Patents by Inventor Madhu Gumballi

Madhu Gumballi 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).

  • Systems and methods for distributed management of negative certificates for blockchain-based value exchange transactions
    Patent number: 11170370
    Abstract: A system and methods include a negative certificate authority for distributed management of negative certificates. An authorization restriction is associated with an untrusted user. A negative certificate generated for the untrusted user includes a public key associated with the untrusted user and an authorization restriction. The authorization restriction includes at least one global restriction, which is applicable to each consortium member that subscribes to the negative certificate. The authorization restriction includes at least one local restriction, which allows individual consortium members to further define their own locally applicable restrictions using the negative certificate authority. The negative certificate is accessible to each member of the consortium to enforce the authorization restriction against a transaction request. A secure contributor record including a unique cryptographically generated address is generated for each contributor.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: November 9, 2021
    Assignee: Wells Fargo Bank, N.A.
    Inventors: Sathya K. Balakrishnan, Shanmukeswara R. Donkada, Madhu Gumballi, Rameshchandra B. Ketharaju, Niraj Kumar, Ramanathan Ramanathan, Chandrasekaran Sivaraman, Lakshmi Sowrirajan