Learn more

SUMITOMO CONSTR MACH

Overview
  • Total Patents
    831
About

SUMITOMO CONSTR MACH has a total of 831 patent applications. Its first patent ever was published in 1988. It filed its patents most often in Japan. Its main competitors in its focus markets civil engineering, mechanical elements and environmental technology are MARION POWER SHOVEL CO, JIANGSU BADA HEAVY INDUSTRY MACHINERY CO LTD and LEHNHOFF HARTSTAHL GMBH.

Patent filings in countries

World map showing SUMITOMO CONSTR MACHs patent filings in countries
# Country Total Patents
#1 Japan 831

Patent filings per year

Chart showing SUMITOMO CONSTR MACHs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ohashi Hiroshi 67
#2 Tsukamoto Hiroyuki 52
#3 Kahara Akira 46
#4 Sakai Noriyuki 38
#5 Ishii Nobuyuki 34
#6 Sako Yukio 29
#7 Kashima Naoki 26
#8 Inoue Kazuaki 21
#9 Sano Noboru 18
#10 Kawamoto Masaharu 16

Latest patents

Publication Filing date Title
JP2001262621A Lower frame of civil engineering/construction machinery
JP2001262623A Cab and cover of civil engineering/construction machinery
JP2001263132A Engine control device mounted on construction machine
JP2001253686A Winch synchronizing device for crane
JP2001254400A Hydraulic circuit for construction machine
JP2001254395A Hydraulic hose piping structure for work machine
JP2001248476A Engine control device mounted on construction machine and controlling method
JP2001248475A Engine control device mounted on construction machine and controlling method
JP2001239186A Suspended matter removal device
JP2001227623A Revolving reduction gear for construction machine
JP2001226077A Construction machinery with electric actuator for working machine and swing drive device
JP2001221202A Hydraulic circuit for construction equipment
JP2001219824A Spray device driving circuit for washer liquid of construction machine
JP2001206673A Electric mobile crane
JP2001207482A Hybrid shovel
JP2001206238A Crawler type electric traveling drive unit for working machinery
JP2001206675A Winch for construction machine
JP2001208040A Connecting device
JP2001207478A Motor-driven shovel
JP2001207772A Kelly-bar device