US Patent Issued to Daido Steel on July 7 for "Motor core production method and heat treatment device used therefor" (Japanese Inventor)

ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,217, issued on July 7, was assigned to Daido Steel Co. Ltd. (Nagoya, Japan).

"Motor core production method and heat treatment device used therefor" was invented by Koichiro Asai (Nagoya, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a motor core production method including: a preparation step of preparing a laminate of electromagnetic steel sheets each processed into a predetermined shape; a first heating step of heating the laminate at an atmospheric temperature of 500deg C. to 800deg C. in an atmospheric gas comprising at least one kind selected from the group consisting of a low oxidizing gas and a reducing ...