Patents by Inventor Stephen I. Hall

Stephen I. Hall 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).

  • Exhaust gas purification
    Patent number: 5440876
    Abstract: A method of removing particulate and other materials from the exhaust gases from an internal combustion engine in which the exhaust gas is passed through a bed of charged ferro-electric materials. Three forms of apparatus for carrying out the method are described.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: August 15, 1995
    Assignee: United Kingdom Atomic Energy Authority
    Inventors: Keith H. Bayliss, Stephen I. Hall, David Raybone