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XI AN TONGYUAN PETROTECH CO LT

Overview
  • Total Patents
    11
About

XI AN TONGYUAN PETROTECH CO LT has a total of 11 patent applications. Its first patent ever was published in 2002. It filed its patents most often in WIPO (World Intellectual Property Organization), China and Canada. Its main competitors in its focus markets civil engineering and machines are INTERWELL P&A AS, OWEN OIL TOOLS INC and MYRON ZANDMER SOLIS.

Patent filings in countries

World map showing XI AN TONGYUAN PETROTECH CO LTs patent filings in countries

Patent filings per year

Chart showing XI AN TONGYUAN PETROTECH CO LTs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

Top inventors

# Name Total Patents
#1 Zhang Xi 3
#2 Zhang Guoan 3
#3 Guoan Zhang 3
#4 Zhang Tinghan 3
#5 Jianlong Cheng 2
#6 Zhou Zhihua 2
#7 Li Gangqiang 2
#8 Li Gangqiang Zhou 1
#9 Liu Jun 1
#10 Xin Yuan 1

Latest patents

Publication Filing date Title
WO2008067771A1 Balance weight device of perforator for horizontal oilwell
WO2008067772A1 Buffer unit for perforation testing system of oil/gas well
CN101220738A Portable sand-prevention perforating tool capable of effectively locating sand prevention material
CN1970989A Throwing type high energy gas fracturing device
CN1970992A Dynamic test device for composite perforator
WO2007031001A1 Compound perforator without body
WO2006045248A1 A high-energy gas fracture tool for through-tubing operation
CN1603575A Oil-gas well perforator interlayer gun
US6991044B2 High-energy combined well perforating device