Patents by Inventor Ernst A. Weiser

Ernst A. Weiser 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).

  • Inoculant alloy based on ferrosilicon or silicon and process for its preparation
    Patent number: 4643768
    Abstract: An inoculant alloy based on ferrosilicon or silicon for the manufacture of cast iron with lamellar, compact or spheroidal graphite is described, this alloy comprising(a) between 0.1 and 10% of barium and/or zirconium,(b) less than 2% of aluminum and(c) 0.3% of calcium.This inoculant alloy is distinguished by particularly good suppression of the precipitation of carbide and by its preparation process which is industrially simple and thus has favorable costs.
    Type: Grant
    Filed: September 10, 1985
    Date of Patent: February 17, 1987
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Heinz Bruckmann, Friedrich Wolfsgruber, Ernst A. Weiser
  • Treatment agent for cast iron melts and a process for the production thereof
    Patent number: 4540436
    Abstract: The present invention provides a treatment agent for cast iron melts based upon ferrosilicon magnesium with a silicon content of from 40 to 80% by weight and a magnesium content of from 0.5 to 15% by weight, said agent being in the form of granules with a specific surface area of from 0.2 to 0.8 m.sup.2 /g. according to BET.The present invention also provides a process for the production of this treatment agent, wherein a jet of molten ferrosilicon magnesium alloy is directed on to a bounce plate made of fire-resistant material and the melt droplets which bounce back from bounce plate are allowed to solidify in a liquid-filled collection receiver.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: September 10, 1985
    Assignees: SKW Trostberg AG, Metallgesellschaft AG
    Inventors: Friedrich Wolfsgruber, Ernst A. Weiser, Werner Gmohling, Hans Kern, Karl J. Reifferscheid