ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,465,988, issued on Nov. 11, was assigned to TOYOTA JIDOSHA K.K. (Toyota, Japan).
"Brazing method and brazing apparatus for brazing metal plates" was invented by Akihisa Nishimura (Chiryu, Japan), Toru Sugiyama (Nagakute, Japan) and Koji Kasahara (Toyota, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A brazing method for brazing metal pieces together via a brazing material includes the step of, in a heating chamber controlled to a preset oxygen concentration or less, sandwiching a workpiece of which the metal plates are stacked via the brazing material between a first heating plate and a second heating plate in such a manner that the first heating...