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:
Feb. 23, 1988
Filed:
Feb. 10, 1987
Nippon Steel Corporation, Tokyo, JP;
Abstract
A method for producing a metallic substrate used for an automobile exhaust gas purifying device, which comprises the steps of: preparing a heat-resisting steel member having a length and capable of containing therein other members; densely filling the heat-resisting steel member with easy-soluble material members and with stainless steel members for separating the easy-soluble material members from each other, to form a filled body; hot-working the filled body to reduce the cross sectional area thereof for achieving a metallic bond between the stainless steel members; cutting the filled body to a predetermined length; and removing the easy-soluble material from the filled body by a chemical and/or an electrochemical treatment for boring throughholes to expose catalyst carrier-destined surfaces of the stainless steel.