Patents by Inventor Prashant Narayan Kulkarni

Prashant Narayan Kulkarni 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).

  • Deterring information copying including deterrence of currency counterfeiting
    Patent number: 9935775
    Abstract: A method for deterring information copying, includes: combining a watermark serial number incorporate in a given medium with a content serial number to create a combined serial number, the watermark serial number uniquely identifies the given medium, and the content serial number uniquely identifies a content stored on the given medium; creating a digital signature by encoding the combined serial number using a private key of a public/private key pair; imprinting the content serial number and the digital signature on the given medium; decoding the digital signature imprinted on the given medium using a public key of the public/private key pair to obtain the combined serial number; comparing the decoded combined serial number with the watermark serial number and the content serial number imprinted of the given medium; and in response to determining that both match the combined serial number, determining that the content is authentic.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: April 3, 2018
    Assignee: International Business Machines Corporation
    Inventors: Rajendran Appavu, Prashant Narayan Kulkarni