Patents by Inventor Rowland Sammut

Rowland Sammut 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 fiber and optical fiber device
    Patent number: 6614975
    Abstract: An optical fibre has a cladding layer surrounding a core, the cladding layer comprising at least a first, relatively inner generally cylindrical region, a third, relatively outer generally cylindrical region, and a second region disposed between the first and third regions, the second region having a higher refractive index than the first and third regions; and the peak difference in refractive index between the first cladding region and the core being less than about 0.0030.
    Type: Grant
    Filed: January 3, 2001
    Date of Patent: September 2, 2003
    Assignee: University of Southampton
    Inventors: David John Richardson, Neil Gregory Raphael Broderick, Herman Leonard Offerhaus, Liang Dong, Rowland Sammut
  • Optical fibre and optical fibre device
    Publication number: 20020018630
    Abstract: An optical fibre has a cladding layer surrounding a core, the cladding layer comprising at least a first, relatively inner generally cylindrical region, a third, relatively outer generally cylindrical region, and a second region disposed between the first and third regions, the second region having a higher refractive index than the first and third regions; and the peak difference in refractive index between the first cladding region and the core being less than about 0.0030.
    Type: Application
    Filed: January 3, 2001
    Publication date: February 14, 2002
    Inventors: David John Richardson, Neil Gregory Raphael Broderick, Herman Leonard Offerhaus, Liang Dong, Rowland Sammut