ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,402,246, issued on Aug. 26, was assigned to SUMITOMO BAKELITE Co. LTD. (Tokyo).
"Circuit board" was invented by Nobuo Tagashira (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A heat radiating substrate includes an insulating layer (11) (insulating substrate) and a circuit pattern (20) of a metal provided on the insulating layer (11) in direct contact with the insulating layer (11), in which a contour line of the circuit pattern (20) has a corner portion (27) that forms a curved line exhibiting a circular arc with a radius of 0.2 mm or more and 5 mm or less when viewed in a top view."
The patent was filed on June 1, 2021, under Application No. 18...