Patents by Inventor Christopher N. Griffiths

Christopher N. Griffiths 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).

  • Gas sterilization
    Patent number: 5512244
    Abstract: A method of sterilising objects including the operations of activating a gaseous medium, ensuring that the activated medium is substantially free of charged species and exposing the object to be sterilised to the activated gaseous medium for a period sufficient to ensure that the object is sterilised.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: April 30, 1996
    Assignee: United Kingdom Atomic Energy Authority
    Inventors: Christopher N. Griffiths, David Raybone
  • Gas activation
    Patent number: 5503807
    Abstract: An apparatus for producing chemically active species by passing a precursor gaseous medium through a plasma at pressures of at least 50 millibars is described.
    Type: Grant
    Filed: January 19, 1995
    Date of Patent: April 2, 1996
    Assignee: United Kingdom Atomic Energy Authority
    Inventors: Christopher N. Griffiths, David Raybone, Keith H. Bayliss, John Stedman
  • Removal of organic materials from a gas
    Patent number: 5340450
    Abstract: A method of and apparatus for removing organic material from a gas. The method comprises the operation of subjecting the gas to pulses of circularly polarised microwave radiation and the apparatus comprises a reaction chamber through which the gas can be passed, means for generating circularly polarised microwave radiation and means for applying the circularly polarised microwave radiation to the gas in the reaction chamber.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: August 23, 1994
    Assignee: United Kingdom Atomic Energy Authority
    Inventors: Christopher N. Griffiths, David Raybone, Keith H. Bayliss