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HUNAN DALU TECH CO LTD

Overview
  • Total Patents
    12
  • GoodIP Patent Rank
    142,102
  • Filing trend
    ⇩ 80.0%
About

HUNAN DALU TECH CO LTD has a total of 12 patent applications. It decreased the IP activity by 80.0%. Its first patent ever was published in 2015. It filed its patents most often in China. Its main competitors in its focus markets mechanical elements, measurement and civil engineering are DOUBLE CONTAINMENT SYSTEMS, VICTAULIC COMPANY OF JAPAN LTD and MARUI SANGYO KK.

Patent filings in countries

World map showing HUNAN DALU TECH CO LTDs patent filings in countries
# Country Total Patents
#1 China 12

Patent filings per year

Chart showing HUNAN DALU TECH CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Tong Shehua 12
#2 Sun Saiwu 9
#3 Yang Jia 7
#4 Liu Zhifeng 5
#5 Zhang Yan 4
#6 Yang Chunping 4
#7 Fu Wusong 2
#8 Zheng Peng 2
#9 Jiang Chuntao 2
#10 Zou Ting 2

Latest patents

Publication Filing date Title
CN111809712A Non-excavation repairing device and repairing method for inspection well
CN109738032A A kind of pipeline flow measurement device and method
CN109630803A A kind of pipeline rehabilitation device, system and method
CN109595425A A kind of pipeline rehabilitation device and method
CN108716582A Pipeline local collapse prosthetic device and method
CN107355634A Pipe deforming non-excavation rehabilitation device and method
CN107489852A Spiral winding non-excavation rehabilitation axially compiles pipe device
CN107255203A Spiral winding non-excavation rehabilitation running gear and non-excavation rehabilitation spiral compile guard system
CN107420681A Spiral winding non-excavation rehabilitation radially compiles pipe device
CN106641556A Spirally wound profile and spirally wound pipe
CN105547089A Underground pipeline detection system
CN105387274A Underground pipeline repairing assisting method, device and system