Patents by Inventor Bates, Roger J.

Bates, Roger J. 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).

  • Optical fibre ducts having inner layer suited to blown fibre installation and a fire retardant outer layer
    Patent number: 5358011
    Abstract: A duct assembly comprises a plurality of ducts longitudinally joined by an interconnecting web. The ducts are preferably arranged in a ribbon format, a single duct in thickness, enabling greater flexibility. The ducts preferably include an inner layer having a bore therethrough and an outer fire retardant layer. A method for manufacturing such a flexible duct is also disclosed.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: October 25, 1994
    Assignee: British Telecommunications public limited company
    Inventors: David J. Stockton, Bates, Roger J., Clifford F. Cook, Philip A. Barker