E21F

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Description

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

Subclasses

Not Available
Subclass Title
1/00 Ventilation of mines or tunnels; Distribution of ventilating currents (ventilating rooms or spaces in general F24F)
1/02 Ventilation of mines or tunnels; Distribution of ventilating currents (ventilating rooms or spaces in general F24F) Test models (analogue computers therefor G06G 7/5)
1/04 Ventilation of mines or tunnels; Distribution of ventilating currents (ventilating rooms or spaces in general F24F) Air ducts (suspension devices E21F 17/02)
1/06 Ventilation of mines or tunnels; Distribution of ventilating currents (ventilating rooms or spaces in general F24F) Air ducts (suspension devices E21F 17/02) Duct connections (tube connections in general F16L)
1/08 Ventilation of mines or tunnels; Distribution of ventilating currents (ventilating rooms or spaces in general F24F) Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators (ventilators per seF04D)

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Recent Patents

Not Available

Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2020/0053,627 SYSTEM FOR TRANSMITTING DATA FROM AN UNDERGROUND VEHICLE Oct 22, 19 Feb 13, 20 , Not available
2020/0049,007 Optimized Mine Ventilation System Oct 22, 19 Feb 13, 20 , Not available
2020/0049,533 System and Method for Monitoring Fault Conditions in a Pan Line of a Longwall Mining System Jul 24, 19 Feb 13, 20 , CATERPILLAR GLOBAL MINING EUROPE GMBH
2020/0049,008 Plug for a Void, System and Method Oct 16, 19 Feb 13, 20 , Strata Products Worldwide, LLC
2020/0040,727 METHOD FOR MINING ULTRA-THICK COAL SEAM BY UTILIZING GOAF SOLID BACKFILLING TECHNIQUE Jan 23, 19 Feb 06, 20 , Not available
2020/0040,726 COMBINED AUTOMATIC ANTI-EXPLOSION METHOD FOR GAS DRAINAGE PIPELINE Aug 03, 18 Feb 06, 20 , Not available
2020/0040,728 METHOD OF FORMING A ROADWAY BY FILLING GANGUE PASTE DURING WIDE-ROADWAY EXCAVATION OF THICK COAL SEAM May 11, 18 Feb 06, 20 , Not available
2020/0040,729 Inclined Shaft Continuous Feeding System for Solid Filling Materials Jan 23, 19 Feb 06, 20 , Not available
2020/0032,651 VEHICULAR WORK MACHINE AND METHOD FOR VEHICULAR WORK MACHINE WATER CONTROL Jan 03, 18 Jan 30, 20 , Not available
2020/0032,647 METHOD FOR ROCK BURST PREVENTION BY ACTIVE SUPPORT REINFORCEMENT AND ACTIVE PRESSURE RELIEF Aug 03, 18 Jan 30, 20 , Not available
2020/0033,496 MONITORING AND FOREWARNING METHOD FOR COAL-ROCK DYNAMIC DISASTERS BASED ON ELECTROMAGNETIC RADIATION AND EARTH SOUND Mar 30, 18 Jan 30, 20 , University of Science and Technology Beijing; Zhong-an Academy of safety Engineering;
2020/0024,944 METHOD OF MINING SINGLE STEEPLY-INCLINED THICK COAL SEAM May 11, 18 Jan 23, 20 , Not available

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Patents Issued To Date - By Filing Year

Average Time to Issuance

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