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CN PETROLEUM ENG CO LTD

Overview
  • Total Patents
    129
  • GoodIP Patent Rank
    27,248
  • Filing trend
    ⇩ 100.0%
About

CN PETROLEUM ENG CO LTD has a total of 129 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 2007. It filed its patents most often in China. Its main competitors in its focus markets environmental technology, chemical engineering and basic materials chemistry are CHENGDU SEPMEM SCIENCE & TECH CO LTD, SUSTAINABLE ENERGY SOLUTIONS LLC and BARBET & FILS & CIE E.

Patent filings in countries

World map showing CN PETROLEUM ENG CO LTDs patent filings in countries
# Country Total Patents
#1 China 129

Patent filings per year

Chart showing CN PETROLEUM ENG CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Guo Chenghua 29
#2 Liu Jiahong 28
#3 Chen Yunqiang 26
#4 Tang Xiaoyong 22
#5 Pu Liming 21
#6 Lu Yongkang 19
#7 Tang Zhiyun 17
#8 Xian Xiangfa 16
#9 Chen Zhangbing 15
#10 Ma Xian 15

Latest patents

Publication Filing date Title
CN110947280A System and method for purifying carbon dioxide acid gas containing impurities
CN111025901A Pipeline cleaning period prediction method and platform
CN107381760A Desulfurizing agent for oil gas field sewage disposal and preparation method thereof, sulfur method
CN107376615A A kind of highly efficiency compositional desulfurization and decarburization solvent and its application
CN107019996A The absorbent of cyclic absorption natural gas sulfur dioxide in tail gas gas and its application
CN107081052A Acid gas absorbent and application containing double (3 aminopropyl) polyethylene glycol
CN107098788A A kind of device and method that ethane carbon dioxide removal is reclaimed in pipe natural gas
CN107163975A The device and method that a kind of lighter hydrocarbons depth is reclaimed
CN106831300A A kind of apparatus and method of ethane recovery co-production of liquefied natural gas
CN106866339A The device and method of ethane coproduction raw helium is reclaimed in a kind of natural gas
CN106642990A Recovery device and method for washing hydrocarbon to extract helium in natural gas
CN106523854A Corrosion inhibitor single-ball pre-filming system and method of remote large-diameter gas collection pipeline
CN106802274A Assay method of the corrosion inhibiter to Oil/Gas Pipe weld corrosion control effect
CN106679740A Cavity wall gushing water collector and application
CN106398055A Novel insulated sealing material for insulated joint and preparation method of novel insulated sealing material
CN106287213A A kind of coastal waters offshore LNG receives system and method
CN106121494A The burglary-resisting window being easy to high and medium escape and the method utilizing burglary-resisting window to carry out escaping
CN106010637A Condensate oil desulphurization stabilizing apparatus and method thereof
CN105857987A Flexible anti-seepage device for gasoline station
CN105910387A Process device and process method for recovering cold energy from LNG prepared from coke oven gas