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TOHOKU OKAJIMA KOGYO KK

Overview
  • Total Patents
    28
About

TOHOKU OKAJIMA KOGYO KK has a total of 28 patent applications. Its first patent ever was published in 1999. It filed its patents most often in Japan. Its main competitors in its focus markets civil engineering, environmental technology and machine tools are SCHMIDT REUTER, E M VAN DE POL S HANDELSONDERN and LANDSEA GROUP CO LTD.

Patent filings in countries

World map showing TOHOKU OKAJIMA KOGYO KKs patent filings in countries
# Country Total Patents
#1 Japan 28

Patent filings per year

Chart showing TOHOKU OKAJIMA KOGYO KKs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Okajima Nobuyuki 28
#2 Horigome Yukio 5
#3 Goto Hiroshi 2
#4 Sasaki Haruhiko 2
#5 Okajima Nobuaki 1

Latest patents

Publication Filing date Title
JP2013083043A Antitheft tool for grating
JP2012087517A Door rail member and manufacturing method thereof
JP2010281057A Manufacturing method for grating
JP2010255039A Method for manufacturing grating made from colored stainless steel, and grating made from colored stainless steel obtained by the manufacturing method
JP2009299376A Connection structure of grating
JP2009264068A Connection structure for grating
JP2009228295A Structure for mounting grating in grooved block
JP2009191470A Connection structure of grating
JP2009097311A Mounting structure of grating
JP2009091851A Side ditch block with metal support frame
JP2007277832A Ditch lid with raising members
JP2007224624A Expanded metal with irregular pattern and its manufacturing method
JP2007092458A Gangway apparatus for manhole
JP2006169728A Openable lid
JP2006118325A Grating
JP2006106369A Cover with plate
JP2005232803A Opening/closing cover
JP2005171611A Main member for grating
JP2005120713A Road concrete ditch
JP2004346544A Opening and closing lid