Inventor · disambiguated record
Qichang Zheng
Also filed as: ZHENG QICHANG
2 granted patents·1 pending application·0 citations·filing 2021–2022
21Inventor score
Files withHUNAN VENTMED MEDICAL TECH CO LTD3
Top patents by PatentIndex Score
3 records- 0139US12268820B2Non-hysteretic oxygen supply respirator systemHUNAN VENTMED MEDICAL TECH CO LTD·Filed 2022·Granted Apr 8, 2025·0 cites·7 claims
- 0237US11493051B2Noise reduction method of a ventilatorHUNAN VENTMED MEDICAL TECH CO LTD·Filed 2021·Granted Nov 8, 2022·0 cites·6 claims
- 0328US2022142601A1Flexible patch for respiratory sound monitoringHUNAN VENTMED MEDICAL TECH CO LTD·Filed 2021·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →