Patents by Inventor Kei Izumikawa

Kei Izumikawa 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).

  • Devices and methods for detecting and sorting biological particles in a liquid flow using substantially uniform intensity along a direction of flow of a flow cell
    Patent number: 8767212
    Abstract: In at least one embodiment, a flow cytometer includes a flow cell defining a sheath flow encompassing a dyed biological particle, a first optical source irradiating first light onto the flow cell, a second optical source irradiating second light onto the flow cell downstream where the first light is irradiated, a first optical detector detecting scattered light or fluorescence from the biological particle to output a first electrical signal corresponding thereto, a plurality of second optical detectors arranged along the flow cell, each of the second optical detectors detecting fluorescence from the biological particle to output a second electrical signal corresponding thereto, and a signal processor summing the second electrical signals output from the plurality of the second optical detectors in a plurality of time windows estimated based upon when the first optical detector detects the scattered light or the fluorescence, thereby to increase the second electrical signals of the fluorescence from the biolog
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: July 1, 2014
    Assignee: Bay Bioscience Kabushiki Kaisha
    Inventors: Masahiko Kanda, Shigeaki Kato, Sari Fujiyama, Kei Izumikawa, Toshihiro Chikanishi
  • Flow cytometer and flow cytometry
    Publication number: 20110176127
    Abstract: In at least one embodiment, a flow cytometer includes a flow cell defining a sheath flow encompassing a dyed biological particle, a first optical source irradiating first light onto the flow cell, a second optical source irradiating second light onto the flow cell downstream where the first light is irradiated, a first optical detector detecting scattered light or fluorescence from the biological particle to output a first electrical signal corresponding thereto, a plurality of second optical detectors arranged along the flow cell, each of the second optical detectors detecting fluorescence from the biological particle to output a second electrical signal corresponding thereto, and a signal processor summing the second electrical signals output from the plurality of the second optical detectors in a plurality of time windows estimated based upon when the first optical detector detects the scattered light or the fluorescence, thereby to increase the second electrical signals of the fluorescence from the biolog
    Type: Application
    Filed: October 4, 2010
    Publication date: July 21, 2011
    Inventors: Masahiko Kanda, Shigeaki Kato, Sari Fujiyama, Kei Izumikawa, Toshihiro Chikanishi