Patents by Inventor Sairaju Tallavarjula

Sairaju Tallavarjula 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).

  • Publication number: 20090030632
    Abstract: Methods for matching semiconductor plasma processing chambers using a calibrated spectrometer are disclosed. In one embodiment, plasma attributes are measured for a process in a reference chamber and a process in a sample chamber. Measuring the plasma attributes during process perturbations allows for the correlation of process parameters to the plasma optical emission spectra. The process parameters can then be adjusted to yield a processed substrate which matches that of the reference chamber. Methods for monitoring the stability of a plasma processing chamber using a calibrated spectrometer are also disclosed.
    Type: Application
    Filed: July 27, 2007
    Publication date: January 29, 2009
    Inventors: SAIRAJU TALLAVARJULA, Aaron M. Hunter, Joseph M. Ranish, Johanes Swenberg, Robert M. Haney
  • Patent number: 6803297
    Abstract: A method for activating implanted dopants in a semiconductor substrate to form shallow junctions comprises the steps of: maintaining gas pressure in the processing chamber at a level significantly lower than atmospheric pressure, providing a flow of a carrier gas into the processing chamber, subjecting the substrate to a temperature treatment process, and introducing oxygen into the processing chamber during all or part of the temperature treatment process.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: October 12, 2004
    Assignee: Applied Materials, Inc.
    Inventors: Dean Jennings, Sairaju Tallavarjula, Randhir Thakur
  • Publication number: 20040058512
    Abstract: A method for activating implanted dopants in a semiconductor substrate to form shallow junctions comprises the steps of: maintaining gas pressure in the processing chamber at a level significantly lower than atmospheric pressure, providing a flow of a carrier gas into the processing chamber, subjecting the substrate to a temperature treatment process, and introducing oxygen into the processing chamber during all or part of the temperature treatment process.
    Type: Application
    Filed: September 20, 2002
    Publication date: March 25, 2004
    Inventors: Dean Jennings, Sairaju Tallavarjula, Randhir Thakur