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LIU YAJUAN

Overview
  • Total Patents
    13
  • GoodIP Patent Rank
    166,036
About

LIU YAJUAN has a total of 13 patent applications. Its first patent ever was published in 1998. It filed its patents most often in China. Its main competitors in its focus markets mechanical elements, measurement and machine tools are KOKUSAN RASENKAN CO LTD, WEI HONGFEI and EWE WILHELM GMBH & CO KG.

Patent filings in countries

World map showing LIU YAJUANs patent filings in countries
# Country Total Patents
#1 China 13

Patent filings per year

Chart showing LIU YAJUANs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Liu Yajuan 11
#2 Dong Jinxiao 2
#3 Du Zhiyuan 2
#4 Wang Shurong 2
#5 Zhu Jianda 1
#6 Lai Zhongquan 1

Latest patents

Publication Filing date Title
CN111122254A Laboratory water sample sampling device for environmental monitoring
CN111022844A Visual snapshot ecological environment monitor
CN107432529A A kind of box and pin
CN107398875A A kind of movable material Turnover Box
CN106594441A Right-angle rotary joint
CN106594429A Straight rotary joint
CN106594440A Right-angled direction-adjustable joint
CN106594430A Hydraulic right-angled rotating connector
CN106594334A In-line check valve
CN106567973A High-pressure straight-through rotating joint
CN103463268A Drug for treating acute injury pains
CN103463604A Drug for treating cough and asthma
CN1226657A Method for loosing coal layers for smokeless counterfire coal furnace