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:
Sep. 29, 2015
Filed:
Apr. 01, 2010
Christopher John Bennett, Exton, PA (US);
John P. Coll, Barto, PA (US);
Debnath DE, Malvern, PA (US);
Andrea Hawkins, Reading, GB;
Wendy Manning, Barto, PA (US);
Christopher John Bennett, Exton, PA (US);
John P. Coll, Barto, PA (US);
Debnath De, Malvern, PA (US);
Andrea Hawkins, Reading, GB;
Wendy Manning, Barto, PA (US);
Johnson Matthey Public Limited Company, London, GB;
Abstract
A method of coating substrate monoliths is disclosed. The method comprises locating a containment means on top of the first end face of the monolith; and dosing a predetermined quantity of washcoat composition comprising a liquid phase, at least one polysaccharide rheology modifier and at least one of (i) a suspension of metal oxide particles into the containment means; and (ii) at least one metal salt solute in the liquid phase. The locating step may occur before or after the dosing step. Pressure is applied to the washcoat composition to generate shear stress and to transfer an entirety of washcoat composition into the channels of the monolith by plug flow. Substantially all of the predetermined quantity is retained within the monolith. The part-coated monolith is then rotated so that the second end face is located at the top, and the first three steps are repeated without drying the part-coated monolith.