The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 29, 2010
Filed:
Dec. 20, 2004
William H Pettit, Rochester, NY (US);
Gerald E Voecks, La Crescenta, CA (US);
William H Pettit, Rochester, NY (US);
Gerald E Voecks, La Crescenta, CA (US);
Abstract
A method to produce a catalytic bed is initiated by forming apertures in a predetermined pattern on a strip or segment of thin foil. A pattern of desired channels is formed into the apertured foil, for example, as a herringbone pattern. The patterned foil is heat treated, and the surfaces of the foil are provided with at least one washcoat and at least one catalyzed coat, and cured. Cured foil in strip form is rolled into a multi-layer coil, or cured foil in segment form is stacked in multiple segment layers, to produce a desired geometric shape of the catalytic bed. The channels between layers of foil are offset in each successive layer to preclude channel nesting. The offset channels and apertures provide turbulent longitudinal and radial flow of a desired material throughout the catalytic bed.