Patents by Inventor Bill Simpson

Bill Simpson 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).

  • Replicating message queues between clustered email gateway systems
    Patent number: 7970844
    Abstract: A method of “stateful failover” is provided that allows email gateway systems in a cluster to deliver email messages that have been accepted for delivery by a member of the cluster, but has failed with out delivering the messages. The method involves creating a backup copy of the messages that have been accepted for delivery by one email gateway system in the stateful failover cluster on one or more other email gateway systems in the stateful failover cluster. Upon detecting the failure of the email gateway system that accepted the message, another member of the stateful failover cluster that has access to the backup copy of the message queue takes responsibility for the delivery of the messages on the mirrored queue.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: June 28, 2011
    Assignee: WatchGuard Technologies, Inc.
    Inventors: Robert Osborne, Bill Simpson, Rod Gilchrist
  • REPLICATING MESSAGE QUEUES BETWEEN CLUSTERED EMAIL GATEWAY SYSTEMS
    Publication number: 20090320120
    Abstract: A method of “stateful failover” is provided that allows email gateway systems in a cluster to deliver email messages that have been accepted for delivery by a member of the cluster, but has failed with out delivering the messages. The method involves creating a backup copy of the messages that have been accepted for delivery by one email gateway system in the stateful failover cluster on one or more other email gateway systems in the stateful failover cluster. Upon detecting the failure of the email gateway system that accepted the message, another member of the stateful failover cluster that has access to the backup copy of the message queue takes responsibility for the delivery of the messages on the mirrored queue.
    Type: Application
    Filed: August 26, 2009
    Publication date: December 24, 2009
    Applicant: WATCHGUARD TECHNOLOGIES, INC.
    Inventors: Robert Osborne, Bill Simpson, Rod Gilchrist
  • Replicating message queues between clustered email gateway systems
    Patent number: 7584256
    Abstract: A method of “stateful failover” is provided that allows email gateway systems in a cluster to deliver email messages that have been accepted for delivery by a member of the cluster, but has failed with out delivering the messages. The method involves creating a backup copy of the messages that have been accepted for delivery by one email gateway system in the stateful failover cluster on one or more other email gateway systems in the stateful failover cluster. Upon detecting the failure of the email gateway system that accepted the message, another member of the stateful failover cluster that has access to the backup copy of the message queue takes responsibility for the delivery of the messages on the mirrored queue.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: September 1, 2009
    Assignee: Borderware Technologies Inc.
    Inventors: Robert Osborne, Bill Simpson, Rod Gilchrist
  • Replicating message queues between clustered email gateway systems
    Publication number: 20050228867
    Abstract: A method of “stateful failover” is provided that allows email gateway systems in a cluster to deliver email messages that have been accepted for delivery by a member of the cluster, but has failed with out delivering the messages. The method involves creating a backup copy of the messages that have been accepted for delivery by one email gateway system in the stateful failover cluster on one or more other email gateway systems in the stateful failover cluster. Upon detecting the failure of the email gateway system that accepted the message, another member of the stateful failover cluster that has access to the backup copy of the message queue takes responsibility for the delivery of the messages on the mirrored queue.
    Type: Application
    Filed: April 11, 2005
    Publication date: October 13, 2005
    Inventors: Robert Osborne, Bill Simpson, Rod Gilchrist