Inventor · disambiguated record
Yifei Qian
Also filed as: QIAN YIFEI
9 granted patents·1 pending application·28 citations·filing 2003–2023
82Inventor score
Files withSHANGHAI HUALI MICROELECT CORP3ANDOL TECH INC2FURUKAWA ELECTRIC NORTH AM INC2SHANGHAI HUALI INTEGRATED CIRCUIT CORP2
Top patents by PatentIndex Score
10 records- 0194US10877501B1Power supply powering-on structureSHANGHAI HUALI MICROELECT CORP·Filed 2020·Granted Dec 29, 2020·5 cites·15 claims
- 0283US11841723B2Distributed LDO structure without external capacitorSHANGHAI HUALI INTEGRATED CIRCUIT CORP·Filed 2022·Granted Dec 12, 2023·1 cites·8 claims
- 0380US6952517B2Method for the manufacture of optical fibers, improved optical fibers, and improved raman fiber amplifier communication systemsFURUKAWA ELECTRIC NORTH AM INC·Filed 2003·Granted Oct 4, 2005·11 cites·11 claims
- 0468US6904217B2Method for the manufacture of optical fibers, improved optical fibers, and improved Raman fiber amplifier communication systemsFURUKAWA ELECTRIC NORTH AM INC·Filed 2003·Granted Jun 7, 2005·10 cites·8 claims
- 0556US9513496B2Optical fiber rotary squeezer polarization controllerANDOL TECH INC·Filed 2014·Granted Dec 6, 2016·1 cites·7 claims
- 0654US12340854B2Multilevel voltage detector circuitSHANGHAI HUALI INTEGRATED CIRCUIT CORP·Filed 2023·Granted Jun 24, 2025·0 cites·10 claims
- 0753US2005168803A1Raman fiber amplifier communication systemsFiled 2005·Application pending·0 cites
- 0846US12273102B2System for turning off power consumption of auxiliary startup circuitSHANGHAI HUALI MICROELECT CORP·Filed 2023·Granted Apr 8, 2025·0 cites·6 claims
- 0945US12212319B2Power-on-reset circuitSHANGHAI HUALI MICROELECT CORP·Filed 2023·Granted Jan 28, 2025·0 cites·10 claims
- 1042US9939294B2Demodulation system for 3D-matrix multi-channel fiber optic sensingANDOL TECH INC·Filed 2014·Granted Apr 10, 2018·0 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →