Patents by Inventor Sushil Bhattacharjee

Sushil Bhattacharjee 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).

  • Method and apparatus for determining authenticity
    Patent number: 8655044
    Abstract: A method of determining the authenticity of a document of value provided with a watermark pattern, the method comprising determining whether the watermark pattern exhibits a discontinuity.
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: February 18, 2014
    Assignee: De La Rue International Limited
    Inventors: Sushil Bhattacharjee, Alexandre Gret, Hansjorg Klock, Edward John Brindley
  • METHOD AND APPARATUS FOR DETERMINING AUTHENTICITY
    Publication number: 20110187501
    Abstract: A method of determining the authenticity of a document of value provided with a watermark pattern, the method comprising determining whether the watermark pattern exhibits a discontinuity.
    Type: Application
    Filed: May 2, 2008
    Publication date: August 4, 2011
    Applicant: DE LA RUE INTERNATIONAL LIMITED
    Inventors: Sushil Bhattacharjee, Alexandre Gret, Hansjorg Klock, Edward John Brindley