TREA

Mineral freed by means not involving slitting

Follow

Industry

  • CPC
  • E21C27/20
This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C27/00Machines which completely free the mineral from the seam

Current Industry

E21C27/20Mineral freed by means not involving slitting
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Cutting device with tapered cutting element
    • Patent number 11,499,426
    • Issue date Nov 15, 2022
    • Joy Global Underground Mining LLC
    • Joaquim Antonio Soares de Sousa
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Vehicle body utilized in rockbreaker, rockbreaker and rock breaking...
    • Patent number 11,047,234
    • Issue date Jun 29, 2021
    • CHENGDU LIESHIZHE ROCK-BREAKING TECHNOLOGY LLC
    • Xijia Ling
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Cutting head having segmented cutting disc
    • Patent number 10,989,050
    • Issue date Apr 27, 2021
    • Joy Global Underground Mining LLC
    • Joaquim Antonio Soares de Sousa
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Cutting device with tapered cutting element
    • Patent number 10,808,531
    • Issue date Oct 20, 2020
    • Joy Global Underground Mining LLC
    • Joaquim Antonio Soares de Sousa
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Coal caving cycle
    • Patent number 9,068,452
    • Issue date Jun 30, 2015
    • Yancoal Technology Development PTY Ltd
    • Maohu Matthew Wang
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Continuous mining machine
    • Patent number 5,087,102
    • Issue date Feb 11, 1992
    • Heinz E. Kiefer
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Universal ripper miner
    • Patent number 5,013,093
    • Issue date May 7, 1991
    • The United States of America as represented by the Secretary of the Interior
    • Roger J. Morrell
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mining machine with adjustable hood-scoop assembly
    • Patent number 4,550,952
    • Issue date Nov 5, 1985
    • Harvey Hall
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Machine operators compartment
    • Patent number 4,546,849
    • Issue date Oct 15, 1985
    • National Mine Service Company
    • Barry R. Kelley
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Corner-cutting mining assembly
    • Patent number 4,400,036
    • Issue date Aug 23, 1983
    • John A. Bradley
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Auger mining machine
    • Patent number 4,264,106
    • Issue date Apr 28, 1981
    • The Salem Tool Company
    • Ronald C. Deeter
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Continuous miner with improved roof-to-floor anchoring canopy units...
    • Patent number 4,226,476
    • Issue date Oct 7, 1980
    • Fairchild Incorporated
    • Jack R. Fairchild
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mining machines with cutter chain tensioning means
    • Patent number 4,190,295
    • Issue date Feb 26, 1980
    • Coal Industry (Patents) Limited
    • Gordon E. Boast
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Apparatus for coal mining in-cutting and out-cutting
    • Patent number 4,082,362
    • Issue date Apr 4, 1978
    • Coaltex, Inc.
    • James Conley Justice
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method of recovering useful minerals from subterranean deposits the...
    • Patent number 4,007,965
    • Issue date Feb 15, 1977
    • Anthony J. Shuttle
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method and apparatus for in-cutting and out-cutting during coal mining
    • Patent number 4,003,602
    • Issue date Jan 18, 1977
    • Coaltex, Incorporated
    • James Conley Justice
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Apparatus for continuous mining
    • Patent number 3,997,216
    • Issue date Dec 14, 1976
    • John D. Russell
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hydraulic-mechanical coal mining combine
    • Patent number 3,995,908
    • Issue date Dec 7, 1976
    • Gennady Innokentievich Razgildeev
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3892443
    • Patent number 3,892,443
    • Issue date Jul 1, 1975
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3801157
    • Patent number 3,801,157
    • Issue date Apr 2, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3726562
    • Patent number 3,726,562
    • Issue date Apr 10, 1973
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3700285
    • Patent number 3,700,285
    • Issue date Oct 24, 1972
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3697136
    • Patent number 3,697,136
    • Issue date Oct 10, 1972
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3695725
    • Patent number 3,695,725
    • Issue date Oct 3, 1972
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3617093
    • Patent number 3,617,093
    • Issue date Nov 2, 1971
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3586113
    • Patent number 3,586,113
    • Issue date Jun 22, 1971
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    3479090
    • Patent number 3,479,090
    • Issue date Nov 18, 1969
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3420577
    • Patent number 3,420,577
    • Issue date Jan 7, 1969
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3328087
    • Patent number 3,328,087
    • Issue date Jun 27, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3290095
    • Patent number 3,290,095
    • Issue date Dec 6, 1966
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents