TREA

Joel D. DeHaan

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  • Zeeland, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Air-assist discharge of filter press cake
    • Patent number 5,567,327
    • Issue date Oct 22, 1996
    • JWI, Inc.
    • Joel D. De Haan
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Plate shifter for filter press
    • Patent number 5,505,846
    • Issue date Apr 9, 1996
    • JWI, Inc.
    • Daniel DeHaan
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Plate shifter for filter press
    • Patent number 5,370,795
    • Issue date Dec 6, 1994
    • JWI, Inc.
    • Daniel DeHaan
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Air-assist discharge of filter press cake
    • Patent number 5,328,617
    • Issue date Jul 12, 1994
    • JWI, Inc.
    • Joel D. De Haan
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL