Patents by Inventor Subhasish Dutta Gupta

Subhasish Dutta Gupta 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).

  • Patent number: 7894137
    Abstract: An antireflective coating is disclosed having at least one layer of a first material with a first index of refraction and a first thickness, the first index of refraction and first thickness substantially conforming to a refractive index profile matching a reflectionless potential.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: February 22, 2011
    Assignees: The Board of Regents for Oklahoma State University, The University of Hyderabad
    Inventors: Subhasish Dutta Gupta, Girish S. Agarwal