Patents by Inventor Ronald James Leonard

Ronald James Leonard 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).

  • Variable capacity reservoir assembly
    Patent number: 4026669
    Abstract: A variable capacity reservoir assembly for use in a blood oxygenation system which includes a collapsible reservoir and an elongated unitary clamp. The reservoir is of fluid-impermeable flexible material and includes an expandable portion capable of holding a predetermined maximum volume of blood. The reservoir also includes one main blood inlet and one main blood outlet. The clamp is bifurcated and slidably engages the reservoir, preferably between the inlet and the outlet and grasps the expandable portion so as to control the expansion thereof and thereby control its blood holding capacity.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: May 31, 1977
    Assignee: Baxter Laboratories, Inc.
    Inventors: Ronald James Leonard, Evelyn Miller