Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kozo Onishi0
Date of Patent
May 19, 2009
Patent Application Number
11785942
Date Filed
April 23, 2007
Patent Primary Examiner
Patent abstract
In the process for producing methionine of the present invention uses, as an equipment material for a step of hydrolyzing 5-(β-methylmercaptoethyl)hydantoin in the presence of potassium carbonate to produce methionine, a stainless steel containing 21.0 to 30.0% by weight of a Cr element, 2.5 to 11.0% by weight of a Ni element and 1.0 to 5.0% by weight of a Mo element, a ratio of the total content of the Cr element and the Mo element to the content of the Ni element being from 4.7 to 14.0, is used.
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