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Robert Yaw Gyamfi Andoh

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  • South Portland, ME, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Drainage system and apparatus for treating runoff
    • Patent number 9,739,064
    • Issue date Aug 22, 2017
    • Hydro International Ltd
    • Robert Yaw Gyamfi Andoh
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Treatment device
    • Patent number 9,688,544
    • Issue date Jun 27, 2017
    • Hydro International PLC
    • Jeremy Fink
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Method for configuring a vortex flow control device
    • Patent number 9,625,914
    • Issue date Apr 18, 2017
    • Hydro International PLC
    • Daniel Stuart Jarman
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Flow regulating device
    • Patent number 9,051,724
    • Issue date Jun 9, 2015
    • Hydro International PLC
    • Robert Yaw Gyamfi Andoh
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Treatment device
    • Patent number 8,900,448
    • Issue date Dec 2, 2014
    • Hydro International PLC
    • Jeremy Fink
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Stormwater gully
    • Patent number 8,623,204
    • Issue date Jan 7, 2014
    • Hydro International PLC
    • Robert Yaw Gyamfi Andoh
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Vortex flow control device
    • Patent number 8,555,924
    • Issue date Oct 15, 2013
    • Hydro International PLC
    • Michael G. Faram
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Stormwater gully
    • Patent number 8,480,887
    • Issue date Jul 9, 2013
    • Hydro International PLC
    • Robert Yaw Gyamfi Andoh
    • E03 - WATER SUPPLY SEWERAGE

Patents Applicationslast 30 patents