Patents by Inventor Benjamin Ainslie

Benjamin Ainslie 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 wave guides
    Patent number: 4936650
    Abstract: Glass fibre suitable for use as the core in fibre lasers and/or amplifiers has a core which consists of a continuous glass phase and a dispersed phase of crystallites. The preferred crystallites are the oxides and phosphates of rare earth metals, e.g. Nd.sub.2 O.sub.3 and NdP.sub.5 O.sub.14. The small size concentration and distribution of the crystallites keeps the attenuation down to acceptable levels.
    Type: Grant
    Filed: June 9, 1988
    Date of Patent: June 26, 1990
    Assignee: British Telecommunications public limited company
    Inventors: Benjamin Ainslie, Susan Craig, Steven T. Davey