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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21D SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS 313
 
  
 
E21F SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS 310
 
  
 
A62C FIRE-FIGHTING 126

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8851804 Pumpable support with claddingApr 21, 11Oct 07, 14[E21D]
8807661 Method of controlling ventilation in a mine entry with polymeric gelJan 17, 12Aug 19, 14[E21F, A62C]
8801338 Nested mine roof supportsNov 26, 12Aug 12, 14[E21D]
8777522 Mine seal with multiple mortared wallsJan 14, 09Jul 15, 14[E21F]
8342776 Mine seal with adhesiveJun 06, 08Jan 01, 13[E21D]
8096622 Method of controlling mine fires with polymeric gelSep 24, 08Jan 17, 12[E21F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0348,596 NESTED MINE ROOF SUPPORTSAbandonedAug 11, 14Nov 27, 14[E21D]
2011/0139,157 System and Method of Delivering Emergency Breathable Gas Supply to Underground MinesAbandonedDec 13, 10Jun 16, 11[A62B]

Top Inventors for This Owner

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