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BEIJING LONGSHINE OIL TUBULAR TECHNOLOGY CO LTD

Overview
  • Total Patents
    20
  • GoodIP Patent Rank
    152,841
About

BEIJING LONGSHINE OIL TUBULAR TECHNOLOGY CO LTD has a total of 20 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 machine tools, measurement and surface technology and coating are YUNNAN KUNGANG NEW COMPOSITE MATERIALS DEV CO LTD, WOEGERBAUER ALFRED and HARDWICK ROY.

Patent filings in countries

World map showing BEIJING LONGSHINE OIL TUBULAR TECHNOLOGY CO LTDs patent filings in countries
# Country Total Patents
#1 China 20

Patent filings per year

Chart showing BEIJING LONGSHINE OIL TUBULAR TECHNOLOGY CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Li Jike 13
#2 Yang Zhuanzhao 11
#3 Nie Xianghui 10
#4 Wang Gaofeng 10
#5 Wang Chang An 9
#6 Wu Jinhui 8
#7 Yang Hongbing 7
#8 Zhao Xinwei 6
#9 Li Anqiang 6
#10 Wang Yaoguang 5

Latest patents

Publication Filing date Title
CN105260950A Failure control method for oil and gas pipelines
CN105181490A Method for judging plasticity index of material in rapid deformation process through drop-weight tear test (DWTT)
CN104897471A Distribution structure of sensors on steel pipe and static hydraulic bursting test method adopting distribution structure
CN104180783A Tool scale for measuring flat block or protrusion of welded tube and measuring method for using tool scale
CN103978299A Process for production of double-metal metallurgical composite tube through high frequency resistance welding method and composite tube
CN103983523A Full-size four-point bending test device and method for steel tube with additionally applied axial load
CN103983696A Water column coupling monitoring device for automatic ultrasonic detection for steel tube welding joint and design method of device
CN103978292A Duplex-metal metallurgical composite pipe finished through quadruple welding and process method thereof
CN103995971A Method for comprehensively evaluating pipe manufacturing capacity of oil and gas conveying pipe factory
CN103954256A Method for detecting scissors difference of two cranks of pumping unit
CN103753030A Method for producing clad pipes from metal plates by superposition and mechanical lamination
CN103624383A Welding seam weld reinforcement control device for welding steel pipe
CN103612020A Method for producing composite pipes by adopting composite steel plates in electric resistance welding and surfacing modes
CN103600000A Method for producing lining bimetallic composite pipe by means of drawing and diameter reduction of lining pipe
CN103470911A Protecting structure for coated and weighted sea pipe and protecting method
CN103394881A Novel hot extrusion tee joint forming process
CN103398650A Ellipticity measuring instrument for tube body and measurement method thereof
CN103267801A Submerged-arc welding line automatic-ultrasonic detection method for oil gas conveying steel pipe manufacture
CN103567707A Welding production method for spiral seam submerged-arc welding steel pipes
CN102371386A Edge planer for steel plate