Learn more

XIAN SITAN INSTRUMENTS CO LTD

Overview
  • Total Patents
    18
  • GoodIP Patent Rank
    101,223
  • Filing trend
    ⇩ 100.0%
About

XIAN SITAN INSTRUMENTS CO LTD has a total of 18 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 2009. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, measurement and electrical machinery and energy are SANVEAN TECH LLC, SICHUAN SCIENCE CITY JIULI ELECTRONICS CO LTD and LOVELL JOHN R.

Patent filings in countries

World map showing XIAN SITAN INSTRUMENTS CO LTDs patent filings in countries
# Country Total Patents
#1 China 18

Patent filings per year

Chart showing XIAN SITAN INSTRUMENTS CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Niu Xiaoying 4
#2 Niu Yunpeng 4
#3 Li Jinhua 4
#4 Li Xiaodong 4
#5 Wei Yuping 3
#6 Sun Xiaofei 3
#7 Kang Xuexi 3
#8 Zhang Kai 3
#9 Wang Zhenhua 3
#10 Li Changjiang 2

Latest patents

Publication Filing date Title
CN111364984A High-temperature-resistant constant-power dual laterolog instrument
CN111366613A Working frequency signal processing circuit of petroleum formation resistivity measuring instrument
CN110847866A Intelligent plunger system
CN110924890A Rechargeable wellhead device and plunger gas lift drainage gas production system
CN110501045A A kind of flow measurement device and method in variable cross section channel
CN110242281A A kind of oil well intelligent calibration self checking method and device
CN110273676A A kind of hole diameter flow adjustment test macro and method
CN110318720A A kind of wide range orifice flowmeter injection well downhole flow regulator
CN110306973A It is a kind of to cross drill bit logging instrument end radio transmitting device and method
CN110219640A A kind of well calibration self-detecting instrument and calibration method
CN110185411A A kind of horizontal well closure test macro
CN110043215A A kind of electronic plugging device of horizontal well
CN110043245A A kind of integrated noise logging tool of direct-reading storage
CN109555507A A kind of adjustable concentric roater regulator of constant current
CN109538196A It is a kind of suitable for eccentric injection mandrel test envelope measurement and adjustment instrument and test envelope measurement and adjustment instrument method
CN107503720A A kind of device and method for regulating and controlling seperated layer water injection using flow waves
CN107313764A Cable-free type producing well regulating multi-zone production rate device and method
CN101749013A Method for measuring electrical resistivity of earth layer around oil well through sleeve pipe