Patents by Inventor Preston J. Keeler, III

Preston J. Keeler, III 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).

  • Blood recovery system and method
    Patent number: 5024613
    Abstract: An intraoperative blood recovery system and method for salvaging operative blood while simultaneously delivering previously collected blood to a reinfusion system. A blood collection and transfer reservoir, having multiple compartments which can be separated by vacuum or pressure barriers, is designed to maintain a continuous suction for blood inflow while blood previously collected can be simultaneously transported through the reservoir to achieve the uninterrupted flow of blood into and delivery of blood out of the reservoir.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: June 18, 1991
    Assignee: Pfizer Hospital Products Group, Inc.
    Inventors: Alfred V. Vasconcellos, Preston J. Keeler, III
  • Fluid flow control apparatus
    Patent number: 4994055
    Abstract: A reservoir outlet control device for controlling fluid flow from a reservoir. The device is particularly suitable for controlling fluid outflow from a blood collecting and blood delivery reservoir.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: February 19, 1991
    Assignee: Pfizer Hospital Products Group, Inc.
    Inventors: Douglas M. Spranger, Karl D. Kirk, III, Robert Cohen, Preston J. Keeler, III, Jeffrey A. Stein
  • Blood recovery system and method
    Patent number: 4923438
    Abstract: An intraoperative blood recovery system and method for salvaging operative blood while simultaneously delivering previously collected blood to a reinfusion system. A blood collection and transfer reservoir, having multiple compartments which can be separated by vacuum or pressure barriers, is designed to maintain a continuous suction for blood inflow while blood previously collected can be simultaneously transported through the reservoir to achieve an uninterrupted flow of blood into and delivery of blood out of the reservoir.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: May 8, 1990
    Assignee: Pfizer Hospital Products Group, Inc.
    Inventors: Alfred V. Vasconcellos, Preston J. Keeler, III