Patents by Inventor Sunil S. Dalal

Sunil S. Dalal 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).

  • System for identifying clusters in scatter plots using smoothed polygons with optimal boundaries
    Patent number: 6944338
    Abstract: An apparatus and method for identifying clusters in two-dimensional data by generating a two-dimensional histogram characterized by a grid of bins, determining a density estimate based on the bins, and identifying at least one cluster in the data. A smoothed density estimate is generated using a Gaussian kernel estimator algorithm. Clusters are identified by locating peaks and valleys in the density estimate (e.g., by comparing slope of adjacent bins). Boundaries (e.g., polygons) around clusters are identified using bins after bins are identified as being associated with a cluster. Boundaries can be simplified (e.g., by reducing the number of vertices in a polygon) to facilitate data manipulation.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: September 13, 2005
    Assignee: Becton Dickinson and Company
    Inventors: Michael D. Lock, Sunil S. Dalal, Ilya Gluhovsky
  • Instrument setup system for a fluorescence analyzer
    Patent number: 6897954
    Abstract: The present invention provides instruments for analyzing a multiplicity of fluorescent dyes using a multiplicity of amplifying photodetectors, methods for using the instruments, methods for setting the instrument parameters, and methods for resetting the instrument parameters following a changed in photodetector amplification. The present invention is particularly applicable in the field of flow cytometry.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: May 24, 2005
    Assignee: Becton, Dickinson and Company
    Inventors: James E. Bishop, Sunil S. Dalal, Zhenxiang Gong, Michael D. Lock
  • Instrument setup system for a fluorescence analyzer
    Publication number: 20040119974
    Abstract: The present invention provides instruments for analyzing a multiplicity of fluorescent dyes using a multiplicity of amplifying photodetectors, methods for using the instruments, methods for setting the instrument parameters, and methods for resetting the instrument parameters following a changed in photodetector amplification. The present invention is particularly applicable in the field of flow cytometry.
    Type: Application
    Filed: December 20, 2002
    Publication date: June 24, 2004
    Inventors: James E. Bishop, Sunil S. Dalal, Zhenxiang Gong, Michael D. Lock
  • System for identifying clusters in scatter plots using smoothed polygons with optimal boundaries
    Publication number: 20020029235
    Abstract: An apparatus and method for identifying clusters in two-dimensional data by generating a two-dimensional histogram characterized by a grid of bins, determining a density estimate based on the bins, and identifying at least one cluster in the data. A smoothed density estimate is generated using a Gaussian kernel estimator algorithm. Clusters are identified by locating peaks and valleys in the density estimate (e.g., by comparing slope of adjacent bins). Boundaries (e.g., polygons) around clusters are identified using bins after bins are identified as being associated with a cluster. Boundaries can be simplified (e.g., by reducing the number of vertices in a polygon) to facilitate data manipulation.
    Type: Application
    Filed: May 11, 2001
    Publication date: March 7, 2002
    Applicant: Becton Dickinson and Company
    Inventors: Michael D. Lock, Sunil S. Dalal, Ilya Gluhovsky