Patents by Inventor Heinz Bruckmann

Heinz Bruckmann 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
  • Process for the manufacture of ferrosilicon or silicon alloys containing strontium
    Patent number: 4581203
    Abstract: A process is described for the manufacture of ferrosilicon or silicon alloys containing strontium and having a low aluminum and calcium content, in which a strontium compound is introduced together with an alkaline earth metal, an alkaline earth metal-containing alloy or calcium carbide as reducing agent into the molten ferrosilicon or silicon. The process is distinguished by low industrial expense and good strontium yields.
    Type: Grant
    Filed: June 25, 1984
    Date of Patent: April 8, 1986
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventor: Heinz Bruckmann