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DONG AH CONSTR IND CO LTD

Overview
  • Total Patents
    52
About

DONG AH CONSTR IND CO LTD has a total of 52 patent applications. Its first patent ever was published in 1993. It filed its patents most often in Republic of Korea, China and United States. Its main competitors in its focus markets civil engineering, environmental technology and measurement are POSCO ENG & CONSTR CO LTD, HYUNDAI CONSTRUCTION CO LTD and DREAM ENGINEERING CO LTD.

Patent filings in countries

World map showing DONG AH CONSTR IND CO LTDs patent filings in countries
# Country Total Patents
#1 Republic of Korea 50
#2 China 1
#3 United States 1

Patent filings per year

Chart showing DONG AH CONSTR IND CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kim Seong-Hyun 5
#2 Jo Yong 5
#3 Kim Du Yeong 4
#4 Lee Sang Sup 3
#5 Gueon Hyeok-Seung 3
#6 Lee Jong-Min 3
#7 Li Jong-Min 3
#8 Kim Jeong-Jin 2
#9 Choe I S 2
#10 Lee Sang-Sub 2

Latest patents

Publication Filing date Title
KR20090037045A A nut reclamation type culvert
KR20090037041A Gasket reclamation type culvert and producing method
KR20090037053A A pin reclamation type culvert
KR20020021550A Method for designing and constructing high strength concrete construction for PSC beam bridge
KR20020016384A Device for combining injection unit with incense vessel
KR20000037484A Safety device for protecting operator when getting on/out tower crane
KR20000037351A Process and apparatus for nitrogen and phosphorus removal
KR20000058314A Discharge apparatus with rubber-compression type in the process of sequencing batch reactor
KR20000037079A Discharge apparatus with floating type in the process sequencing batch reactor
KR20010088225A Electronic apparatus for spraying flavor automatically
KR20000007030A Tunnel structure of double loop
KR20010047098A Method and construction for constructing a bcl
KR20000074829A Process for production gas fuel from Landfill gas and the system therefor
KR20000044701A Device and method for testing fineness by 45 micrometers standard material
KR20000044699A Method for building integrated pile bridge
KR20000044702A Production method of fly-ash mixing mortar to increase early strength
KR20000044700A Method of constructing cyclic control plug joint for allowing displacement of integrated bridges
KR20000012866A Construction method of connection steel reinforcing integration of bridge structure using pc beam
KR100239671B1 The rock blasting method
KR19990048646A The rock blasting method