Patents by Inventor Roberto Zelaschi

Roberto Zelaschi 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).

  • Roller furnace provided with a passage for the drying and/or refiring of ceramic or refractory products
    Patent number: 4775316
    Abstract: A roller furnace having a passage (3) for the firing of ceramic or refractory products, such as tiles and the like, is provided with a passage (6) running parallel to, and arranged below the firing passage (3) for effecting a heat treatment on a product, possibly with hot gases removed from the firing passage (3).
    Type: Grant
    Filed: May 13, 1987
    Date of Patent: October 4, 1988
    Assignee: Welke Industriale S.P.A.
    Inventor: Roberto Zelaschi