Patents by Inventor Praveen Cheriyan Ashok

Praveen Cheriyan Ashok 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: 20210298592
    Abstract: A technique for generating a mapping relating values of a scan parameter of an ocular imaging apparatus that are indicative of scan locations in an eye at which the apparatus acquires digital images of imaged regions of the eye, to respective values of a conversion factor for calculating a distance between designated ocular features in the imaged regions, by: simulating light ray propagation to relate each value of the scan parameter in a sequence of scan parameter values to a corresponding location in a model eye; calculating, for each scan parameter value, a distance between the corresponding location in the model eye and a location in the model eye corresponding to an adjacent value in the sequence; and using the calculated distances to generate a respective value of the conversion factor for each scan parameter value.
    Type: Application
    Filed: March 19, 2021
    Publication date: September 30, 2021
    Applicant: OPTOS PLC
    Inventors: Praveen Cheriyan Ashok, Michael Verhoek, Sriram Vikraman Sithalakshmi Amma
  • Patent number: 10588513
    Abstract: An optical apparatus comprising a disposable non-magnetic optical fibre probe for coupling light into a sample and receiving light from the sample for performing Raman spectroscopy, and a non-magnetic optical extension releasably connected to the disposable non-magnetic optical probe for transmitting light into the disposable non-magnetic optical probe and receiving light from the disposable non-magnetic optical probe.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: March 17, 2020
    Assignee: UNIVERSITY COURT OF THE UNIVERSITY OF ST ANDREWS
    Inventors: Kishan Dholakia, Praveen Cheriyan Ashok
  • Patent number: 10444215
    Abstract: A Raman spectroscopic detection device comprising at least one microfluidic sample channel; at least one excitation waveguide for exciting a Raman signal and at least one collection waveguide for collecting a Raman signal. The output of the excitation waveguide and the input of the collection waveguide are positioned directly in the microfluidic sample channel.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: October 15, 2019
    Assignee: University Court of the University of St Andrews
    Inventors: Praveen Cheriyan Ashok, Gajendra Pratap Singh, Kishan Dholakia
  • Patent number: 10222362
    Abstract: A Raman spectroscopic detection device comprising at least one microfluidic sample channel; at least one excitation waveguide for exciting a Raman signal and at least one collection waveguide for collecting a Raman signal. The output of the excitation waveguide and the input of the collection waveguide are positioned directly in the microfluidic sample channel.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: March 5, 2019
    Assignee: UNIVERSITY COURT OF THE UNIVERSITY OF ST ANDREWS
    Inventors: Praveen Cheriyan Ashok, Gajendra Pratap Singh, Kishan Dholakia
  • Publication number: 20170138919
    Abstract: A Raman spectroscopic detection device comprising at least one microfluidic sample channel; at least one excitation waveguide for exciting a Raman signal and at least one collection waveguide for collecting a Raman signal.
    Type: Application
    Filed: November 18, 2016
    Publication date: May 18, 2017
    Inventors: Praveen Cheriyan Ashok, Gajendra Pratap Singh, Kishan Dholakia
  • Publication number: 20160084766
    Abstract: A Raman spectroscopic detection device comprising at least one microfluidic sample channel; at least one excitation waveguide for exciting a Raman signal and at least one collection waveguide for collecting a Raman signal. The output of the excitation waveguide and the input of the collection waveguide are positioned directly in the microfluidic sample channel.
    Type: Application
    Filed: September 22, 2015
    Publication date: March 24, 2016
    Applicant: University Court of the University of St Andrews
    Inventors: Praveen Cheriyan Ashok, Gajendra Pratap Singh, Kishan Dholakia
  • Publication number: 20150313471
    Abstract: An optical apparatus comprising a disposable non-magnetic optical fibre probe for coupling light into a sample and receiving light from the sample for performing Raman spectroscopy, and a non-magnetic optical extension releasably connected to the disposable non-magnetic optical probe for transmitting light into the disposable non-magnetic optical probe and receiving light from the disposable non-magnetic optical probe.
    Type: Application
    Filed: January 20, 2014
    Publication date: November 5, 2015
    Inventors: Kishan DHOLAKIA, Praveen Cheriyan ASHOK
  • Patent number: 8638431
    Abstract: A microfluidic device comprising at least one microfluidic channel with an input and an output for allowing fluid flow; and at least one Raman fiber based probe having an excitation fiber probe and/or a collection fiber probe positioned so that one end of the probe is in the microfluidic channel.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: January 28, 2014
    Assignee: University Court of the University of St Andrews
    Inventors: Praveen Cheriyan Ashok, Gajendra Pratap Singh, Kishan Dholakia, Khay Tan
  • Publication number: 20130222799
    Abstract: A Raman spectroscopic detection device comprising at least one microfluidic sample channel; at least one excitation waveguide for exciting a Raman signal and at least one collection waveguide for collecting a Raman signal. The output of the excitation waveguide and the input of the collection waveguide are positioned directly in the microfluidic sample channel.
    Type: Application
    Filed: September 28, 2011
    Publication date: August 29, 2013
    Applicant: University Court of The University of St Andrews
    Inventors: Praveen Cheriyan Ashok, Gajendra Pratap Singh, Kishan Dholakia
  • Publication number: 20130164828
    Abstract: An integrated fibre based device for transfecting material into a cell comprising an optical fiber that has a lens formed at its end for directing light to a surface of the cell, and a channel for delivery of the material for transfection into the cell.
    Type: Application
    Filed: June 10, 2011
    Publication date: June 27, 2013
    Applicant: University Court of The University of St. Andrews
    Inventors: Kishan Dholakia, Na Ma, Praveen Cheriyan Ashok, David Stevenson, Francis James Gunn-Moore
  • Publication number: 20120075627
    Abstract: A microfluidic device comprising at least one microfluidic channel with an input and an output for allowing fluid flow; and at least one Raman fiber based probe having an excitation fiber probe and/or a collection fiber probe positioned so that one end of the probe is in the microfluidic channel.
    Type: Application
    Filed: September 28, 2010
    Publication date: March 29, 2012
    Applicant: University Court of The University of St Andrews
    Inventors: Praveen Cheriyan Ashok, Gajendra Pratap Singh, Kishan Dholakia, Khay Tan