ALEXANDRIA, Va., June 18 -- United States Patent no. 12,324,730, issued on June 10, was assigned to Unicharm Corp. (Ehime, Japan).
"Disposable diaper" was invented by Takashi Matsui (Kanonji, Japan), Yasuhiro Yamanaka (Kanonji, Japan) and Satoru Sakaguchi (Kanonji, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A disposable diaper having a front-rear direction and a width direction includes: a first waistline region; a second waistline region; a crotch; an absorbent core; a waistband; a body portion disposed on a non-skin facing surface side of the waistband; and a space that opens toward the crotch region disposed on the non-skin facing surface side of the waistband. The body portion includes a first ...