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POLY CHANGDA ENG CO LTD

Overview
  • Total Patents
    51
  • GoodIP Patent Rank
    29,046
About

POLY CHANGDA ENG CO LTD has a total of 51 patent applications. Its first patent ever was published in 2019. It filed its patents most often in China, EPO (European Patent Office) and United States. Its main competitors in its focus markets civil engineering, materials and metallurgy and machines are ROAD & BRIDGE INT CO LTD, CHINA COMM 2ND NAVIGATIONAL BUREAU 2ND ENG CO LTD and ANHUI ROAD & BRIDGE ENG CO LTD.

Patent filings in countries

World map showing POLY CHANGDA ENG CO LTDs patent filings in countries
# Country Total Patents
#1 China 49
#2 EPO (European Patent Office) 1
#3 United States 1

Patent filings per year

Chart showing POLY CHANGDA ENG CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Xu Yonggang 9
#2 Yang Donglai 8
#3 Jiang Shengwen 7
#4 Lei Zungui 7
#5 Wang Zhongwen 7
#6 Shi Min 6
#7 Gao Jun 6
#8 Cui Tong 6
#9 Zhang Shunxian 5
#10 Mao Nongping 5

Latest patents

Publication Filing date Title
CN112064523A Reinforcing method for additionally arranging beam slab structure on old stone arch bridge
CN112176888A Reinforcing method for arch back enlarged section structure of old stone arch bridge
CN112062602A Carbonization curing method for two-lining concrete and construction method thereof
CN111877419A Method for measuring steel shell at prefabricated pipe joint end of immersed tunnel
CN112064626A Construction method of super-long large-diameter rotary digging pile
CN112030777A Descending movable formwork support bracket crossing type transfer construction method
CN112180778A Heat conduction oil furnace app cell-phone end monitored control system
CN111827150A Reinforcing method for additionally arranging new arch ring under main arch ring of old stone arch bridge
CN111877191A Method for reinforcing enlarged section of double-arch bridge
CN111945575A Large-scale bearing platform double-wall sleeve box integral hoisting construction device and construction method
CN112192704A Portable chiseling method for cement concrete
CN111778882A Method for reinforcing plate arch formed by reforming main arch rib of double-arch bridge
CN111873187A UHPC batching and mixing apparatus
CN111823403A Material lifting and discharging device
CN111823395A Portable UHPC mixer
CN111719447A Novel hyperbolic arch bridge deck widening and reinforcing method
CN111927331A Adjustable anchor rod drilling machine support
CN111894006A Steel sheet pile supporting structure serving as cushion cap formwork support and construction method
CN111894056A Foundation ditch excavation instrument in finite space
CN111877170A Jig frame for integral prefabrication and hoisting of large pier body reinforcing steel bars and pier body reinforcing steel bar construction method