Patents by Inventor Edward Wilson Merrill

Edward Wilson Merrill 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).

  • Catheter and the method of making
    Patent number: 4055682
    Abstract: A silicone catheter is rendered hydrophilic by contacting it with N-vinyl pyrrolidone (NVP) in bulk or in solution and exposing the catheter and NVP to ionizing radiation at high dose rate. Penetration of the NVP beyond a thin surface layer is prevented by controlling the dose of ionizing radiation and the concentration of NVP.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: October 25, 1977
    Assignee: High Voltage Engineering Corporation
    Inventor: Edward Wilson Merrill