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NIPPON KOEI CO LTD

Overview
  • Total Patents
    151
  • GoodIP Patent Rank
    85,579
About

NIPPON KOEI CO LTD has a total of 151 patent applications. Its first patent ever was published in 1969. It filed its patents most often in Japan, Republic of Korea and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets civil engineering, machines and electrical machinery and energy are SONDOV STEN Y, CLEANPIPE AS and BROMBACH HANSJOERG.

Patent filings per year

Chart showing NIPPON KOEI CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hasegawa Kenji 23
#2 Ito Motonobu 22
#3 Komatsu Hiroshi 21
#4 Yamanouchi Kazuhiro 15
#5 Ito Iwao 15
#6 Mizobe Tetsuo 11
#7 Matsuzaki Shigemi 11
#8 Aoyama Takato 8
#9 Odate Takaaki 8
#10 Igawa Osamu 8

Latest patents

Publication Filing date Title
WO2020202595A1 Natural penetration promotion method and spray material
JP2018184833A Soil spray material for soil erosion prevention and soil spray material content set for soil erosion prevention
JP2020009593A Microbial fuel cell, power generator and sewage treatment system
JP2019205226A Stator for generator and manufacturing method thereof
JP2017096684A Rubble concrete strength evaluation method and rubble concrete strength evaluation program
JP2017002483A Opening/closing device
JP2016198692A Device for treating contaminated water
JP2016196769A Soil application agent, manufacturing method of soil application agent, soil erosion prevention method and container set of soil application agent
JP2016176199A Opening/closing device
JP2016105667A Natural energy power generation system
JP2015216757A Hybridized renewable energy system
JP2015208709A Vertical sand sedimentation pond
JP2014086530A Moisture absorption respiratory
JP2014032164A Three-dimensional displacement measurement system for structure using digital camera
JP2011112481A Apparatus and method for analyzing mudflow containing driftwood
JP2009287389A Sluice gate freeze preventing device using induced heat-generating steel pipe
JP2011047792A Device and method for measuring tensile strength of soil
JP2011013137A Digital hollow displacement gauge
JP2010263166A Membrane for conservator
JP2009255981A Oil retaining wall of apparatus containing oil