Patents by Inventor John B. Foster

John B. Foster 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).

  • Venous return catheter
    Patent number: 4639252
    Abstract: A venous return catheter is provided having a first diameter distal portion suitable for insertion in a vena cava, a second, larger diameter proximal portion, and a transition portion forming a smooth transition between the first and second diameter portions. Drainage openings are provided in both the proximal and distal catheter portions. The catheter is of unitary construction, having a smooth bore through its entire length. It is also constructed from a soft, resilient material, but is reinforced with a harder, stiffer material in the region of the proximal drainage openings. The catheter may also be provided with wire reinforcement. The catheter is manufactured by a dip-molding process utilizing a male mandrel as a form.
    Type: Grant
    Filed: April 5, 1985
    Date of Patent: January 27, 1987
    Assignee: Research Medical, Inc.
    Inventors: Michael N. Kelly, John B. Foster, Robert D. Foster
  • Valve cover for an engine
    Patent number: D252878
    Type: Grant
    Filed: June 15, 1977
    Date of Patent: September 11, 1979
    Assignee: W. R. Grace & Co.
    Inventors: Ralph R. Bellino, John B. Foster, James R. Powers