Patents by Inventor Francois Keime

Francois Keime 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: 5069842
    Abstract: The invention concerns a process for shaping, by compacting, carbonaceous blocks formed by a carbonaceous paste based on a carbonaceous aggregate such as coke, anthracite or graphite, and an organic cokable binder such as tar and optional additives. The carbonaceous paste is introduced into a mould in which some of the walls are displaceable with respect to their initial position and there are successively applied to said paste at least one stress .sigma..sub.n along an axis A.sub.n, then at least one stress .sigma..sub.n+1 along an axis A.sub.n+1 which is not coincident with the axis A.sub.n, then at least one stress .sigma..sub.n+2 along an axis A.sub.n+2 which is not coincident with the axis A.sub.n+1, and so forth, repetitively, each stress .sigma..sub.(i) being applied after at least partial suppression of the stress .sigma..sub.(i-1). Use of the process substantially enhances compactness of the carbonaceous blocks.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: December 3, 1991
    Assignee: Aluminum Pechiney
    Inventors: Claude Vanvoren, Benoit Coste, Francois Keime
  • Patent number: 4990081
    Abstract: An apparatus for shaping, by compacting, carbonaceous blocks formed by a carbonaceous paste based on a carbonaceous aggregate such as coke, anthracite or graphite, and an organic cokable binder such as tar and optional additives. The carbonaceous paste is introduced into a mould in which some of the walls are displaceable with respect to their initial position and there are successively applied to said paste at least one stress .sigma.n along an axis An, then at least one stress .sigma.n+1 along an axis An+1 which is not coincident with the axis An, then at least one stress .sigma.n+2 along an axis An+2 which is not coincident with the axis An+1, and so forth, repetitively, each stress .sigma.(i) being applied after at least partial suppression of the stress .sigma.(i-1). Use of the apparatus substantially enhances compactness of the carbonaceous blocks.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: February 5, 1991
    Assignee: Aluminium Pechiney
    Inventors: Claude VanVoren, Benoit Coste, Jean Biarez, Francois Keime