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SHANXI LANYAN COALBED METHANE GROUP CO LTD

Overview
  • Total Patents
    18
  • GoodIP Patent Rank
    93,039
About

SHANXI LANYAN COALBED METHANE GROUP CO LTD has a total of 18 patent applications. Its first patent ever was published in 2014. It filed its patents most often in China. Its main competitors in its focus markets civil engineering are TELEJET TECHNOLOGIES INC, MCLEOD RODERICK D and RD TRENCHLESS LTD OY.

Patent filings in countries

World map showing SHANXI LANYAN COALBED METHANE GROUP CO LTDs patent filings in countries
# Country Total Patents
#1 China 18

Patent filings per year

Chart showing SHANXI LANYAN COALBED METHANE GROUP CO LTDs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering

Focus technologies

# Technology
#1 Earth drilling

Top inventors

# Name Total Patents
#1 Zhao Xiaoshan 9
#2 Wang Jun 7
#3 Wang Xinbin 5
#4 Wang Zheng 5
#5 Tian Yongdong 5
#6 Wang Baoyu 4
#7 Hao Chunsheng 4
#8 Yu Zhenfeng 4
#9 Zhao Xiaolong 4
#10 Bai Jianping 4

Latest patents

Publication Filing date Title
CN111140205A Method for preventing coal bed gas pre-pumping well from being damaged along with recovery
CN111021959A Well drilling method for preventing water accumulation in goaf
CN110965965A Method for developing underlying coal reservoir by utilizing coalbed methane depletion well
CN111075419A Squeezing permeability-increasing blockage removing process for low-yield coal bed gas vertical well
CN110863801A Method for changing coalbed methane pre-pumping well into mining well
CN110566191A Method for detecting casing loss in coal-bed gas well
CN110173236A A kind of goaf coal bed gas well pumping method
CN104863562A Broken and soft low-permeability coal bed horizontal well staged fracturing technology
CN104863537A Intermediate casing recovering and connecting device passing through mined-out region and recovery process
CN104895531A Single thick coal seam ground mining well extraction process
CN104963714A Standing air shaft safe coal-uncovering technology of high gassy mine
CN104832089A Efficient coal dust flow-back process for use in radial well construction
CN104929567A Low-cost construction process for passing through goaf
CN104863508A Lower-pressure jetting reversed-drawing pore-forming technology in radial direction well construction
CN104481468A Coal bed gas well open hole well completion technology
CN104141467A Tool special for fishing combination operation on tail pipe in coal-bed gas well and operation process by using tool
CN104234682A Coiled tubing separate-layer fracturing method suitable for multiple thin coal seams
CN104005766A Chemical method for weakening of top coal