Patents by Inventor Stephen John Buttery

Stephen John Buttery 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).

  • Telephone apparatus
    Patent number: 6192231
    Abstract: A telephone apparatus connects to a telecommunications network via an exchange line. It has signal recognition for detecting and recognizing calling line identity (CLI) and called number identity (CNI) signalling transmitted over the exchange line. The apparatus causes an incoming call to be transferred to a second exchange line in response to specified CLIs and/or CNIs.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: February 20, 2001
    Assignee: British Telecommunications public limited company
    Inventors: Ian David Chapman, Stephen John Buttery, Simon Walker