ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,563,669, issued on Feb. 24, was assigned to FUJIKURA PRINTED CIRCUITS LTD. (Tokyo).
"Method for producing flexible printed wiring board" was invented by Daisuke Arai (Chiba, Japan) and Toshiya Iwamura (Akita, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing a flexible printed wiring board using a photoresist includes placing the photoresist, including a first region and a second region, on a substrate, placing a first photomask including a first light-transmitting portion such that the first light-transmitting portion faces the first region to expose the photoresist through the first light-transmitting portion, and placing a s...