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WANG CHENGJUN

Overview
  • Total Patents
    14
  • GoodIP Patent Rank
    155,761
About

WANG CHENGJUN has a total of 14 patent applications. Its first patent ever was published in 1997. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, environmental technology and engines, pumps and turbines are DES ENHANCED RECOVERY LTD, WUXI SEAMLESS OIL PIPE CO LTD and TIGRE TIERRA.

Patent filings in countries

World map showing WANG CHENGJUNs patent filings in countries
# Country Total Patents
#1 China 14

Patent filings per year

Chart showing WANG CHENGJUNs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Wang Chengjun 14

Latest patents

Publication Filing date Title
CN111058804A Beam-pumping unit accessory
CN111101873A Oil pumping pipe centralizer for oil field
CN111101906A Sand control screen pipe for oil extraction
CN111219163A Bridge plug for oil field
CN111206900A Bidirectional anchoring packer for oil field
CN109914064A More barrels of rotary drum washing machines
CN109882112A A kind of expansion self-sealing packer
CN109973049A A kind of bridge plug for producing well
CN109822784A A kind of shuttlecock mould structure of manufacture one
CN105250871A Traditional Chinese medicine composition for treating stomach illness and preparing method thereof
CN105250364A Skin tinea treating composition for external use and preparing method thereof
CN103516262A Rotor current recycling feedback device for slip-ring wound rotor motor
CN1186292A Coordinate sequential method for house numbers and structure of number plate
CN1205380A Operating method of tool for removing road dirt of chewing gum