Patents by Inventor Glenda S. Villman

Glenda S. Villman 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).

  • Nylon-PEBA copolymer catheter
    Patent number: 4898591
    Abstract: Inner and outer layers of a braided body portion of an intravascular catheter as well as a soft tip portion are formed from different proportioned blends of nylon and copolymer of ester linked polyethylene and polyamide to produce optimum mechanical properties in the catheter. One or more surfaces of the catheter are coated with a hydrogel containing a copolymer of polyurethane and polyvinylpyrrolidone to provide improved lubricity and antithrombogenicity.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: February 6, 1990
    Assignee: Mallinckrodt, Inc.
    Inventors: Yue-Teh Jang, Vern L. Liebmann, Glenda S. Villman, Surendra A. Amin