E21F 1/00

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Showing 1 to 20 of 36 results

Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9903203 Ventilated mine roof supportFeb 17, 17Feb 27, 18BURRELL MINING PRODUCTS, INC.
9759065 Mine ventilation system and methodMay 07, 14Sep 12, 17GMS MINE REPAIR AND MAINTENANCE, INC.
9752436 Method and system for tunnel ventilation in normal conditions and in conditions of fireJan 25, 13Sep 05, 17PAVETIC, JOSIP, PAVETIC, SVIBOR,
9611738 Ventilated mine roof supportAug 27, 14Apr 04, 17BURRELL MINING PRODUCTS, INC.
9605806 Liquefied breathing gas systems for underground minesJul 19, 12Mar 28, 17ELWHA LLC
9551218 Optimized mine ventilation systemSep 01, 08Jan 24, 17HOWDEN ALPHAIR VENTILATING SYSTEMS INC.
9546549 Ventilation system for tunnel section or covered roadDec 08, 06Jan 17, 17Not available
9534496 System and method for tunnel air ventilationAug 13, 15Jan 03, 17Not available
9421983 Active pressurization system making use of platform track area upper slab of underground train stationJun 01, 12Aug 23, 16KOREA RAILROAD RESEARCH INSTITUTE, BNTTEK INC CO., LTD.,
9382798 Method and system for fluid flow control in a fluid network systemDec 04, 13Jul 05, 16ABB RESEARCH LTD.
9291055 Structure for reducing tunnel micro pressure wave including air pipeOct 17, 14Mar 22, 16KOREA RAILROAD RESEARCH INSTITUTE
9004994 Air baffles in railroad tunnels for decreased airflow therein and improved ventilation and cooling of locomotivesJan 09, 12Apr 14, 15UNION PACIFIC RAILROAD COMPANY
8845404 Ventilation tile with collapsible damperFeb 14, 06Sep 30, 14HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
7832338 Exhaust intake bonnet for capturing exhausts from diesel-powered locomotivesMar 08, 06Nov 16, 10ADVANCED ENVIRONMENTAL GROUP, LLC
7685943 Traveling duct for carrying exhaust captured from moving diesel-powered locomotivesApr 18, 06Mar 30, 10ADVANCED ENVIRONMENTAL GROUP, LLC
7511625 Mine safety systemJun 14, 06Mar 31, 09A2MK, LLC, IO LIMITED PARTNERSHIP LLLP, JERUNAZARGABR, LLC, PATENTS INNOVATIONS, LLC,
6776227 Wellhead heating apparatus and methodNov 29, 02Aug 17, 04Not available
6724917 Control apparatus for ventilating a tunnelSep 12, 00Apr 20, 04KABUSHIKI KAISHA TOSHIBA
6669552 Telescopic ventlineOct 10, 02Dec 30, 03Not available
6478672 Method and device for extracting fumes and heat and for providing operational for traffic structures and enclosed traffic spacesJun 26, 01Nov 12, 02Deus Energie-und Umweltsysteme GmbH

Showing 1 to 20 of 36 results