Patents by Inventor Michael G. Kunitani

Michael G. Kunitani 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: 5269937
    Abstract: A high angle light scattering detector using classical Rayleigh scattering. A high intensity arc light source, filtered to leave only one wavelength illuminates a flow cell. Through the flow cell, very small particles such as biological proteins flow in solution after separation by HPLC or some other means. A UV detector generates data regarding the weight concentration of the eluting particles and a scattered light detector collecting scattered light at angles of approximately 90.degree. generates a scattered light signal. The incident light intensity is also measured. The average molecular weight is then computed using the scattered and incident light data the weight concentration data and a simplified mathematical relationship from which the size factor P and the viral coefficients have been eliminated.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: December 14, 1993
    Assignee: Cetus Corporation
    Inventors: Gavin D. Dollinger, Robert L. Cunico, Michael G. Kunitani
  • Patent number: 5250186
    Abstract: A high angle light scattering detector using classical Rayleigh scattering. A high intensity arc light source, filtered to leave only one wavelength illuminates a flow cell. Through the flow cell, very small particles such as biological proteins flow in solution after separation by HPLC or some other means. A UV detector generates data regarding the weight concentration of the eluting particles and a scattered light detector collecting scattered light at angles of approximately 90.degree. generates a scattered light signal. The incident light intensity is also measured. The average molecular weight is then computed using the scattered and incident light data, the weight concentration data and a simplified mathematical relationship from which the size factor P and the viral coefficients have been eliminated.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: October 5, 1993
    Assignee: Cetus Corporation
    Inventors: Gavin D. Dollinger, Robert L. Cunico, Michael G. Kunitani