Patent 7984840 was granted and assigned to NISSAN MOTOR CO.,LTD. on July, 2011 by the United States Patent and Trademark Office.
According to a metal joining method of the present invention, first and second dissimilar metals are joined together by interposing between the first and second metal materials a third metal material dissimilar to the first and second metal materials and causing eutectic melting at least either at an interface between the first and third metal materials or at an interface between the second and third metal materials.