ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,731, issued on April 29, was assigned to Nitto Boseki Co. Ltd. (Fukushima, Japan).
"Glass cloth, prepreg, and printed wiring board" was invented by Hiroyuki Kawanishi (Koriyama, Japan), Kazuaki Minami (Koriyama, Japan), Koichi Nakamura (Koriyama, Japan), Yuichiro Ito (Fukushima, Japan) and Hirotaka Ikejiri (Fukushima, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a glass cloth that can reduce a delay time difference of a printed wiring board and for which high productivity can be achieved. In the glass cloth, a glass filament diameter of the warp yarn and the weft yarn is from 0.5 to 4.5 micro metre, the filament number of each is ...