Patent ID: 7335428
Filing Date: 2008-02-26
Classification: A47J,B32B,C22C,Y10T

Abstract:
1. A cooking vessel comprising a base made of a multilayer material and a side wall, said multilayer material comprising, in succession from the outside of the vessel to the inside of the vessel: an outer part, having a thickness e optionally one or more elements chosen from Mo, V, Co, Cu, Si, W, Nb, and Al, the sum of the contents of these elements being less than or equal to 10%, the balance being iron and impurities resulting from the smelting, the chemical composition furthermore satisfying the following relationships: said layer of ferromagnetic alloy optionally being inserted between two layers of austenitic stainless steel, then a core, having a thickness e optionally an inner part having a thermal expansion coefficient of greater than or equal to 6.5·10