ALEXANDRIA, Va., Sept. 30 -- United States Patent no. D1,150,018, issued on Sept. 29, was assigned to Audio-Technica Corp. (Tokyo).
"Headphone" was invented by Shan Yung Yen (Tokyo).
The patent was filed on May 8, 2025, under Application No. D/002,780.
*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=D1150018&OS=D1150018&RS=D1150018
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