Patents by Inventor Gary Helf

Gary Helf 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 PAVEMENT RECYCLING METHOD AND COMPOSITIONS
    Publication number: 20060215483
    Abstract: A method of heating old asphalt grindings for reuse, which is indirect and uses a screw dryer for the process. Granulated old asphalt is mixed with a composition comprising from about 60% to 96% by weight of asphalt, and from about 4% to 40% by weight of a terpenoid liquid.
    Type: Application
    Filed: March 24, 2006
    Publication date: September 28, 2006
    Inventor: Gary Helf
  • Asphalt compositions
    Patent number: 6248396
    Abstract: In one embodiment, the present invention relates to an asphalt composition containing asphalt, a terpenoid liquid, a rubber at least partially soluble in the asphalt composition and a flexible aggregate.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: June 19, 2001
    Inventor: Gary Helf