TREA

for coal, brown coal, or the like

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Industry

  • CPC
  • E21C47/02
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C47/00Machines for obtaining or the removal of materials in open-pit mines

Current Industry

E21C47/02for coal, brown coal, or the like
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Method for radially mining open-pit end slope pressed coal
    • Patent number 11,377,952
    • Issue date Jul 5, 2022
    • China University of Mining and Technology
    • Nan Zhou
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method of moving material
    • Patent number 10,689,981
    • Issue date Jun 23, 2020
    • OPTI-MINEZ PTY LTD
    • David John Hall
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Mining machine, in particular surface miner, as well as method for...
    • Patent number 8,388,070
    • Issue date Mar 5, 2013
    • Wirtgen GmbH
    • Winfried von Schönebeck
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Dragline bucket rigging and control apparatus
    • Patent number 7,152,349
    • Issue date Dec 26, 2006
    • CMTE Development Limited
    • Jeffrey C. Rowlands
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Method of operating a bucket wheel excavator
    • Patent number 5,857,274
    • Issue date Jan 12, 1999
    • Krupp Fordertechnik GmbH
    • Hans Jurgen Rudiger
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Open cut mining apparatus
    • Patent number 5,409,298
    • Issue date Apr 25, 1995
    • BHP Australia Coal Limited
    • Alan W. Dickerson
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Overburden excavator
    • Patent number 4,848,844
    • Issue date Jul 18, 1989
    • Mannesmann Aktiengesellschaft
    • Aby Weiss
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Heavy breaking giant excavating equipment
    • Patent number 4,486,049
    • Issue date Dec 4, 1984
    • O & K Orenstein & Koppel Aktiengesellschaft
    • Wolfgang Lubrich
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Modified strip mining apparatus
    • Patent number 4,480,872
    • Issue date Nov 6, 1984
    • Walter H. Hawkins
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3301602
    • Patent number 3,301,602
    • Issue date Jan 31, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3301599
    • Patent number 3,301,599
    • Issue date Jan 31, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2895188
    • Patent number 2,895,188
    • Issue date Jul 21, 1959
    • B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents