Patents by Inventor Susmita Das

Susmita Das 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).

  • Non-contact method for measurement of strain profile at a location interposed within a soft deformable object with dynamic evolution of the strain under dynamic loading or fracture of the object
    Patent number: 9869596
    Abstract: A non-invasive method for estimation of strain profile and dynamic evolution of the strain at a location interposed inside a block of soft material, includes forming a tracer grid consisting of microscopic lines or regularly spaced microscopic dots on a single plane buried inside the soft block; preparation of a deformable object embedded with the tracer grid in three primary steps: i. preparing a block of crosslinked material by crosslinking a first predetermined quantity of a pre-polymer solution containing a monomer, a crosslinking agent, and an initiator and promoter all mixed in a solvent at a known stoichiometric weight ratio; ii. transferring a grid comprising of lines or dots onto the face by direct writing or transferring from an easy release surface; and iii. crosslinking a second predetermined quantity of the same pre-polymer solution on the gel surface, such that this second crosslinked material gets welded to the first one.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: January 16, 2018
    Assignees: Indian Council of Medical Research, Indian Institute of Technology
    Inventors: Animangsu Ghatak, Susmita Das, Sukumar Laha
  • Non-Contact Method for Measurement of Strain Profile at a Location Interposed within a Soft Deformable Object with Dynamic Evolution of the Strain Under Dynamic Loading or Fracture of the Object
    Publication number: 20160069757
    Abstract: A non-invasive method for estimation of strain profile and dynamic evolution of the strain at a location interposed inside a block of soft material, includes forming a tracer grid consisting of microscopic lines or regularly spaced microscopic dots on a single plane buried inside the soft block; preparation of a deformable object embedded with the tracer grid in three primary steps: i. preparing a block of crosslinked material by crosslinking a first predetermined quantity of a pre-polymer solution containing a monomer, a crosslinking agent, and an initiator and promoter all mixed in a solvent at a known stoichiometric weight ratio; ii. transferring a grid comprising of lines or dots onto the face by direct writing or transferring from an easy release surface; and iii. crosslinking a second predetermined quantity of the same pre-polymer solution on the gel surface, such that this second crosslinked material gets welded to the first one.
    Type: Application
    Filed: April 28, 2014
    Publication date: March 10, 2016
    Inventors: Animangsu Ghatak, Susmita Das, Sukumar Laha