Patents by Inventor Andrew M. Palka

Andrew M. Palka 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).

  • Anonymous purchases while allowing verifiable identities for refunds returned along the paths taken to make the purchases
    Patent number: 7257554
    Abstract: An electronic commerce system and method has a number of computer systems connected by a network, including a broker computer system having a database of scrips representing a form of currency, a vendor computer system having a database containing products which may be exchanged for the scrips, and a consumer computer system with which a user may initiate transactions to obtain the products contained in the database of the vendor computer system in return for scrip. The broker issues scrip to the consumer having a Customer ID including a Hash subfield containing a value produced by consumer identifying information hashed with a nonce. When the scrip is exchanged for additional scrip, the value in the Hash subfield is hashed with another nonce. The consumer stores the nonces used to produce the Hash subfield in a wallet.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: August 14, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Steven C. Glassman, Mark S. Manasse, John W. Court, Edmund J. Grohn, Andrew M. Palka, Nigel Norris