Patents by Inventor Stewart Russell Jurgensen

Stewart Russell Jurgensen 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).

  • Method of separating cells from a sample
    Patent number: 7524641
    Abstract: Rare cells are separated from a sample fluid by a positive selection or negative selection antibody by centrifuging in a tube containing a harvesting float. The harvesting float has an axial passage and a density to settle in the sample fluid and expand the layer of the target component. The positive selection antibody is preferably coupled to a particulate carrier, such as a microbead, to attach to the target component. The negative selection antibody forms a complex or conjugate with a contaminating component. In the positive separation, the particulate carrier is recovered in the axial passage of the float.
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: April 28, 2009
    Assignee: Becton, Dickinson and Company
    Inventors: Stewart Russell Jurgensen, Sheila Ann Lloyd
  • Method of separating cells from a sample
    Patent number: 7205157
    Abstract: Rare cells are separated from a sample fluid by a positive selection or negative selection antibody by centrifuging in a tube containing a harvesting float. The harvesting float has an axial passage and a density to settle in the sample fluid and expand the layer of the target component. The antibody is preferably coupled to a particulate carrier, such as a microbead, to attach either the target component or a contaminating component to the particulate carrier. In the positive separation, the particulate carrier is recovered in the axial passage of the float.
    Type: Grant
    Filed: January 8, 2001
    Date of Patent: April 17, 2007
    Assignee: Becton, Dickinson and Company
    Inventors: Stewart Russell Jurgensen, Sheila Ann Lloyd
  • Method of separating cells from a sample
    Publication number: 20020090741
    Abstract: Rare cells are separated from a sample fluid by a positive selection or negative selection antibody by centrifuging in a tube containing a harvesting float. The harvesting float has an axial passage and a density to settle in the sample fluid and expand the layer of the target component. The antibody is preferably coupled to a particulate carrier, such as a microbead, to attach either the target component or a contaminating component to the particulate carrier. In the positive separation, the particulate carrier is recovered in the axial passage of the float.
    Type: Application
    Filed: January 8, 2001
    Publication date: July 11, 2002
    Inventors: Stewart Russell Jurgensen, Sheila Ann Lloyd