Patents by Inventor Gitesh Kumar

Gitesh Kumar 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).

  • Variable headspace sampling system
    Patent number: 6571650
    Abstract: The invention relates to an apparatus and method for providing a modifiable headspace for measuring a concentration of volatile releases from a sample. The invention includes a collapsible housing for containing the air sample and a plurality of spacers between the housing and the sample surface for separating them from one another. The plurality of spacers permit the distance between the housing and the sample to be adjustable.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: June 3, 2003
    Assignee: PerkinElmer Instruments LLC
    Inventors: Avinash Dalmia, Otto J. Prohaska, Paul G. Saviano, Gitesh Kumar
  • VARIABLE HEADSPACE SAMPLING SYSTEM
    Publication number: 20030074987
    Abstract: The invention relates to an apparatus and method for providing a modifiable headspace for measuring a concentration of volatile releases from a sample. The invention includes a collapsible housing for containing the air sample and a plurality of spacers between the housing and the sample surface for separating them from one another. The plurality of spacers permit the distance between the housing and the sample to be adjustable.
    Type: Application
    Filed: October 22, 2001
    Publication date: April 24, 2003
    Inventors: Avinash Dalmia, Otto J. Prohaska, Paul G. Saviano, Gitesh Kumar
  • Monitoring constituents of an animal organ using statistical correlation
    Patent number: 6430513
    Abstract: Constituents such as oxy- and deoxy-hemoglobin are monitored non-invasively in an animal organ such as a brain with a spectrometric instrument by passing radiation through the organ. Concentrations are computed from the spectral intensities and from a statistical correlation model. To predetermine the correlation model, the procedures are effected for a plurality of organs of a same type with each organ having established concentrations of the selected constituents, and the correlation model is statistically determined from the concentrations and corresponding intensities. For more accuracy computations are normalized to path length which may be determined by utilizing several discrete wavelengths with RF modulations.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: August 6, 2002
    Assignee: PerkinElmer Instruments LLC
    Inventors: Yongdong Wang, David H. Tracy, Paul G. Saviano, Alan M. Ganz, Koichi Nishikida, Gitesh Kumar
  • Monitoring constituents of an animal organ using discrete radiation
    Patent number: 6195574
    Abstract: Constituents such as oxy- and deoxy-hemoglobin are monitored non-invasively in an animal organ such as a brain with a spectrometric instrument by passing radiation through the organ. An input beam has a plurality of discrete wavelengths modulated with radio frequency. Output radiation is received by a detector from which output amplitude and output phase are determined for each wavelength. Absorption coefficient is computed from the amplitude and phase, and concentrations of constituents are thereby calculated.
    Type: Grant
    Filed: August 28, 1999
    Date of Patent: February 27, 2001
    Assignee: PerkinElmer Instruments LLC
    Inventors: Gitesh Kumar, Joseph L. DiCesare