Patents by Inventor Jules Legrand

Jules Legrand 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).

  • Installation for heating starting materials for glass melting
    Patent number: 4099953
    Abstract: An installation for heating starting materials intended for the melting of glass includes a melting furnace and a preheater for the starting materials which is arranged downstream of the melting furnace and to which a pipe is connected for from the melting furnace introducing the hot residual gases from the furnace.
    Type: Grant
    Filed: November 10, 1977
    Date of Patent: July 11, 1978
    Assignee: Polysius AG
    Inventors: Louis Rondeaux, Jules Legrand, Claude Baelde