TREA

David L. McCain

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  • Ponca City, OK, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Selective mining from horizontal holes
    • Patent number 4,496,191
    • Issue date Jan 29, 1985
    • Conoco Inc.
    • Dai-Shik Choi
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Sprocket-type loop carrier
    • Patent number 4,169,631
    • Issue date Oct 2, 1979
    • Continental Oil Company
    • David L. McCain
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Hose and linkage support apparatus for a sump vehicle
    • Patent number 4,089,053
    • Issue date May 9, 1978
    • Continental Oil Company
    • Ronald W. Umphrey
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Scalping apparatus for a low profile two-roll crusher
    • Patent number 3,998,396
    • Issue date Dec 21, 1976
    • Continental Oil Company
    • Ronald W. Umphrey
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Shallow underground coal slurry concentration sump
    • Patent number 3,981,541
    • Issue date Sep 21, 1976
    • Continental Oil Company
    • Richard E. Doerr
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Coal slurry recovery systems
    • Patent number 3,966,261
    • Issue date Jun 29, 1976
    • Continental Oil Company
    • Richard E. Doerr
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Conveyor for flexible slurry hose
    • Patent number 3,955,593
    • Issue date May 11, 1976
    • Continental Oil Company
    • Ronald W. Umphrey
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Slurry handling system
    • Patent number 3,942,841
    • Issue date Mar 9, 1976
    • Continental Oil Company
    • David L. McCain
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Methods and systems for hydraulically transporting solids
    • Patent number 3,940,184
    • Issue date Feb 24, 1976
    • Continental Oil Company
    • David L. McCain
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Apparatus for hydraulically transporting solids
    • Patent number 3,931,999
    • Issue date Jan 13, 1976
    • Continental Oil Company
    • David L. McCain
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL