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HOKKAIDO RYOKAKU TETSUDO KK

Overview
  • Total Patents
    124
  • GoodIP Patent Rank
    168,008
  • Filing trend
    ⇩ 100.0%
About

HOKKAIDO RYOKAKU TETSUDO KK has a total of 124 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 1997. It filed its patents most often in Japan. Its main competitors in its focus markets environmental technology, transport and mechanical elements are SAGAKOV STANISLAV SVYATOSLAVOV, INNOVATSIONNO VNEDRENCHESKAYA and SAVITSKIJ VSEVOLOD A.

Patent filings in countries

World map showing HOKKAIDO RYOKAKU TETSUDO KKs patent filings in countries
# Country Total Patents
#1 Japan 124

Patent filings per year

Chart showing HOKKAIDO RYOKAKU TETSUDO KKs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kakinuma Hirohiko 60
#2 Sato Iwao 37
#3 Sato Yorimitsu 30
#4 Tamaoki Toshiharu 16
#5 Shikimura Tomoo 13
#6 Inaba Tadashi 12
#7 Arakawa Hiroshi 11
#8 Kimura Takuya 10
#9 Nanba Toshio 9
#10 Takemura Yasuteru 9

Latest patents

Publication Filing date Title
JP2019066363A Ultrasonic sound wave inspection device, instrument and liquid substance cut-off jig
JP2018204225A Rail polishing device
JP2018177052A Operation lever rotating tool
JP2018053556A Track structure and method of constructing the same
JP2017129475A Construction gauge measurement system, method of construction gauge measurement, and measurement base for construction gauge measurement system
JP2017109503A Cock reposition forgetting prevention jig
JP2015165162A Vehicle blake shoe and friction material
JP2016142112A Rail polishing device
JP2016046069A Tunnel illumination system for railroad
JP2015212114A Vehicle for sand sprinkling, and sand sprinkling method
JP2015007353A Rail movable device and vehicle extension system with the same
JP2014221984A Rail clamp device, rail fixing method using rail clamp device, and rail corrective griding device
JP2014148180A Railroad crossing control system and railroad crossing control method for dual-mode vehicles
JP2014125768A Foreign matter intrusion prevention member in three-line rail track
JP2013152018A Railway vehicle brake shoe and method of manufacturing the same, and ceramic block for railway vehicle brake shoe and method of manufacturing the same
JP2012153364A Railway train carrying-in/out method
JP2013049972A Turnout electric snow melting device remote control system and turnout electric snow melting device remote control method
JP2012245808A Traveling vehicle
JP2012205332A Vehicle monitoring device and vehicle monitoring system using the same
JP2012189175A Vehicle brake shoe and friction material