Patents by Inventor Denis J. McMahon

Denis J. McMahon 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).

  • Fibre optic cable having a layer of a polyethylene composition and process of making same
    Patent number: 4832443
    Abstract: A fibre optic cable suitable for use as a long distance submarine telecommunications cable comprises a tubular electrical conductor (8) within which are tension members and a core containing optical fibres (1 to 6), the tubular electrical conductor (8) being coated with a polyethylene composition comprising a linear medium density polyethylene which is a copolymer of ethylene and a C.sub.4 to C.sub.10 alpha-olefin which copolymer has a density of from 0.928 to 0.940 g/cm.sup.3, a Melt Index of at least 2.5 dg /min, a melting point of from 118.degree. to 127.degree. C. and a weight average molecular weight of from 80,000 to 100,000.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: May 23, 1989
    Assignee: Bp Chemicals Limited
    Inventors: Robert Cameron, Denis J. McMahon