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:
Jul. 15, 2025
Filed:
Dec. 17, 2021
Johnson Matthey Public Limited Company, London, GB;
Kumarasen Muruyandy, Negeri Sembilan, MY;
Johnson Matthey Public Limited Company, London, GB;
Abstract
An apparatus and a method for coating substrates with washcoats in which a substrate () is engaged with a headset () of a substrate coating apparatus () below a washcoat showerhead () are disclosed. The washcoat is discharged from the washcoat showerhead () onto an upper surface () of the substrate under control of a valve assembly () before being drawn through the substrate by use of a vacuum generator (). The valve assembly () comprises an outlet valve movable between a closed state and an open state. The valve assembly () creates a pressure drop within an interior of the washcoat showerhead () when the outlet valve moves from its open state to its closed state.