Inventor

LI YUANFENG

CN6 patents

⚠️ This page may combine multiple inventors who share the name “LI YUANFENG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HUAWEI TECH CO LTD

2 patents

US12120772B2Oct 15, 2024

Network access card switching method and electronic device

HUAWEI TECH CO LTD0 citations50

US12501268B2Dec 16, 2025

Method and apparatus for verifying personal identification number pin code

HUAWEI TECH CO LTD0 citations43

UNIV PENNSYLVANIA

1 patent

US6026691AFeb 22, 2000

Methods and devices for electrochemically determining metal fatigue status

UNIV PENNSYLVANIA36 citations87

(unassigned)

1 patent

US5419201AMay 30, 1995

Methods and devices for electrochemically determining metal fatigue status

25 citations85

ZHEJIANG INNUOVO NEW ENERGY TECH CO LTD

1 patent

US10453628B2Oct 22, 2019

Opposite arc isolation device of high voltage direct current relay

ZHEJIANG INNUOVO NEW ENERGY TECH CO LTD1 citations56

UNIV NORTHEAST AGRICULTURAL

1 patent

US11207719B2Dec 28, 2021

Device and method for remedying heavy-metal-polluted soil with microorganism

UNIV NORTHEAST AGRICULTURAL0 citations43