Patents by Inventor Ian P. Sanderson

Ian P. Sanderson 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).

  • Melt spinning filter
    Patent number: 4088431
    Abstract: A melt spinning process utilizes a spinning pack which contains a filter comprising a shaped, rigid, porous structure comprising inert granular material, e.g. sand or alumina particles, bonded with a permanent binding agent, e.g. sodium silicate or a complex phosphate of aluminium. Synthetic thermoplastic polymers are melt spun, particularly polyesters.
    Type: Grant
    Filed: April 29, 1975
    Date of Patent: May 9, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: Archibald H. Johnson, Ian P. Sanderson