mobile appliances, particularly mining machines |
| 01/13/1981 | US4244714 Sump divider for demister unit |
| 12/02/1980 | US4237182 Method of sealing interior mine surface with a fire retardant hydrophilic polyurethane foam and resulting product |
| 07/22/1980 | US4213501 Process and device for evaporating large quantities of low boiling liquefied gases |
| 03/11/1980 | US4193105 Pipe with an external sealing body |
| 02/26/1980 | US4190292 Process for suppressing dust in mines |
| 02/19/1980 | US4189257 Sheltering apparatus for use in long wall mining |
| 11/27/1979 | US4175933 Dust filter apparatus |
| 11/06/1979 | US4173140 Trigger device for explosion barrier |
| 11/01/1979 | WO1979000889A1 Air cleaners |
| 10/23/1979 | US4171963 Filter element support member |
| 07/11/1979 | EP0003011A2 Process for the preparation of an injection dispersion |
| 06/26/1979 | CA1057092A1 Tubular one-way closure for injecting a material into a hole |
| 05/01/1979 | US4152126 Equipment for removing dust particles from an air stream |
| 03/27/1979 | US4146094 Tubular one-way closure for injecting a material into a hole |
| 03/20/1979 | US4145197 Mine ventilation |
| 11/14/1978 | CA1042281A1 Method and apparatus for dust control treatment |
| 11/07/1978 | CA1042088A1 Fire detectors |
| 09/12/1978 | US4113019 Inert gas generator based on air jet engine |
| 07/11/1978 | US4099572 Vapor-gas mixture generating installation for extinguishing underground fires |
| 05/02/1978 | US4087572 Method of preventing environmental erosion |
| 04/18/1978 | US4084855 Water-driven air pumping and dust-suppressing apparatus |
| 01/17/1978 | US4068802 Spraying system to control air-borne coal dust |
| 01/10/1978 | US4067818 Dust laying |
| 01/03/1978 | US4065927 Method for blocking gas flow in a coal seam |
| 07/26/1977 | US4038443 Sodium chloride, clay, complex iron cyanide |
| 03/01/1977 | US4009578 Method for preventing fluid migration in coal seams |
| 02/22/1977 | US4008576 Method of securing objects in passages and arrangement obtained thereby, particularly hose lines sealingly secured in the passages of coal mines for dust suppression |
| 11/09/1976 | US3990517 Prevention of self-ignition (spontaneous ignition) of coal through the use of calcium or magnesium chloride with addition of a wetting agent |
| 06/08/1976 | US3961752 Method and apparatus for dust control treatment |
| 06/01/1976 | US3960217 Passive explosion barrier |
| 05/25/1976 | US3958644 Pressure sensitive explosion barrier |
| 05/18/1976 | US3956900 Method for consolidating coal and/or rock in mining |
| 05/04/1976 | US3954662 Addition copolymer, detergent wetting agent |