Patents by Inventor Carlos R. Danville

Carlos R. Danville 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: 4460719
    Abstract: Polyester and hardener compositions have incorporated therein pigments of Toluidine Red Y and Parachlor R to enable the user to determine when mixing is uniform and when the cure has been completed.
    Type: Grant
    Filed: January 19, 1983
    Date of Patent: July 17, 1984
    Inventor: Carlos R. Danville
  • Patent number: 4370428
    Abstract: Polyester and hardener compositions have incorporated therein pigments of Toluidine Red Y and Parachlor R to enable the user to determine when mixing is uniform and when the cure has been completed.
    Type: Grant
    Filed: October 17, 1980
    Date of Patent: January 25, 1983
    Inventor: Carlos R. Danville