E21F 1/00

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Description

Class  E21F : SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS


Subclass 1/00: Ventilation of mines or tunnels; Distribution of ventilating currents (ventilating rooms or spaces in general F24F)

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
10598182 Ventilation apparatus with counter-rotating impellers driven by long shaftNov 19, 15Mar 24, 20Taiyuan University of Technology
10563507 Roadway conduit systems and methodsAug 09, 19Feb 18, 20Electricwaze LLC
10539018 Optimized mine ventilation systemDec 12, 16Jan 21, 20HOWDEN ALPHAIR VENTILATING SYSTEMS INC.
10494924 Longwall mine construction method N00Jun 24, 16Dec 03, 19Not available
10458236 Roadway conduit systems and methodsJul 24, 18Oct 29, 19Electricwaze LLC
10145241 Roadway conduit systems and methodsMay 03, 18Dec 04, 18Electricwaze LLC
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

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2020/0049,007 Optimized Mine Ventilation SystemOct 22, 19Feb 13, 20Not available
2019/0249,552 ROADWAY CONDUIT SYSTEMS AND METHODSDec 03, 18Aug 15, 19Not available
2017/0362,937 UNDERGROUND VENTILATION APPARATUS AND METHODJan 22, 16Dec 21, 17POLYVENT PTY LTD
2017/0341,094 TUNNEL FAN AND METHODMay 26, 17Nov 30, 17TWIN CITY FAN COMPANIES, LTD.
2017/0321,553 RAILROAD PLATFORM DOOR ARRANGEMENTApr 25, 17Nov 09, 17Not available
2017/0183,967 MODULAR CONTROLLING SYSTEM FOR VENTILATION EQUIPMENT AND METHODS OF USING THE SAMEMay 11, 15Jun 29, 17Not available
2017/0159,435 System for Filtering the Fresh Air Flowing in a Tunnel and/or the Exhaust Gases Flowing out TherefromJun 25, 15Jun 08, 17Not available
2016/0305,244 SYSTEM AND METHOD FOR EXTRACTION OF SMOKE FROM ROAD TUNNELSDec 05, 14Oct 20, 16Tunnel Air Systems AS
2014/0329,453 BLOWING CURTAIN FACE VENTILATION SYSTEM FOR EXTENDED CUT MINING USING PASSIVE REGULATORMay 01, 14Nov 06, 14UNIVERSITY OF KENTUCKY RESEARCH FOUNDATION

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Patents Issued To Date - By Filing Year

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