ALEXANDRIA, Va., April 7 -- United States Patent no. 12,598,409, issued on April 7, was assigned to Listening Wisdom (Nanjing) Technology Co. Ltd. (Nanjing City, China).
"In-ear wearable device" was invented by Chunhong Yu (Nanjing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure relates to an in-ear wearable device, including: a customized housing having a housing wall and an inner cavity; a panel; a ventilation hole at least partially disposed in the customized housing and partially formed in the housing wall; and a ventilation rate adjusting device mounted in the ventilation hole. When in use, the customized housing includes a first portion inserted into a user's acoustic meatus, and a...