Jiujian Liu

AC Aac Microtech (Changzhou) Co.: 1 patents #93 of 162Top 60%

AC Aac Technologies (Nanjing) Co.: 1 patents #20 of 48Top 45%

AP Aac Technologies Pte.: 1 patents #231 of 401Top 60%

📍 Lo Wu, CN: #2,395 of 7,906 inventorsTop 35%

Overall (All Time): #1,319,754 of 4,157,543Top 35%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
12267658	Multifunctional sounding device	Yao Hui	2025-04-01
12238474	Speaker box	Yao Hui, Yufen Chu, Weimin Chen	2025-02-25
11765513	Dual magnetic circuits structure and sound device	—	2023-09-19