Patents by Inventor Michaye Louise McMaster

Michaye Louise McMaster has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Wastewater treatment method and apparatus
    Patent number: 6153094
    Abstract: The treatment system is for use with septic tank effluent. Water is passed over polyurethane foam blocks, arranged in a heap so that air can circulate freely around the blocks. The size of the foam cells is small enough that water soaks into the blocks and is retained therin. The foam is soft and easily deformed. At the points of block-to-block engagement, the blocks deflect and conform to each other, giving rise to a large contact area through which water can pass between blocks.
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: November 28, 2000
    Assignee: E. Craig Jowett
    Inventors: E. Craig Jowett, Michaye Louise McMaster
  • Wastewater treatment method and apparatus
    Patent number: 5980739
    Abstract: The treatment system is for use with septic tank effluent. Water is passed over polyurethane foam blocks, arranged in a heap so that air can circulate freely around the blocks. The size of the foam cells is small enough that water soaks into the blocks and is retained therin. The foam is soft and easily deformed. At the points of block-to-block engagement, the blocks deflect and conform to each other, giving rise to a large contact area through which water can pass between blocks.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: November 9, 1999
    Assignee: E. Craig Jowett
    Inventors: E Craig Jowett, Michaye Louise McMaster