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QINGDAO HISENSE HITACHI AIR CONDITIONING SYS CO LTD

Overview
  • Total Patents
    44
  • GoodIP Patent Rank
    42,591
  • Filing trend
    ⇧ 100.0%
About

QINGDAO HISENSE HITACHI AIR CONDITIONING SYS CO LTD has a total of 44 patent applications. It increased the IP activity by 100.0%. Its first patent ever was published in 2011. It filed its patents most often in WIPO (World Intellectual Property Organization), United States and EPO (European Patent Office). Its main competitors in its focus markets thermal processes, environmental technology and control are ZHEJIANG KING CO LTD, GUANGDONG EUROKLIMAT AIR COND and NANJING TICA AIR CONDITIONING CO LTD.

Patent filings in countries

World map showing QINGDAO HISENSE HITACHI AIR CONDITIONING SYS CO LTDs patent filings in countries
# Country Total Patents
#1 WIPO (World Intellectual Property Organization) 30
#2 United States 7
#3 EPO (European Patent Office) 6
#4 China 1

Patent filings per year

Chart showing QINGDAO HISENSE HITACHI AIR CONDITIONING SYS CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zhang Wenqiang 14
#2 Liu Min 14
#3 Li Yajun 14
#4 Cao Rui 9
#5 He Chengjun 7
#6 Wang Yuanpeng 6
#7 Du Minglong 5
#8 Cao Peichun 5
#9 Li Yongmei 5
#10 Deng Yuping 5

Latest patents

Publication Filing date Title
WO2021018314A1 Co2 heat pump system and defrosting control method therefor
WO2021077802A1 Integrated air source heat pump
WO2021068327A1 Air conditioner outdoor unit and control method
WO2020052234A1 Compressor oil return control method and apparatus
WO2019020125A1 Outdoor unit for air conditioner, air conditioner, and air conditioning system
US2015059392A1 Multi-type air conditioner system
CN102331071A Anti-voltage fluctuation automatic static pressure recognition method and system for air pipe type air conditioning indoor unit