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DONG DO ENGINEERING CO LTD

Overview
  • Total Patents
    13
  • GoodIP Patent Rank
    224,193
About

DONG DO ENGINEERING CO LTD has a total of 13 patent applications. Its first patent ever was published in 1997. It filed its patents most often in Republic of Korea. Its main competitors in its focus markets mechanical elements, machines and civil engineering are SUMIYOSHI SEISAKUSHO KK, SANKO GAS SEIKI KK and WENDENG HONGTONG PEGP CO LTD.

Patent filings in countries

World map showing DONG DO ENGINEERING CO LTDs patent filings in countries
# Country Total Patents
#1 Republic of Korea 13

Patent filings per year

Chart showing DONG DO ENGINEERING CO LTDs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Kwon Tae Ju 7
#2 Kweon Tae Joo 2
#3 Kweon Tea Joo 2
#4 Kwon Tae Joo 2
#5 Yang Sung Kyeung 1
#6 Baek Heung Ki 1
#7 Shin Heung Sup 1
#8 Kwon In Sup 1

Latest patents

Publication Filing date Title
KR101654504B1 Removal method of liner wrinkles for the large-diameter old pipe rehabilitation
KR101646535B1 Liner construction method for long-distance old pipe regeneration
KR101120927B1 An wrinkle removed method by polyethylene welding of liner repair-pipe and its apparatus
KR101026568B1 Trenchless water pipe renovation method without suspension of water supply
KR100923027B1 Polyurea spray-repairing method of old water service pipe and its apparatus
KR100813860B1 An unrumple method of liner repair-pipe and its apparatus
KR100825025B1 Flange making method of polyethylene pipe rehabilitation and its device
KR100606188B1 Polyethylene pi p e rehabilitation
KR20030048656A Branchpipe-liner of revival pipe and its lining system, its lining method
KR20020083085A Branch pipe revival method of revival pipe and revival pipe for branch pipe
KR20010113382A A folding binder of poly ethylene liner for old water pipe
KR100251219B1 Water supply pipe regeneration method and apparatus thereof
KR100217696B1 Liner for repairing degraded pipe and the coating method of liner