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OKAMOTO KENSETSU YOHIN SEISAKU

Overview
  • Total Patents
    15
About

OKAMOTO KENSETSU YOHIN SEISAKU has a total of 15 patent applications. Its first patent ever was published in 1994. It filed its patents most often in Japan. Its main competitors in its focus markets environmental technology are SANKYO DENSHI KOGYO KK, NOVOSIB OTDEL VG PI TEPLOELEKT and ZAP SIB OTDEL VNII GEOFIZICHES.

Patent filings in countries

World map showing OKAMOTO KENSETSU YOHIN SEISAKUs patent filings in countries
# Country Total Patents
#1 Japan 15

Patent filings per year

Chart showing OKAMOTO KENSETSU YOHIN SEISAKUs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

Top inventors

# Name Total Patents
#1 Okamoto Yoshikazu 7
#2 Yoshida Takeshi 7
#3 Kitamura Hitoshi 3
#4 Ueki Toshihiro 3
#5 Yoshida Katsuyuki 2
#6 Kubota Yoshihito 1
#7 Yoshida Yasuyuki 1
#8 Kakiya Katsuhiro 1
#9 Kimura Eri 1
#10 Yasumura Toshihiro 1

Latest patents

Publication Filing date Title
JP2009256968A Non-welded steel pipe joint
JP2009097151A Permeable structure
JP2005220742A Structure of steel pipe joint
JP2003328677A Casing for shaft excavation
JP2002327881A Coupling for fluid piping
JP2001241038A Joint construction for steel pipe
JP2001098573A Lining plate for shaft
JP2000352022A Pit protection fence
JP2000064273A Joint structure and pile connecting method making use of the joint structure
JPH11158867A Steel pipe pile and sealing cover thereof
JPH11158866A Steel pipe welding backing metal
JPH10318450A Concrete pipe and joint collar thereof
JPH10184922A Seal member mounting jig
JPH10131512A Covering plate for vertical shaft
JPH07229141A Concrete pile and concrete pipe