Patents by Inventor Stanley Zalkind

Stanley Zalkind 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).

  • Powder injection molding and infiltration process
    Patent number: 6319437
    Abstract: A powder injection molding and infiltration process. A powder of a skeleton material having a relatively high melting point is mixed with a composite binder to form a mold mixture. The composite binder is comprised of at least two binder materials. The mold mixture is molded into a desired shape in a mold device to produce a molded part. The composite binder is then removed to produce voids in the molded part and the voids are filled by infiltrating an infiltrant comprised of an infiltrant material having a relatively low melting point to produce a composite molded part. In a preferred embodiment the skeleton material is TiB2 and the infiltrant material is aluminum and the composite binder is comprised of a plastic and a wax. In this embodiment the wax portion of the composite binder is removed using a solvent and the plastic is removed during the infiltration step. The resulting composite part has a TiB2 skeleton with voids substantially filled with aluminum.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: November 20, 2001
    Assignee: Hi-Z Technology, Inc.
    Inventors: Norbert B. Elsner, Stanley Zalkind, Ian Sidney R. Clark, Fred Leavitt