Patents by Inventor Martin S. Swift

Martin S. Swift 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).

  • Filters for light metals
    Patent number: 5520823
    Abstract: Filters for filtering molten light metals comprise a reticular foam formed from a composition comprising graphite, wollastonite, silica and a borosilicate glass and consist of a crystalline phase comprising graphite and wollastonite dispersed in a substantially amorphous matrix of borosilicate glass. The filters can readily be machined accurately from large pieces of the filter material, and they do not pick up moisture from the atmosphere when stored.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: May 28, 1996
    Assignee: Foseco International Limited
    Inventors: David L. Jones, Martin S. Swift, Reinhard Stoetzel