Patents by Inventor Leonard I. Friedman

Leonard I. Friedman 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).

  • Patent number: 5232437
    Abstract: Methods and systems for collection of blood components, such as plasma, from donors are provided. One method includes the steps of collecting a unit of whole blood from a donor; forcing the collected blood unit through a plasma separator; accumulating the plasma in a container; and returning concentrated cells to the donor. One system includes a disposable blood collection set and a reusable fixture into which the collection set can be mounted. The fixture is operated by a self-contained energy source, requiring no exterior electrical connection or other external source of energy.
    Type: Grant
    Filed: March 21, 1990
    Date of Patent: August 3, 1993
    Assignee: Baxter International Inc.
    Inventors: Michael J. Lysaght, Daniel R. Boggs, Philip L. Ritger, Robert R. Stromberg, Leonard I. Friedman
  • Patent number: 4911703
    Abstract: Methods and systems for collection of blood components, such as plasma, from donors are provided. One method includes the steps of collecting a unit of whole blood froma donor; forcing the collected blood unit through a plasma separator; accumulating the plasma in a container; and returning concentrated cells to the donor. One system includes a disposable blood collection set and a reusable fixture into which the collection set can be mounted. The fixture is operated by a self-contained energy source, requiring no exterior electrical connection or other external source of energy.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: March 27, 1990
    Assignees: Baxter International Inc., American National Red Cross
    Inventors: Michael J. Lysaght, Daniel R. Boggs, Philip L. Ritger, Robert R. Stromberg, Leonard I. Friedman
  • Patent number: 4557717
    Abstract: A centrifuge cup insert having an outer container and an inner container disposed therein with a spacer means between the containers to afford a reservoir between the containers capable of holding a liquid, the reservoir communicating with the atmosphere; associated apparatus for weighing the cup insert and dispensing a metered amount of fluid into the reservoir; and a method of using the cup insert with or without the associated apparatus.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: December 10, 1985
    Assignee: American National Red Cross
    Inventor: Leonard I. Friedman