Patents by Inventor Anthony J. Testa

Anthony J. Testa 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).

  • Stable membranes from sulfonated polyarylethers
    Patent number: 4990252
    Abstract: The invention provides a novel thin film composite or coated membrane suitable for reverse osmosis, ultrafiltration and microfiltration applications, and having a porous polymeric substrate with one or more microporous layers to which a thin film or coating comprising a sulfonated polyarylether is attached substantively to provide an oxidatively stable, thin hydrophilic film or coating layer, and a method for manufacturing and using the same.
    Type: Grant
    Filed: August 22, 1989
    Date of Patent: February 5, 1991
    Assignee: Hydanautics
    Inventors: John E. Tomaschke, Anthony J. Testa, James G. Vouros