TREA

Darryl M. Nagel

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  • Eden Prairie, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Viewport for high temperature combustion zones
    • Patent number 11,892,164
    • Issue date Feb 6, 2024
    • HRST, Inc.
    • Lester Stanley
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    Viewport for high temperature combustion zones
    • Patent number 11,603,992
    • Issue date Mar 14, 2023
    • HRST, Inc.
    • Lester Stanley
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Liner fabrication tool
    • Patent number 10,281,172
    • Issue date May 7, 2019
    • HRST, Inc.
    • Robert James Krowech
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Expansion seal
    • Patent number 7,237,806
    • Issue date Jul 3, 2007
    • Robert J. Krowech
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    VIEWPORT FOR HIGH TEMPERATURE COMBUSTION ZONES
    • Publication number 20230213189
    • Publication date Jul 6, 2023
    • HRST, INC.
    • Lester Stanley
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Application

    VIEWPORT FOR HIGH TEMPERATURE COMBUSTION ZONES
    • Publication number 20210285638
    • Publication date Sep 16, 2021
    • HRST, INC.
    • Lester Stanley
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Application

    Liner Fabrication Tool
    • Publication number 20170087672
    • Publication date Mar 30, 2017
    • HRST, INC.
    • Robert James Krowech
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Expansion seal
    • Publication number 20070126229
    • Publication date Jun 7, 2007
    • Robert J. Krowech
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...