Patents by Inventor Wilfred J. Day

Wilfred J. Day 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).

  • Cementitious shotcrete composition
    Patent number: 6565647
    Abstract: A cementitious shotcrete composition comprising a blend of the following range of ingredients in the following percentages by weight: cement  50% to 99% zeolite 0.3% to 49.3% barite 0.7% to 49.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: May 20, 2003
    Assignee: Shieldcrete Ltd.
    Inventors: Wilfred J. Day, Richard G. Parker, Frank M. MacNeil