Patents by Inventor Gemunu H. Gunaratne

Gemunu H. Gunaratne 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).

  • Fabrication of self assembling nano-structures
    Patent number: 9957157
    Abstract: A new approach to fabricating regularly patterned nano-scale structures, by self assembly of the structures is disclosed, where a pattern of nano-lines are deposited on a substrate and nano-structures are grown by self assembly in regions between the lines to form regular or patterned nano-scale structures, which are ideally suited for the construction nano-scale materials, nano-scale electronic devices and other nano-scale objects, apparatuses or devices. The invention also relates to methods of making and using same.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: May 1, 2018
    Assignee: University of Houtson System
    Inventors: Gemunu H. Gunaratne, Girish Nathan, Donald J. Kouri, Pradeep Sharma, Fazle Hussain, Feng Shi
  • Methods for performing DAF data filtering and padding
    Patent number: 7272265
    Abstract: A method for padding, filtering, denoising, image enhancing and increased time-frequency acquisition is described for digitized data of a data set is described where unknown data is estimated using real data by adding unknown data points in a manner that the padding routine can estimate the interior data set including known and unknown data to a given accuracy on the known data points. The method also provides filtering using non-interpolating, well-tempered distributed approximating functional (NIDAF)-low-band-pass filters. The method also provides for symmetric and/or anti-symmetric extension of the data set so that the data set may be better refined and can be filtered by Fourier and other type of low frequency or harmonic filters.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: September 18, 2007
    Assignee: The University of Houston System
    Inventors: Donald K. Kouri, David K. Hoffman, Mark Arnold, Ioannis A. Kakadiaris, Zhuoer Shi, DeSheng Zhang, Gemunu H. Gunaratne, Haixiang Wang, Guowei W. Wei, Zheng Bao Xi'an
  • Methods for performing DAF data filtering and padding
    Patent number: 6847737
    Abstract: A method for padding, filtering, denoising, image enhancing and increased time-frequency acquisition is described for digitized data of a data set where unknown data is estimated using real data by adding unknown data points in a manner that the padding routine can estimate the interior data set including known and unknown data to a given accuracy on the known data points. The method also provides filtering using non-interpolating, well-tempered distributed approximating functional (NIDAF)-low-band-pass filters. The method also provides for symmetric and/or anti-symmetric extension of the data set so that the data set may be better refined and can be filtered by Fourier and other type of low frequency or harmonic filters.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: January 25, 2005
    Assignees: University of Houston System, Iowa State University Research Foundation, Inc.
    Inventors: Donald J. Kouri, David K. Hoffman, Ioannis Kakadiaris, Zhuoer Shi, DeSheng Zhang, Gemunu H. Gunaratne, Haixiang Wang, G. W. Wei, Zheng Bao
  • Methods for performing DAF data filtering and padding
    Publication number: 20040071363
    Abstract: A method for padding, filtering, denoising, image enhancing and increased time-frequency acquisition is described for digitized data of a data set is described where unknown data is estimated using real data by adding unknown data points in a manner that the padding routine can estimate the interior data set including known and unknown data to a given accuracy on the known data points. The method also provides filtering using non-interpolating, well-tempered distributed approximating functional (NIDAF)-low-band-pass filters. The method also provides for symmetric and/or anti-symmetric extension of the data set so that the data set may be better refined and can be filtered by Fourier and other type of low frequency or harmonic filters.
    Type: Application
    Filed: June 4, 2003
    Publication date: April 15, 2004
    Inventors: Donald J. Kouri, David K. Hoffman, Ioannis A. Kakadiaris, Zhuoer Shi, DeSheng Zhang, Gemunu H. Gunaratne, Mark Arnold, Haixiang Wang, Guowei W. Wei, Zheng Bao