Patents by Inventor Frederick P. Punkert

Frederick P. Punkert 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).

  • Asphalt paving mix and method for making it
    Patent number: 5226960
    Abstract: An asphalt paving mix preferably comprising a mixture of asphalt oil preferably in the range of between about 18 and 22 percent by weight; mineral wool fiber preferably in the range of 17 and 23 percent by weight and having a length of between about 0.5 and 5.0 inches and a shot content of between about 25 and 35 percent by weight and aggregate material preferably in the range of between about 55 and 65 percent by weight and having a particle size not less than 0.060 inch and methods for making the asphalt paving mix.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: July 13, 1993
    Assignee: Inphalt, Inc.
    Inventor: Frederick P. Punkert