US Patent Issued to JFE STEEL on Oct. 14 for "Resistance spot welding method and weld member production method" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,440,917, issued on Oct. 14, was assigned to JFE STEEL Corp. (Tokyo).

"Resistance spot welding method and weld member production method" was invented by Chikaumi Sawanishi (Tokyo), Yasuaki Okita (Tokyo) and Hiroshi Matsuda (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a resistance spot welding method wherein main current passage includes two or more electrode force application steps including a first electrode force application step and a second electrode force application step following the first electrode force application step, an electrode force F1 in the first electrode force application step and an electrode force F2 in the seco...