ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,772,004, issued on Oct. 20, was assigned to PANASONIC AUTOMOTIVE SYSTEMS Co. LTD. (Kanagawa, Japan).
"Segmented diaphragm and electroacoustic transducer" was invented by Mitsukazu Kuze (Osaka, Japan), Tetsushi Itano (Osaka, Japan), Ryouichi Uemoto (Osaka, Japan) and Hiroyuki Morimoto (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A diaphragm including at least a first portion, a second portion, and a third portion that are arranged around a predetermined reference axis extending in a vibration direction, and each have a different cross-sectional shape along a plane that includes the reference axis, in which the cross-sectional shape of the...