HEINTZMANN CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21F SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS 58
 
  
 
E21D SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS 412
 
  
 
E02D FOUNDATIONS; EXCAVATIONS; EMBANKMENTS 122

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0198,581 HIGHWALL MINING EQUIPMENT RETRIEVAL AND EXTRACTION APPARATUSJan 06, 17Jul 13, 17[E21F]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9617705 Retainment wall for underground mine and method of constructionMay 13, 15Apr 11, 17[E21D, E21F, E02D]
9022689 Pumpable mine ventilation structureFeb 07, 14May 05, 15[E21F]
8801510 Inflatable ventilation life curtainMar 15, 07Aug 12, 14[E21F]
8371658 Apparatus and method for supporting a mine ribMay 10, 10Feb 12, 13[E21D]
8246276 Pumpable crib bag assembly and method of installationFeb 28, 11Aug 21, 12[E21D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0011,147 INFLATABLE VENTILATION LIFE CURTAINAbandonedJun 30, 14Jan 08, 15[E21F]
2013/0263,673 METHOD OF QUALITY CONTROL FOR DETERMINING THE COMPRESSIVE STRENGTHS OF GROUT IN MULTIPLE MOLDSAbandonedDec 11, 12Oct 10, 13[G01N]
2013/0051,931 IMPACT RESISTANT CAMBERED LAGGING ELEMENTAbandonedDec 02, 11Feb 28, 13[E21D]
2012/0282,041 Yieldable cambered arch support assemblyAbandonedOct 12, 11Nov 08, 12[E21D]
2012/0018,107 PORTABLE VENTILATION CURTAIN FRAMEAbandonedJul 20, 11Jan 26, 12[B23P, A47H]
2012/0009,019 Spillway liner and methodAbandonedApr 16, 11Jan 12, 12[E02B]
2011/0174,194 PUMPABLE CEMENTITIOUS GROUT SYSTEM FOR USE IN THE PRODUCTION OF UNDERGROUND ROOF-SUPPORT SYSTEMS AND OTHER LOAD-BEARING STRUCTURESAbandonedMar 06, 08Jul 21, 11[C04B]
2010/0189,507 Method and product for absorbing and consolidating nuisance water or slurry accumulationsAbandonedJan 28, 10Jul 29, 10[C09K, E02B]

Top Inventors for This Owner

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