US Patent Issued to Proterial on July 7 for "Steel for knives, steel for martensitic knives, knife, and production method for steel for martensitic knives" (Japanese Inventor)

ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,218, issued on July 7, was assigned to Proterial Ltd. (Tokyo).

"Steel for knives, steel for martensitic knives, knife, and production method for steel for martensitic knives" was invented by Kentaro Fukumoto (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are: steel for knives, having a higher hardness and better corrosion resistance than conventional steel for knives; a knife; steel for martensitic knives; and a production method for same. The steel for knives comprises a component composition containing, in mass %, 0.45%-1.00% C, 0.1%-1.5% Si, 0.1%-1.5% Mn, 7.5%-11.0% Cr, and 0.5%-3.0% of either Mo or W or a complex of both (Mo+W/2),...