Bochumer Eisenhutte Heintzmann GmbH & Co. KG

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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
 
  
 
E04C STRUCTURAL ELEMENTS; BUILDING MATERIALS 125

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9010061 Lattice girderSep 03, 13Apr 21, 15[E21D, E04C]
8979434 Tubbing lining having an integrated flexible elementDec 01, 10Mar 17, 15[E21D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2009/0202,310 SUPPORT FOR UNDERGROUND MINING AND TUNNEL CONSTRUCTIONAbandonedApr 23, 09Aug 13, 09[E21D, B23P]
6921232 Mine roof-support trussExpiredJul 20, 04Jul 26, 05[E21D]
6880308 Lattice girder supporting frame having straight brace partsExpiredApr 25, 01Apr 19, 05[E04C]
2002/0000,075 Lattice girder supporting frame having oblique cut truss bracesAbandonedApr 25, 01Jan 03, 02[E04B, E04C, E04F, E04H]
6267211 Drive unit for machinery, especially mining machineryExpiredMar 23, 99Jul 31, 01[F16D]
5895097 Continuously operating mining machine for simultaneous excavation and conveying of coalExpiredApr 25, 97Apr 20, 99[E21C]
5624162 Long-wall mining machine with a working chainExpiredOct 06, 95Apr 29, 97[E21C]
5564867 Resilienty compressible support column for use in a mineExpiredOct 28, 94Oct 15, 96[E21D]
5484130 Support column for use in a mineExpiredOct 28, 94Jan 16, 96[A47F]
5314161 Mine propExpiredMay 29, 92May 24, 94[E04G]
5219440 System for cutting and conveying coal and the likeExpiredFeb 18, 92Jun 15, 93[E21C]
5149044 Cap shoeExpiredJun 28, 91Sep 22, 92[E21D]
5144275 Positioning cylinder, especially for subterranean miningExpiredJan 30, 91Sep 01, 92[H01C]
5110187 Apparatus for the mining of mineral matter, especially coalExpiredMar 07, 91May 05, 92[E21D]
5090775 Method of monitoring and controlling mining operationsExpiredDec 04, 90Feb 25, 92[E21F, G08B]
5088796 Seam-mining apparatusExpiredFeb 07, 91Feb 18, 92[F21C]
5000622 Shaking control unit for a hydraulic cylinderExpiredNov 21, 89Mar 19, 91[E21D]
4907918 Shaking control unit for a hydraulic cylinderExpiredSep 10, 87Mar 13, 90[E21D]
4905520 Pressure sensorExpiredOct 12, 88Mar 06, 90[G01L]
4900091 Electrohydraulic coal-mining systemExpiredSep 09, 88Feb 13, 90[E21D]

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