Patents by Inventor Christopher M. Earhart

Christopher M. Earhart 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).

  • Magnetic separation device for cell sorting and analysis
    Patent number: 8481336
    Abstract: A magnetic sifter is adapted for manipulation of biological cells by providing a greater pore density at the edge of the sifter than at the center. Application of an external magnetic field to the sifter causes high magnetic fields and field gradients at the sifter pores. These conditions are suitable for capturing magnetically tagged or labeled cells at the sifter pores. Altering the external magnetic field can provide controlled capture and/or release of magnetically labeled cells from the sifter pores. The purpose of having a greater pore density at the periphery of the sifter than at the center is to provide improved flow rate uniformity through the sifter. Such flow rate uniformity is advantageous for cell quantification.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: July 9, 2013
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Christopher M. Earhart, Shan X. Wang, Robert J. Wilson
  • Magnetic separation device for cell sorting and analysis
    Publication number: 20110059468
    Abstract: A magnetic sifter is adapted for manipulation of biological cells by providing a greater pore density at the edge of the sifter than at the center. Application of an external magnetic field to the sifter causes high magnetic fields and field gradients at the sifter pores. These conditions are suitable for capturing magnetically tagged or labeled cells at the sifter pores. Altering the external magnetic field can provide controlled capture and/or release of magnetically labeled cells from the sifter pores. The purpose of having a greater pore density at the periphery of the sifter than at the center is to provide improved flow rate uniformity through the sifter. Such flow rate uniformity is advantageous for cell quantification.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 10, 2011
    Inventors: Christopher M. Earhart, Shan X. Wang, Robert J. Wilson