Patents by Inventor Julien D. Couvreur

Julien D. Couvreur 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).

  • Content alteration for prevention of unauthorized scripts
    Patent number: 7624277
    Abstract: Methods for preventing unauthorized scripting. The invention generates a human interactive proof to distinguish a human from a machine by generating a random set of characters and altering each of the characters individually to inhibit computerized character recognition. The invention also includes concatenating the altered characters into a character string to be rendered to a user as a test. The character string may be altered to further inhibit computerized character recognition. Other aspects of the invention are directed to computer-readable media for use with the methods.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: November 24, 2009
    Assignee: Microsoft Corporation
    Inventors: Patrice Y. Simard, Richard Stephen Szeliski, Josh Benaloh, Iulian D. Calinov, Julien D. Couvreur
  • Human interactive proof service
    Patent number: 7533419
    Abstract: A human interactive proof (HIP) service is described. In response to a request from a web server, the HIP service generates a HIP challenge and an associated attestation. The web server can then embed the generated HIP challenge in a requested web page. The attestation is used to determine whether or not a user response to the HIP challenge is correct.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: May 12, 2009
    Assignee: Microsoft Corporation
    Inventors: Ismail Cem Paya, Josh D. Benaloh, Raja P. Perumal, Trevin M Chow, Erren Dusan Lester, Jeffrey Steinbok, Julien D. Couvreur