Patents by Inventor Hirak Kumar PATRA

Hirak Kumar PATRA 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).

  • NIR fluorescence of heavy water
    Patent number: 9354170
    Abstract: A method includes detecting D2O in a sample by fluorescence spectroscopy. The fluorescence spectroscopy may be near-infrared fluorescence spectroscopy. The method may include observing an excitation wavelength of the sample at 620 nm to 640 nm. The method may also include observing an emission wavelength of the sample at 900 nm to 1000 nm. The method includes detecting D2O and D2O nano-clusters and their alterations in presence of suspended or colloidal objects including bio-molecules or cells, by emission spectroscopy.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: May 31, 2016
    Assignee: UNIVERSITY OF CALCUTTA
    Inventors: Anjan Kr. Dasgupta, Hirak Kumar Patra
  • Thermostable enzymes and methods of making and using the same
    Patent number: 9133450
    Abstract: Provided herein are compositions and methods for enhancing enzyme activity, half-life and/or thermostability. Also provided herein are compositions and methods including the enhanced enzymes. Also provided herein are methods and compositions related to improved pectinolytic enzymes, such as pectate lyase, which exhibit enhanced activity, thermostability and/or longer half-life.
    Type: Grant
    Filed: April 14, 2012
    Date of Patent: September 15, 2015
    Assignee: UNIVERSITY OF CALCUTTA
    Inventors: Arka Mukhopadhyay, Hirak Kumar Patra, Krishanu Chakraborti, Anjan Kr. Dasgupta, Dhrubajyoti Chattopadhyay
  • THERMOSTABLE ENZYMES AND METHODS OF MAKING AND USING THE SAME
    Publication number: 20140193890
    Abstract: Provided herein are compositions and methods for enhancing enzyme activity, half-life and/or thermostability. Also provided herein are compositions and methods including the enhanced enzymes. Also provided herein are methods and compositions related to improved pectinolytic enzymes, such as pectate lyase, which exhibit enhanced activity, thermostability and/or longer half-life.
    Type: Application
    Filed: April 14, 2012
    Publication date: July 10, 2014
    Inventors: Arka Mukhopadhyay, Hirak Kumar Patra, Krishanu Chakraborti, Anjan Kr. Dasgupta, Dhrubajyoti Chattopadhyay
  • NIR FLUORESCENCE OF HEAVY WATER
    Publication number: 20120206721
    Abstract: A method includes detecting D2O in a sample by fluorescence spectroscopy. The fluorescence spectroscopy may be near-infrared fluorescence spectroscopy. The method may include observing an excitation wavelength of the sample at 620 nm to 640 nm. The method may also include observing an emission wavelength of the sample at 900 nm to 1000 nm. The method includes detecting D2O and D2O nano-clusters and their alterations in presence of suspended or colloidal objects including bio-molecules or cells, by emission spectroscopy.
    Type: Application
    Filed: April 5, 2011
    Publication date: August 16, 2012
    Inventors: Anjan Kr. Dasgupta, Hirak Kumar Patra
  • SYSTEMS AND METHODS EMPLOYING GIANT STOKES SHIFT
    Publication number: 20110046489
    Abstract: A method comprising exposing a sample comprising water to near infrared (NIR) light and detecting the presence of one or more objects by measuring a Stokes shift in the emission spectra in the near infrared.
    Type: Application
    Filed: December 1, 2009
    Publication date: February 24, 2011
    Applicant: UNIVERSITY OF CALCUTTA
    Inventors: Hirak Kumar PATRA, Anjan Kumar Dasgupta