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SHANDONG LONGERTEK TECH CO LTD

Overview
  • Total Patents
    18
  • GoodIP Patent Rank
    91,961
  • Filing trend
    ⇧ 20.0%
About

SHANDONG LONGERTEK TECH CO LTD has a total of 18 patent applications. It increased the IP activity by 20.0%. Its first patent ever was published in 2017. It filed its patents most often in China. Its main competitors in its focus markets transport, electrical machinery and energy and environmental technology are TEMPERATURE LTD, CARRIER CO LTD and SHENHZEN WOHAISEN TECH CO LTD.

Patent filings in countries

World map showing SHANDONG LONGERTEK TECH CO LTDs patent filings in countries
# Country Total Patents
#1 China 18

Patent filings per year

Chart showing SHANDONG LONGERTEK TECH CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Xu Bingbing 5
#2 Xin Wei 5
#3 Liu Meitang 5
#4 Shi Changkui 5
#5 Zhang Yongli 4
#6 Guan Qingyu 3
#7 Gao Fuxue 3
#8 Li Jing'En 3
#9 Su Yong 2
#10 Li Yukui 2

Latest patents

Publication Filing date Title
CN111981177A Electronic expansion valve and refrigerating system
CN111846188A Container energy storage variable frequency air conditioning unit for direct current supply ship
CN112009511A Air conditioner exhaust system for railway vehicle and control method
CN111845821A Air conditioner and dehumidification method
CN110979367A Control method of condensing fan of air conditioning unit
CN109606112A A kind of rail traffic vehicles indoor air supply system
CN109659905A A kind of IPM overcurrent and thermal-shutdown circuit
CN109263671A A kind of dehumidification control method of vehicle convertible frequency air-conditioner
CN109100011A A kind of railway air conditioner vibration monitoring and fault diagnosis system and diagnostic method
CN108759033A A kind of control method of air-conditioner set condensation fan
CN110611417A Integrated power supply box and railway vehicle air conditioner applying same
CN110311658A A kind of pulse generating circuit
CN108387031A A kind of heat pump system and control method
CN109756118A A kind of double-ended power translation circuit
CN107791783A A kind of new energy electric motor vehicle heat management system and thermal management algorithm
CN107799850A A kind of battery air-conditioning system
CN109100085A A kind of pressure wave detection device test tool and test method
CN108880236A The Boost circuit and suppressing method of surge in a kind of inhibition