Patents by Inventor Christopher Borrill

Christopher Borrill 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).

  • Cable enclosure arrangement
    Patent number: 6245999
    Abstract: An arrangement for enclosing an elongate substrate, e.g. a cable connection includes an outer resilient sleeve held in a radially-expanded configuration by being mounted on an inner holdout member, wherein the holdout member includes a generally tubular member that has a slit extending longitudinally thereof such that application of a force radially thereof causes the holdout member to reduce in circumference and to collapse around the substrate under the action of the recovery force of the outer resilient sleeve.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: June 12, 2001
    Assignee: Raychem Limited
    Inventors: Philip Costigan, Christopher Borrill, Philip Roland Winfield, Jonathan Wakenshaw
  • Polyetherketonimides
    Patent number: 5260404
    Abstract: Polyetherketoneimides and copolymers thereof having an imide repeat unit of formula ##STR1## wherein Ri is ##STR2## in which A is a direct bond or --O--or another substantially non-electron-withdrawing group, and/or Ra is an at least partly arylene moiety other than m- or P-phonylene.These polymers tend to have improved melt stability and other properties, especially when made from a pre-existing imide monomer, instead of by the known amic acid route which results in uncyclised amic acid residues in the polymer.
    Type: Grant
    Filed: July 24, 1992
    Date of Patent: November 9, 1993
    Assignee: Raychem Limited
    Inventors: Richard Whiteley, Christopher Borrill