ENN COAL GASIFICATION MINING CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF277
 
 
 
C10J PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES 219
 
 
 
E21B EARTH OR ROCK DRILLING 294

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0101,593 COAL CO-GASIFICATION METHODApr 10, 15Apr 13, 17[C01B, C10J]
2017/0081,601 COAL CO-GASIFICATION METHODApr 10, 15Mar 23, 17[C01B, C10J]
2016/0123,128 GAS INJECTION APPARATUS WITH CONTROLLABLE GAS INJECTION POINT, GAS INJECTION PROCESS, AND GASIFICATION METHODMar 27, 14May 05, 16[E21B]

Recent Patents

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2016/0258,265 NOZZLE AND UNDERGROUND COAL GASIFICATION METHODAbandonedApr 03, 14Sep 08, 16[B05B, E21B]
2016/0251,950 UNDERGROUND GASIFICATION IGNITION METHODAbandonedMar 27, 14Sep 01, 16[E21B]
2016/0194,945 UNDERGROUND COAL GASIFICATION FURNACE AND UNDERGROUND COAL GASIFICATION METHODAbandonedApr 03, 14Jul 07, 16[E21B]
2015/0247,385 METHOD FOR JOINT-MINING OF COALBED GAS AND COALAbandonedSep 18, 13Sep 03, 15[E21B]
2015/0247,394 METHOD FOR FRACTURE COMMUNICATION, PASSAGE PROCESSING, AND UNDERGROUND GASIFICATION OF UNDERGROUND CARBON-CONTAINING ORGANIC MINERAL RESERVOIRAbandonedSep 18, 13Sep 03, 15[E21B]

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