Patents by Inventor John T. Keiser

John T. Keiser 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).

  • Artificial implant with fiber-flocked blood-contacting surface
    Patent number: 4084266
    Abstract: Blood-contacting surfaces of artificial implant devices which have been flocked with fibers of a blood-compatible polymeric material to promote formation of a stable and viable biological lining when the device has been implanted in a living body, are treated to strengthen the bonds between the fibers and the substrate surface and to interlock the fibers with each other so as to substantially reduce the possibility of fiber separation and release from the substrate surface into the blood stream. The treatment is effected by applying to the flocked surface a dilute solution of an adhesive material in a solvent therefor, the content of the adhesive material in the treating solution being controlled so as to be sufficient to coat the fibers only at their points of contact with each other and with the substrate surface.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: April 18, 1978
    Assignee: The United States of America as represented by the Secretary of Health, Education and Welfare
    Inventors: Victor L. Poirier, John T. Keiser
  • Method of flocking blood-contacting surfaces on artificial implant devices
    Patent number: 4016303
    Abstract: Blood-contacting surfaces of artificial implant devices which have been flocked with fibers of a blood-compatible polymeric material to promote formation of a stable and viable biological lining when the device has been implanted in a living body, are treated to strengthen the bonds between the fibers and the substrate surface and to interlock the fibers with each other so as to substantially reduce the possibility of fiber separation and release from the substrate surface into the blood stream. The treatment is effected by applying to the flocked surface a dilute solution of an adhesive material in a solvent therefor, the content of the adhesive material in the treating solution being controlled so as to be sufficient to coat the fibers only at their points of contact with each other and with the substrate surface.
    Type: Grant
    Filed: August 6, 1975
    Date of Patent: April 5, 1977
    Assignee: The United States of America
    Inventors: Victor L. Poirier, John T. Keiser