Patents by Inventor Andrew K. Leighton

Andrew K. Leighton 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).

  • Monolithic element with reinforced corners for the filtration of particles
    Patent number: 7658779
    Abstract: The invention relates to a honeycomb monolithic element for the filtration of particles, characterized in that the peripheral channels forming part of the outer wall of said element are configured to help in the formation of an outer wall whose inner face is substantially flat over the whole length of the element and in that said flat wall also has an increased thickness at the corners, so that, on a cross section, the ratio R of the thickness Ec of the wall, measured along the bisecting line of the angle at a corner of the element, over the minimal thickness Emin of said wall is greater than 1.5.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: February 9, 2010
    Assignee: SAINT-GOBAIN Centre de Recherches et d'Etudes European
    Inventors: Francisco Jose Carranza, David E. Woolley, Andrew K. Leighton
  • MONOLITHIC ELEMENT WITH REINFORCED CORNERS FOR THE FILTRATION OF PARTICLES
    Publication number: 20080072573
    Abstract: The invention relates to a honeycomb monolithic element for the filtration of particles, characterized in that the peripheral channels forming part of the outer wall of said element are configured to help in the formation of an outer wall whose inner face is substantially flat over the whole length of the element and in that said flat wall also has an increased thickness at the corners, so that, on a cross section, the ratio R of the thickness Ec of the wall, measured along the bisecting line of the angle at a corner of the element, over the minimal thickness Emin of said wall is greater than 1.5.
    Type: Application
    Filed: December 6, 2006
    Publication date: March 27, 2008
    Applicant: SAINT GOBAIN CENTRE DE RECHERCHES ET D-ETUDES EUR.
    Inventors: Francisco Jose Carranza, David E. Woolley, Andrew K. Leighton