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Inventor

LIU QINGQUAN

CN12 patents
⚠️ This page may combine multiple inventors who share the name “LIU QINGQUAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SHENZHEN ALEX TECH CO LTD

4 patents
USD912644SMar 9, 2021

Open-ear headphones

SHENZHEN ALEX TECH CO LTD48 citations95
USD1009249SDec 26, 2023

Ear washer

SHENZHEN ALEX TECH CO LTD9 citations83
US11826534B2Nov 28, 2023

Ear, nose, and throat irrigator

SHENZHEN ALEX TECH CO LTD2 citations70
US11076218B2Jul 27, 2021

Horn assembly and dual-listening bluetooth headset

SHENZHEN ALEX TECH CO LTD1 citations60

SHENZHEN INTELLIGENT DOCTOR TECH CO LTD

2 patents
USD1024330SApr 23, 2024

Ear wax removal tool

SHENZHEN INTELLIGENT DOCTOR TECH CO LTD7 citations82
USD1024329SApr 23, 2024

Ear wax removal tool

SHENZHEN INTELLIGENT DOCTOR TECH CO LTD3 citations71

LIU QINGQUAN

2 patents
US8725115B2May 13, 2014

Method and system for processing message

LIU QINGQUAN17 citations80
USD1063140SFeb 18, 2025

Light

LIU QINGQUAN1 citations60

UNIV HUNAN SCIENCE & TECHNOLOGY

2 patents
US11015294B2May 25, 2021

Method for preparing titanium dioxide-based synthetic paper

UNIV HUNAN SCIENCE & TECHNOLOGY0 citations48
US10988898B2Apr 27, 2021

Method for preparing active carbon-based special synthetic paper

UNIV HUNAN SCIENCE & TECHNOLOGY0 citations48

GAO SHOUYONG

1 patent
US8876582B2Nov 4, 2014

Ventilation device

GAO SHOUYONG15 citations77

SHANGHAI INST TECH PHYSICS CAS

1 patent
US12527105B2Jan 13, 2026

Short-wave infrared spectrum detector and preparation method thereof

SHANGHAI INST TECH PHYSICS CAS0 citations59