TREA

Christopher G. Stewart

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  • Oil City, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Bearing assembly for a wheel unit
    • Patent number 12,065,009
    • Issue date Aug 20, 2024
    • Joy Global Underground Mining LLC
    • Alex Connell
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Chain conveyor and link for same
    • Patent number 11,858,745
    • Issue date Jan 2, 2024
    • Joy Global Underground Mining LLC
    • Joseph Daniel Hoover
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Chain conveyor and link for same
    • Patent number 11,530,095
    • Issue date Dec 20, 2022
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Chain conveyor
    • Patent number 11,440,736
    • Issue date Sep 13, 2022
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Chain conveyor and link for same
    • Patent number 11,332,316
    • Issue date May 17, 2022
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Chain conveyor
    • Patent number 10,981,728
    • Issue date Apr 20, 2021
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Chain conveyor and coupler link for same
    • Patent number 10,974,905
    • Issue date Apr 13, 2021
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    System and method for determining efficiency of an industrial machine
    • Patent number 10,773,352
    • Issue date Sep 15, 2020
    • Joy Global Underground Mining LLC
    • Christopher Stewart
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Chain conveyor and link for same
    • Patent number 10,717,603
    • Issue date Jul 21, 2020
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Drive shaft and sprockets for chain conveyor
    • Patent number 10,604,347
    • Issue date Mar 31, 2020
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Chain conveyor and coupler link for same
    • Patent number 10,442,627
    • Issue date Oct 15, 2019
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Chain conveyor
    • Patent number 10,414,594
    • Issue date Sep 17, 2019
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Chain conveyor link
    • Patent number 10,392,193
    • Issue date Aug 27, 2019
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Chain conveyor with cast sections
    • Patent number 10,106,325
    • Issue date Oct 23, 2018
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Cutting drum web deflector
    • Patent number 6,890,037
    • Issue date May 10, 2005
    • Joy M M Delaware, Inc
    • Christopher G Stewart
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Tracked vehicle and tension adjustment assembly
    • Patent number 6,565,162
    • Issue date May 20, 2003
    • Joy MM Delaware, Inc.
    • Christopher G. Stewart
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Slidably displaceable duct assembly for a mining machine
    • Patent number 6,007,157
    • Issue date Dec 28, 1999
    • Joy MM Delaware, Inc.
    • Christopher G. Stewart
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Displaceable filtering apparatus for airborne contaminates
    • Patent number 5,597,393
    • Issue date Jan 28, 1997
    • Joy MM Delaware Inc.
    • Randall F. Johnson
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    BEARING ASSEMBLY FOR A WHEEL UNIT
    • Publication number 20230061119
    • Publication date Mar 2, 2023
    • Joy Global Underground Mining LLC
    • Alex Connell
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    CHAIN CONVEYOR AND LINK FOR SAME
    • Publication number 20220234835
    • Publication date Jul 28, 2022
    • Joy Global Underground Mining LLC
    • Joseph Daniel Hoover
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    CHAIN CONVEYOR
    • Publication number 20210237979
    • Publication date Aug 5, 2021
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    CHAIN CONVEYOR AND LINK FOR SAME
    • Publication number 20200354150
    • Publication date Nov 12, 2020
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    CHAIN CONVEYOR AND COUPLER LINK FOR SAME
    • Publication number 20200115164
    • Publication date Apr 16, 2020
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    SLEEVE RETENTION FOR CUTTING PICK ASSEMBLY
    • Publication number 20200080420
    • Publication date Mar 12, 2020
    • Joy Global Underground Mining LLC
    • Christopher G. Stewart
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    CHAIN CONVEYOR
    • Publication number 20200010277
    • Publication date Jan 9, 2020
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    SYSTEM AND METHOD FOR DETERMINING EFFICIENCY OF AN INDUSTRIAL MACHINE
    • Publication number 20180345436
    • Publication date Dec 6, 2018
    • Joy Global Underground Mining LLC
    • Christopher Stewart
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    CHAIN CONVEYOR WITH CAST SECTIONS
    • Publication number 20180251308
    • Publication date Sep 6, 2018
    • Joy MM Delaware, Inc.
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    CHAIN CONVEYOR AND COUPLER LINK FOR SAME
    • Publication number 20180251310
    • Publication date Sep 6, 2018
    • Joy MM Delaware, Inc.
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    CHAIN CONVEYOR AND LINK FOR SAME
    • Publication number 20180251311
    • Publication date Sep 6, 2018
    • Joy MM Delaware, Inc.
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    CHAIN CONVEYOR LINK
    • Publication number 20180251313
    • Publication date Sep 6, 2018
    • Joy MM Delaware, Inc.
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    DRIVE SHAFT AND SPROCKETS FOR CHAIN CONVEYOR
    • Publication number 20180251316
    • Publication date Sep 6, 2018
    • Joy MM Delaware, Inc.
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    CHAIN CONVEYOR
    • Publication number 20180251312
    • Publication date Sep 6, 2018
    • Joy MM Delaware, Inc.
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    Cutting drum web deflector
    • Publication number 20040164603
    • Publication date Aug 26, 2004
    • Joy MM Delaware, Inc.
    • Christopher G. Stewart
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Tracked vehicle and tension adjustment assembly
    • Publication number 20020038978
    • Publication date Apr 4, 2002
    • Joy MM Delware, Inc.
    • Christopher G. Stewart
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS