Patents by Inventor Daniel T. Diggs

Daniel T. Diggs 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).

  • Process for producing composite membranes
    Patent number: 5514413
    Abstract: A process is provided for fabricating composite membranes by coating a porous substrate with a solution of selective polymer. A reserve of non-solvent medium is incorporated in the substrate pore network which allows the substrate to be successfully coated with a polymer solution formulated in a solvent medium which is also a solvent for the substrate material.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: May 7, 1996
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Jacob A. Van't Hof, Pushpinder S. Puri, Stephen C. Lynch, Albert A. Brooks, Daniel T. Diggs
  • Membrane separation module
    Patent number: 5207906
    Abstract: An improved shellside feed, countercurrent flow, hollow fiber membrane separation module is provided wherein one or more flow tubes are incorporated into the conventional design. The flow tubes increase the efficiency of the membrane separation module by reducing undesirable flow patterns that are present in the conventional module.
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: May 4, 1993
    Assignee: Permea, Inc.
    Inventors: Steven R. Auvil, James C. Sorensen, Daniel T. Diggs