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CHINA COAL HANDAN DESIGN ENG CO LTD

Overview
  • Total Patents
    12
  • GoodIP Patent Rank
    137,402
  • Filing trend
    ⇧ 150.0%
About

CHINA COAL HANDAN DESIGN ENG CO LTD has a total of 12 patent applications. It increased the IP activity by 150.0%. Its first patent ever was published in 2016. It filed its patents most often in China. Its main competitors in its focus markets packaging and shipping, civil engineering and chemical engineering are MINING ENGINEERING COMPANY MEC, MINING ENGINEERING CO LTD and NEPEAN CONVEYORS PTY LTD.

Patent filings in countries

World map showing CHINA COAL HANDAN DESIGN ENG CO LTDs patent filings in countries
# Country Total Patents
#1 China 12

Patent filings per year

Chart showing CHINA COAL HANDAN DESIGN ENG CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Lian Cuncai 4
#2 Zhi Baoyan 4
#3 Wang Xudong 4
#4 Song Gang 4
#5 Liu Jingchuan 3
#6 Zhang Ju 3
#7 Song Jing 3
#8 Li Dechun 3
#9 Li Yankun 3
#10 Zhao Shuning 3

Latest patents

Publication Filing date Title
CN110025997A A kind of sieve bend turnover device
CN110005455A Quickly move back anchor anchorage
CN109205191A A kind of damping deceleration device
CN108661690A A kind of mine goaf fire extinguishing method
CN108820787A Impeller-type flapper device
CN108661713A A kind of vertical ventilating shaft explosion-proof door inverted ventilation locking device
CN108820786A Without drop material receiving device
CN107381112A Automobile loading system
CN106960538A A kind of goaf fire alarm temperature sensing optical fiber laying structure device
CN105600273A Self-open type block coal conveying spiral chute
CN105668134A Insulated corridor type conveyer machine
CN105621021A Trestle support