ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,000, issued on Sept. 23, was assigned to Pigeon Corp. (Chuo-ku Tokyo, Japan).
"Breast pump" was invented by Yukifumi Ochiai (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A breast pump includes a main body, a diaphragm, a handle, a connecting portion, and a volume reduction portion. The main body includes a hood attaching portion attached to the hood, a bottle attaching portion attached to a bottle for collecting milk, and an internal passage extending between the hood attaching portion and the bottle attaching portion. The diaphragm is attached to the internal passage and is configured to generate negative pressure in the internal passage. ...