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CRRC QISHUYAN INST CO LTD

Overview
  • Total Patents
    215
  • GoodIP Patent Rank
    6,816
  • Filing trend
    ⇩ 15.0%
About

CRRC QISHUYAN INST CO LTD has a total of 215 patent applications. It decreased the IP activity by 15.0%. Its first patent ever was published in 2012. It filed its patents most often in China, WIPO (World Intellectual Property Organization) and United States. Its main competitors in its focus markets mechanical elements, materials and metallurgy and measurement are SHAANXI FAST AUTO DRIVE GROUP CO LTD, AUTOMATIC TRANSMISSIONS LTD and MERCANTILE LOMBARD CO LTD.

Patent filings in countries

World map showing CRRC QISHUYAN INST CO LTDs patent filings in countries

Patent filings per year

Chart showing CRRC QISHUYAN INST CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zhang Zaili 14
#2 Wen Chao 14
#3 Han Hongwen 13
#4 Xu Sha 12
#5 Zeng Liangbin 12
#6 Du Liqing 12
#7 Lei Guowei 12
#8 Gou Qingbing 11
#9 Huo Wei 11
#10 Duan Zhenzhong 10

Latest patents

Publication Filing date Title
CN112143921A Preparation method for preparing aluminum matrix composite brake disc
CN112091410A Friction stir tool for friction stir processing of to-be-welded aluminum-based composite material
CN112157403A Preparation method for preparing aluminum matrix composite brake disc
CN112049919A Gear box and driving system for railway vehicle and railway vehicle
CN112098077A Comprehensive performance test system for coupler
CN112082912A Steel grain size etching agent and application thereof
WO2021047290A1 Wheel drive system
CN111692313A Gear ring structure and planetary gear transmission device
CN111688409A Hub reduction axle structure, vehicle, mounting method and dismounting method
CN111594603A Axial limit structure and gear box
CN111496177A Furan resin self-hardening sand, manufacturing method thereof and casting sand mold
CN111537167A Negative pressure test system and negative pressure test method for gear box
CN111237433A Gear box and have its rail vehicle
CN111152135A Cooling device and processing equipment
CN110925405A Speed reducer housing, dual-drive speed reducer and automobile
CN110939690A Vehicle dual-drive speed reducer and automobile
CN110725930A Gear box and rail vehicle
CN110578685A Transfer pump, gear box, vehicle and ship
CN110435410A A kind of wheel hub drive
CN110513465A A kind of hub reduction gear combined sealing structure