ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,096, issued on Dec. 9, was assigned to DUPLO SEIKO Corp. (Kinokawa, Japan).
"Paper folding device" was invented by Chikara Miyamoto (Kinokawa, Japan) and Masanobu Ohashi (Kinokawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An object of the present disclosure is to prevent wrinkles in a folding line portion of a paper irrespective of the conditions such as the type, the size, and the like of the paper, thereby securing the precision of the position of a folding line when a flap (such as a flap portion) of an envelope is folded back. The folding unit comprises a pair of an upper and a lower guide plates that defines part of the paper conveya...