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HYDROGEOLOGY BUREAU CHINA NAT ADMINISTRATION COAL GEOLOGY

Overview
  • Total Patents
    37
  • GoodIP Patent Rank
    41,820
  • Filing trend
    ⇩ 90.0%
About

HYDROGEOLOGY BUREAU CHINA NAT ADMINISTRATION COAL GEOLOGY has a total of 37 patent applications. It decreased the IP activity by 90.0%. 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 environmental technology are SUBSURFACE TECHNOLOGIES INC, SHAANXI AEROSPACE DELIN SCIENCE AND TECH GROUP CO LTD and STONE & WEBSTER ENG LTD.

Patent filings in countries

World map showing HYDROGEOLOGY BUREAU CHINA NAT ADMINISTRATION COAL GEOLOGYs patent filings in countries
# Country Total Patents
#1 China 37

Patent filings per year

Chart showing HYDROGEOLOGY BUREAU CHINA NAT ADMINISTRATION COAL GEOLOGYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Fang Xiangqing 9
#2 Shen Zhihui 6
#3 Jiang Xiangming 5
#4 Li Xibin 5
#5 Lin Guohua 5
#6 Wu Tiewei 5
#7 Ren Hujun 4
#8 Xu Chao 3
#9 Wang Yongquan 3
#10 Lu Rongmao 2

Latest patents

Publication Filing date Title
CN112253227A Underground cavity plugging device and construction method thereof
CN112253122A Method for preventing coal bed oxidation in highlands frozen soil area opencast coal mine side area
CN112282839A Hole device in pit of shutoff for drilling
CN112252984A Construction method for large-aperture drilling
CN112252597A Dust fall roof device and have its grit material dustproof shed of material loading
CN111057525A Mud liquid suitable for seabed sediment sludge stratum and preparation method thereof
CN110469293A A kind of mine EXIT POINT plugging technology
CN110386780A A kind of well cementing material of mid-deep strata geothermal well and preparation method thereof and geothermal well
CN110376652A A kind of electromagnetic survey equipment for the acquisition of horizontal branch hole interior orientation data
CN110005370A Control absciss layer injecting paste material of subsidence and preparation method thereof and grouting method
CN109779529A A kind of geothermal well drill construction technique and geothermal well
CN109678420A A kind of well cementing material and geothermal well of middle layer geothermal well
CN109721303A A kind of well cementing material and geothermal well of mid-deep strata geothermal well
CN109377042A A kind of roof Spray water way evaluation method
CN108485619A A kind of hot dry rock drilling high temperature resistant drilling fluids and preparation method thereof
CN108049815A A kind of central tube down tube technique in Vertical Well
CN107839985A A kind of sylvite rock core storage bag
CN107938693A A kind of base pit engineering waterproof curtain construction method
CN107987817A One kind is in limestone formation horizontal well construction flushing liquor
CN107892435A Discarded small-size coal mine mine well head sewage combined treating method