ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,465,532, issued on Nov. 11, was assigned to Daio Paper Corp. (Ehime, Japan).
"Underpants-type disposable wearing article" was invented by Hiroki Arai (Tochigi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Underpants-type disposable wearing articles are provided wherein transverse tearing is hard to develop at a stacked sheet number change part in the outer member. This problem is solved by an underpants-type disposable wearing article, in which cuts 61 each extending longitudinally across a stacked sheet number change part 62 where the number of stacked sheets constituting the outer member 20 varies are formed adjacent on the central side in the...