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BAOJI OILFIELD MACHINERY CO

Overview
  • Total Patents
    444
  • GoodIP Patent Rank
    4,239
  • Filing trend
    ⇩ 17.0%
About

BAOJI OILFIELD MACHINERY CO has a total of 444 patent applications. It decreased the IP activity by 17.0%. Its first patent ever was published in 2007. It filed its patents most often in China, Norway and United States. Its main competitors in its focus markets civil engineering, packaging and shipping and machine tools are MHWIRTH AS, XINYINXIANG TIANJIN TECH CO LTD and PRAKLA BOHRTECHNIK GMBH.

Patent filings in countries

World map showing BAOJI OILFIELD MACHINERY COs patent filings in countries

Patent filings per year

Chart showing BAOJI OILFIELD MACHINERY COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Liu Hongliang 42
#2 Zhang Pengfei 39
#3 Yu Xingjun 32
#4 Wang Dingya 28
#5 Fan Chunming 25
#6 Lei Guangjin 23
#7 Zhang Zhiwei 19
#8 Zhang Qiang 19
#9 Wang Yaohua 16
#10 Ren Keren 16

Latest patents

Publication Filing date Title
CN112253645A Wet-type double-clutch automatic gear shifting system for petroleum drilling winch
CN112264568A Forging method for air bag shell forming die of drilling pump for circulating system of petroleum drilling machine
CN112264567A Die forging method for traveling block lifting ring for petroleum drilling machine lifting system
CN111561443A Fracturing pump electric disc pump device
CN111515639A Processing method of plunger pump connecting rod assembly
CN111535758A Automatic processing method for 2-single-1-upright-column drilling machine tubular column
CN111596607A Upper computer general HMI interface design method capable of configuring text and operation command
CN111424222A Steel casting for lifting system of ultra-deep well petroleum drilling machine and manufacturing method thereof
CN111535748A Laser drill bit with negative pressure suction function
CN111305773A Jaw-replacement-free continuous rotation power tongs for iron roughneck
CN111268633A Distributed automatic control system of continuous refueling device
CN111267035A Fast dismounting tool for cylinder sleeve of drilling pump
CN111185786A Machining tool for turning outer circle of thin-wall cylinder and using method thereof
CN111271528A Double-speed telescopic high-pressure manifold connecting device
CN111206887A Single-drive double-action holding forceps
CN111069943A Clamp for milling tooth socket of cylindrical tong and machining method thereof
CN111156164A Self-boosting type middle pull rod lubricating device for drilling pump
CN111197602A Seabed base plate hydraulic system and energy-saving control method of system
CN111188801A Novel two-position six-way hydraulic control reversing valve
CN111021943A Modular quick-connection rotary table hydraulic driving device