Inventor · disambiguated record
Chien-Feng Cheng
Also filed as: CHENG CHIEN-FENG
2 granted patents·3 pending applications·123 citations·filing 1989–2020
59Inventor score
Top patents by PatentIndex Score
5 records- 0192US5247655ASleep mode refresh apparatusCHIPS & TECH INC·Filed 1989·Granted Sep 21, 1993·123 cites·13 claims
- 0251US2021401079A1Novel airtight protective maskMOTEX HEALTHCARE CORP·Filed 2019·Application pending·0 cites
- 0347US2022134138A1Multifunctional protective mask with sucking and whistlingMOTEX HEALTHCARE CORP·Filed 2020·Application pending·0 cites
- 0442US10881819B2First-aid mask and inflatable structure thereofCENTER HEALTHCARE TECH CO LTD·Filed 2016·Granted Jan 5, 2021·0 cites·11 claims
- 0542US2019174845A1Protective mask with embedded nose padCENTER HEALTHCARE TECH CO LTD·Filed 2017·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Chien-Feng Cheng files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →