ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,567, issued on Feb. 3, was assigned to FUJI ELECTRIC Co. LTD. (Kawasaki, Japan).
"Sheet-shaped solder" was invented by Katsunori Suzuki (Matsumoto, Japan) and Hidenao Kuribayashi (Matsumoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sheet-shaped solder that is not susceptible to electromigration, and a solder joint part and semiconductor device using the same are provided. A pressed sheet-shaped solder containing a solder alloy containing Sn as a primary component, an additional element, and an incidental impurity is provided. A pressed surface of the sheet-shaped solder is a surface perpendicular to a main surface of the sheet-shaped so...