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XIAN CHANGQING TECH ENGINEERING CO LTD

Overview
  • Total Patents
    164
  • GoodIP Patent Rank
    8,838
  • Filing trend
    ⇧ 70.0%
About

XIAN CHANGQING TECH ENGINEERING CO LTD has a total of 164 patent applications. It increased the IP activity by 70.0%. Its first patent ever was published in 2017. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, basic materials chemistry and mechanical elements are XI'AN CHANGQING TECH ENG CO LTD, OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOSTYU GAZPROM DOBYCHA URENGOJ and TEXAS EASTERN ENG LTD.

Patent filings in countries

World map showing XIAN CHANGQING TECH ENGINEERING CO LTDs patent filings in countries
# Country Total Patents
#1 China 164

Patent filings per year

Chart showing XIAN CHANGQING TECH ENGINEERING CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Wang Denghai 31
#2 Xue Gang 25
#3 Yang Guang 23
#4 Liu Yinchun 23
#5 Zheng Xin 22
#6 He Jun 17
#7 Guo Yahong 17
#8 Hu Jianguo 17
#9 Ge Tao 15
#10 Wang Hui 13

Latest patents

Publication Filing date Title
CN112228767A Shallow cooling process LNG recovery system and recovery method
CN112145091A Protective anti-corrosion wax-proof coating and method for reducing abrasion of oil production pipe
CN112175686A Adsorption and regeneration system and method for natural gas molecular sieve dehydration tower
CN112283942A Detachable heating coil structure, heating furnace and disassembling and replacing method
CN112145981A Natural gas conveying pipeline monitoring system and using method
CN112196178A Box plate structure fast-assembly wall and construction method
CN112228312A Prying belt type noise reduction and sound insulation cover of natural gas compressor and mounting method
CN112125432A Oil field clean water treatment, chemical adding and regeneration integrated machine and method
CN112126484A Natural gas desulfurization absorption tower and desulfurization method
CN112228772A Module structure for pressurizing gas field pressurizing station
CN112065356A Separator-based small-differential-pressure large-liquid-volume liquid drainage system and method
CN112096364A Module structure of gas field booster station separator and separation method
CN112145743A Multi-channel pipeline control column valve
CN112145748A Single-flow column valve
CN111948067A Device for measuring curvature radius of elastic laying of pipeline and using method
CN111853348A Pipeline interpolation method for improving liquid carrying capacity of low-lying part of gas collecting pipeline
CN111928118A Gas collecting station dual-pressure system and gas collecting method thereof
CN111946928A Fuel type heat tracing band, heat tracing system and use method
CN112066159A RTP pipeline joint thrust block structure and using method
CN111974772A Automatic throwing device, system and method for lead screw pushing type paraffin removal ball