Learn more

ZHEJIANG DUNAN MACHINERY CO LTD

Overview
  • Total Patents
    72
  • GoodIP Patent Rank
    27,964
  • Filing trend
    ⇩ 50.0%
About

ZHEJIANG DUNAN MACHINERY CO LTD has a total of 72 patent applications. It decreased the IP activity by 50.0%. Its first patent ever was published in 2009. It filed its patents most often in China and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets mechanical elements, thermal processes and environmental technology are ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD, ZHEJIANG DUNAN HETIAN METAL CO and ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP CO LTD.

Patent filings in countries

World map showing ZHEJIANG DUNAN MACHINERY CO LTDs patent filings in countries

Patent filings per year

Chart showing ZHEJIANG DUNAN MACHINERY CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Wang Dingjun 23
#2 Tian Peng 11
#3 Hu Yugang 8
#4 Li Weizao 7
#5 Zhu Fangying 7
#6 Shan Yukuan 5
#7 Zeng Qingjun 5
#8 Wang Feng 4
#9 Xu Gan 4
#10 Zhu Longjian 4

Latest patents

Publication Filing date Title
CN111121350A Gas-liquid separator and air conditioning system
CN112240302A Compressor
WO2019154342A1 Electronic expansion valve
CN109272979A Muffler and preparation method thereof
CN110307375A A kind of solenoid valve and air-conditioning system
CN110307376A A kind of solenoid valve and air-conditioning system
CN110242778A A kind of bidirectional throttling valve
CN110220324A Four-way valve and air-conditioning system
CN110131914A Four-way valve and air-conditioning system
CN110094901A A kind of micro-channel heat exchanger
CN110094546A Four-way valve and air-conditioning system
CN110094547A A kind of large capacity reversal valve
CN110044109A A kind of gas-liquid separator
CN110030409A A kind of check valve
CN110030423A A kind of welding structure and solenoid valve of conduit and plug component
CN109990627A A kind of snakelike flat pipe heat exchanger of multilayer and its processing technology
CN109958775A A kind of electric expansion valve
CN109958774A A kind of electric expansion valve
CN109945726A Inserted sheet fin and heat exchanger
CN109900026A Gas-liquid separator