Patents by Inventor John J. Pellegrino

John J. Pellegrino 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).

  • Methods of making and using improved microporous hollow fibers, the improved hollow fibers and tube bundles constructed of the improved fibers
    Patent number: 5258202
    Abstract: The processes of the invention enable depositable PFSA to be provided over he entire inner surface of hollow fibers. Additionally, the processes of this invention provide a fiber which is coated by a thin coating of PFSA which is approximately 5-40 .mu.m thick. The fiber can advantageously withstand pressure gradients between 20-75 psig throughout its wall before leakage.
    Type: Grant
    Filed: October 2, 1990
    Date of Patent: November 2, 1993
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventors: John J. Pellegrino, Myong K. Ko, Paul J. Marko