Patents by Inventor Leonard A. Dunning

Leonard A. Dunning 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).

  • Oven and method for heating thermoplastic articles
    Patent number: 4486172
    Abstract: The present invention is an oven and method of operation for heating thermoplastic articles. Articles are fed into the oven on a conveyor belt. There is a heating plate directly beneath the article bearing surface of the conveyor belt which heats the supported side of the article. The surface of the article not in contact with the belt is heated by conventional means within the oven.
    Type: Grant
    Filed: October 3, 1980
    Date of Patent: December 4, 1984
    Assignee: Allied Corporation
    Inventor: Leonard A. Dunning