Patents by Inventor David Harold Whitehead

David Harold Whitehead 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 for controlling the distribution of software code updates
    Patent number: 7522732
    Abstract: A method is described for controlling the distribution of a software code update for an embedded software application on a device. The method includes the steps of assigning an asymmetric key pair to the software application and another asymmetric key pair to the sender of the software code update. The software code update is sent in a secure manner to one or more devices while preventing devices not possessing to the appropriate keys from obtaining the software code update.
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: April 21, 2009
    Assignee: Lexmark International, Inc.
    Inventor: David Harold Whitehead