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SHANGHAI ZHONGMENG PETROLEUM AND NATURAL GAS CO LTD

Overview
  • Total Patents
    15
  • GoodIP Patent Rank
    162,504
About

SHANGHAI ZHONGMENG PETROLEUM AND NATURAL GAS CO LTD has a total of 15 patent applications. Its first patent ever was published in 2010. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, machine tools and machines are VALLOUREC DRILLING PRODUCTS FRANCE, GURTLER HEBERT & CO INC and OYO KOGAKU KENKYUSHO.

Patent filings in countries

World map showing SHANGHAI ZHONGMENG PETROLEUM AND NATURAL GAS CO LTDs patent filings in countries
# Country Total Patents
#1 China 15

Patent filings per year

Chart showing SHANGHAI ZHONGMENG PETROLEUM AND NATURAL GAS CO LTDs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Zhang Min 11
#2 Zhang Linxue 10
#3 Wang Dongping 10
#4 Zhen Li 2
#5 He Yingzi 2
#6 Li Peng 1
#7 Huiping Zhang 1
#8 Yingzi He 1
#9 Zheng Yanhai 1
#10 Dongheng He 1

Latest patents

Publication Filing date Title
CN109881140A The spraying method of PDC steel body bit surface hard alloy
CN109881139A The preprocess method of PDC steel body bit surface coated with hard alloy
CN109986694A Make the distribution of PDC drill bit ceramic mold
CN109879659A The production method for being sintered PDC drill bit ceramic mold
CN109878006A The production method for manufacturing PDC drill bit rubber mold
CN110355434A PDC drill bit composite sheet cutting tooth welding-on method
CN110355490A Preprocess method before PDC drill bit composite sheet cutting tooth welding-on
CN110344782A Drill bit mills cylinder
CN110306933A Monoblock type PDC drill bit
CN110306944A PDC drill bit shackle protector
CN103273263A Method for manufacturing energy-saving composite nozzle of diamond drill bit
CN103045985A Surface strengthening and protection process for steel-body PDC drill bit
CN101983830A Method for manufacturing fishing socket of female coupling tap
CN101870527A Treatment method for preventing drilling fluid from polluting the environment
CN101793124A Bit drilling engineering method