ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,307, issued on Aug. 12, was assigned to Sumitomo Riko Co. Ltd. (Aichi, Japan) and TOKAI CHEMICAL INDUSTRIES LTD. (Gifu, Japan).
"Sound-absorbing cover" was invented by Koji Tomiyama (Aichi, Japan), Kazuyoshi Onishi (Aichi, Japan), Yuhei Adachi (Aichi, Japan), Kazuto Tanaka (Aichi, Japan), Yasuo Suzuki (Gifu, Japan) and Hiroki Taguchi (Gifu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sound-absorbing cover comprises a first sound-absorbing layer and a second sound-absorbing layer made of foam, a first skin layer of the first sound-absorbing layer and a second skin layer of the second sound-absorbing layer are layered in a state of being ma...