Patents by Inventor Egon Rapolthy

Egon Rapolthy 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).

  • Electrolytic cell for the production of aluminium
    Patent number: 4124476
    Abstract: The amount of bulging and cracking in the carbon floor of an electrolytic reduction cell for the production of aluminium is reduced by the provision of a recess in the steel container which accommodates the carbon floor as it expands. The recess is filled with a first material which is easily compressible and a second material which deforms only at a relatively higher load and transmits the expansion forces to the steel container without producing any permanent deformation thereof.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: November 7, 1978
    Inventor: Egon Rapolthy