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HOKKAIDO RIYOKAKU TETSUDO KK

Overview
  • Total Patents
    17
About

HOKKAIDO RIYOKAKU TETSUDO KK has a total of 17 patent applications. Its first patent ever was published in 1987. It filed its patents most often in Japan. Its main competitors in its focus markets measurement, mechanical elements and civil engineering are HERZOG CONTRACTING CORP, PANDROL JACKSON INC and RASSINI FRENOS SA DE CV.

Patent filings in countries

World map showing HOKKAIDO RIYOKAKU TETSUDO KKs patent filings in countries
# Country Total Patents
#1 Japan 17

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Umemoto Hiroyuki 6
#2 Yamaguchi Ichiro 5
#3 Obara Shigeru 5
#4 Taniguchi Isamu 5
#5 Fukuda Takeji 3
#6 Hirata Kazutoshi 2
#7 Fushimi Kazuhide 2
#8 Numata Satoru 2
#9 Yanagawa Hideaki 2
#10 Bando Shigemi 2

Latest patents

Publication Filing date Title
JPH10252030A Multi-function type snowplow device for railway
JPH1030661A Brake shoe for rolling stock and manufacture thereof
JPH0989848A Ultrasonic rail inspection system
JPH0881911A Elastic road surface decking structural body and connection structure thereof
JPH0881906A Elastic road surface decking
JPH0881910A Mounting structure of elastic road surface decking
JPH0881909A Elastic road surface decking
JPH0881905A Mounting structure of elastic road surface decking
JPH06183321A Brake control device
JPH06146201A Buckling prevention device of rail
JPH06228906A Rubber coated concrete passing sole plate and manufacturing method thereof
JPH0617401A Rail buckling preventive device
JPH0325101A Vibration proof device of sleeper of rail on ballast
JPH02310169A Soffer bed for vehicle
JPH02282680A Container device for refrigerator
JPH02208138A Sofa and bed in one for vehicle
JPS6410399A Luggage receiving/shipping apparatus