Patents by Inventor Leo Lewis

Leo Lewis 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).

  • Radiopaque polymers
    Patent number: 11957755
    Abstract: Radiopaque hydrogels, in particular radiopaque hydrogel microspheres, comprising a polymer having 1,2-dil or 1,3-diol groups acetalized with radiopaque species.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: April 16, 2024
    Assignee: Boston Scientific Medical Device Limited
    Inventors: Stephane Hohn, Andrew Lennard Lewis, Sean Leo Willis, Matthew R. Dreher, Koorosh Ashrafi, Yiqing Tang
  • Spacing arrangement
    Publication number: 20050265825
    Abstract: A spacing arrangement for a gas turbine engine 10. The spacing arrangement being arranged such that as a rotor blade 26 of a compressor 13 rotates, the rotor disc 28 will move outwards and forwards to maintain a substantially constant gap 36 between the rotor blade 26 and an inclined casing 20.
    Type: Application
    Filed: April 15, 2005
    Publication date: December 1, 2005
    Applicant: ROLLS-ROYCE PLC
    Inventor: Leo Lewis
  • Cantilevered stator stage
    Publication number: 20050152778
    Abstract: A cantilevered stator stage for the axial compressor 14 of a gas turbine engine 10 in which the stator tips 26 rub against an abrasive section 24 on the rotor drum 22 during initial running of the engine 10 to abrade the tips 26 of the stator to provide optimised stator tip running clearance.
    Type: Application
    Filed: December 30, 2004
    Publication date: July 14, 2005
    Inventor: Leo Lewis