Patents by Inventor Ashleigh M. Kewney

Ashleigh M. Kewney 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).

  • Apparatus for depositing a ceramic coating on a filament
    Patent number: 5221353
    Abstract: A process for depositing a ceramic coating on a filament, which comprises heating the filament by passage of an electric current via at least two electrodes, and passing the heated filament through a deposition chamber containing gases which on contact with the hot filament deposit the required coating; characterized in that after deposition of the coating, the coated filament passes through an electrode containing a liquid metal mixture which is a mercury/indium or mercury/cadmium amalgam or a gallium/indium mixture.
    Type: Grant
    Filed: July 24, 1992
    Date of Patent: June 22, 1993
    Assignee: The British Petroleum Company
    Inventors: Philip Gruber, Ashleigh M. Kewney, Robert A. Shatwell
  • Process for depositing a ceramic coating on a filament
    Patent number: 5156883
    Abstract: A process for depositing a ceramic coating on a filament, which comprises heating the filament by passage of an electric current via at least two electrodes, and passing the heated filament through a deposition chamber containing games which on contact with the hot filament deposit the required coating; characterized in that after deposition of the coating, the coated filament passes through an electrode containing a liquid metal mixture which is a mercury/indium or mercury/cadmium amalgam or a gallium/indium mixture.
    Type: Grant
    Filed: July 2, 1991
    Date of Patent: October 20, 1992
    Assignee: The British Petroleum Company P.L.C.
    Inventors: Philip Gruber, Ashleigh M. Kewney, Robert A. Shatwell