Learn more

MARUJUN HEAVY INDUSTRY CO LTD

Overview
  • Total Patents
    36
About

MARUJUN HEAVY INDUSTRY CO LTD has a total of 36 patent applications. Its first patent ever was published in 2000. It filed its patents most often in Japan. Its main competitors in its focus markets civil engineering are FOSSURA AS, UNIT SAFETY SIGN CO LTD and NITTA NAOMASA.

Patent filings in countries

World map showing MARUJUN HEAVY INDUSTRY CO LTDs patent filings in countries
# Country Total Patents
#1 Japan 36

Patent filings per year

Chart showing MARUJUN HEAVY INDUSTRY CO LTDs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering

Focus technologies

# Technology
#1 Dredging

Top inventors

# Name Total Patents
#1 Ogawa Junji 24
#2 Ogawa Kanji 13
#3 Yatomi Shigeru 2
#4 Cho Heiho 1
#5 Taboso Hiromitsu 1

Latest patents

Publication Filing date Title
JP2011063952A Clamshell bucket device
JP2011036981A Cutter for hydraulic shovel
JP2009091757A Grapple device of construction machine
JP2009041318A Grapple device of construction machine
JP2006223314A Construction machine
JP2007274943A Telescopic boom-supporting device in working machine
JP2007144303A Crush drum of crusher
JP2007136402A Side face opening/closing device of crusher
JP2006241776A Auger driving unit of working machine
JP2006226013A Work machine with scraper
JP2006188916A Hydraulic rotating device, and working machine for soil improvement using hydraulic rotating device
JP2005341910A Apparatus and method for collecting thinned wood
JP2005325955A Hydraulic rotating device
JP2005247443A Actuator cylinder coupling device for attachment to construction machine
JP2005213005A Grapple device for construction machine
JP2005200911A Skeleton bucket
JP2005155417A Waveform cam surface hardening treatment method for hydraulic rotation equipment
JP2005155389A Hydraulic turning device
JP2005052719A Magnetizer
JP2005034722A Crusher