Patents by Inventor Duane A. Coon

Duane A. Coon 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).

  • Patent number: 7543349
    Abstract: An invention that uses a convex shaped tool in the application and smoothing of concrete, but also can be used in other fields where needed where there is a concave surface. This trowel will be a big help in many variety of fields that has to deal with different degrees of concave surfaces. This trowel has a need to come in many different sizes, convex shapes, and composition depending on the need in the desired job being worked on. This trowel will be a big help in areas of concave surfaces where before there was no universal tool to do those jobs quickly and efficiently.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: June 9, 2009
    Inventor: Duane A. Coon
  • Publication number: 20050188492
    Abstract: An invention that uses a convex shaped tool in the application and smoothing of concrete, but also can be used in other fields where needed where there is a concave surface. This trowel will be a big help in many variety of fields that has to deal with different degrees of concave surfaces. This trowel has a need to come in many different sizes, convex shapes, and composition depending on the need in the desired job being worked on. This trowel will be a big help in areas of concave surfaces where before there was no universal tool to do those jobs quickly and efficiently.
    Type: Application
    Filed: February 27, 2004
    Publication date: September 1, 2005
    Inventor: Duane Coon