ALEXANDRIA, Va., March 19 -- United States Patent no. 12,256,184, issued on March 18, was assigned to AUDIO-TECHNICA Corp. (Tokyo).
"Earpiece and earphone" was invented by Yosuke Takubo (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An earpiece whose inner cylinder is not crushed when the earpiece is inserted into an ear canal of a user is provided. An earpiece according to the present invention includes an inner cylinder 1 that includes one open end and the other open end and is attached to a sound conduit C of an earphone E, and an outer cylinder 2 connected to the one end of the inner cylinder and extending in an umbrella shape toward the other end of the inner cylinder so as to cover an ...