Patents by Inventor Harold Sit

Harold Sit 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).

  • Network implemented communication system
    Patent number: 7203189
    Abstract: A network implemented communication system, comprising a Local Area Network (LAN), a plurality of endpoints connected to the LAN, each of the endpoints including a communication application for communicating via a standard protocol, at least one server connected to the LAN for third party control of communications between the endpoints, and software within each of the endpoints and the server for implementing features which do not require direct connection between the endpoints.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: April 10, 2007
    Assignee: Mitel Networks Corporation
    Inventors: Debbie Pinard, Harold Sit, Sonya Fullarton, Eliana Peres
  • Private branch exchange implemented using H.323 gatekeeper
    Patent number: 6819665
    Abstract: A network implemented communication system, comprising a Local Area Network (LAN), a plurality of H.323 endpoints connected to the LAN, each of the endpoints including a communication application for communicating via H.323, at least one H.323 Gatekeeper connected to the LAN for third party control of communications between the H.323 endpoints, and software within each of the H.323 endpoints and the H.323 Gatekeeper for implementing features which do not require direct connection between the H.323 endpoints.
    Type: Grant
    Filed: May 4, 2000
    Date of Patent: November 16, 2004
    Assignee: Mitel Knowledge Corporation
    Inventors: Debbie Pinard, Harold Sit, Sonya Fullarton, Eliana Peres
  • Private branch exchange
    Publication number: 20030007460
    Abstract: A network implemented communication system, comprising a Local Area Network (LAN), a plurality of endpoints connected to the LAN, each of the endpoints including a communication application for communicating via a standard protocol, at least one server connected to the LAN for third party control of communications between the endpoints, and software within each of the endpoints and the server for implementing features which do not require direct connection between the endpoints.
    Type: Application
    Filed: July 19, 2002
    Publication date: January 9, 2003
    Inventors: Debbie Pinard, Harold Sit, Sonya Fullarton, Eliana Peres
  • Local area communications server
    Patent number: 5657446
    Abstract: A communication system is comprised of a computer system connected to a LAN, a local area communications system (LAX) connected to the LAN, peripheral communications devices connected to the LAX, apparatus for controlling communications between the devices via the LAX under control of programs resident in a computer of the computer system, the controlling apparatus comprising a database for storing server system configuration data, a peripheral driver, a call control for controlling the peripheral driver and accessing application programs and the system configuration data, and a protocol converter for passing control and data messages in manners proprietary to each peripheral communications device from and to the peripheral communications devices via peripheral drivers and to and from a variety of standard and non-standard application programs stored in the computer system.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: August 12, 1997
    Assignee: Mitel Corporation
    Inventors: Deborah L. Pinard, Harold Sit, Anthony Niro