TREA

Harold W. Johnson, Jr.

Follow

Person

  • Midlothian, VA, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Filtration system underdrain
    • Patent number 7,090,771
    • Issue date Aug 15, 2006
    • Infilco Degremont, Inc.
    • John D. Dyson
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Automatic backwash filter system
    • Patent number 6,921,481
    • Issue date Jul 26, 2005
    • Ondeo Degremont, Inc.
    • Jack H. Jessop
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL