QZ

Qichang Zheng

📍 Shaoyang City, CN: #21 of 75 inventorsTop 30%
Overall (All Time): #1,705,544 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12268820 Non-hysteretic oxygen supply respirator system Zhe Liu, Lei Zhou, Congneng Tang, Jinping Su, Zaixin Yuan 2025-04-08
11493051 Noise reduction method of a ventilator Zhe Liu, Lei Zhou, Jinping Su 2022-11-08