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LOUIS BOIRAULT

Overview
  • Total Patents
    65
About

LOUIS BOIRAULT has a total of 65 patent applications. Its first patent ever was published in 1903. It filed its patents most often in France, Germany and United Kingdom. Its main competitors in its focus markets transport, mechanical elements and materials and metallurgy are BOIRAULT LOUIS, BRADFORD PATENTS CORP and QINGDAO SRI TECH CO LTD.

Patent filings in countries

World map showing LOUIS BOIRAULTs patent filings in countries
# Country Total Patents
#1 France 47
#2 Germany 8
#3 United Kingdom 6
#4 United States 4

Patent filings per year

Chart showing LOUIS BOIRAULTs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Boirault Louis 47
#2 Louis Boirault 4
#3 Boucher Pierre 4
#4 Dechaume Maurice 1

Latest patents

Publication Filing date Title
US1937683A Automatic adjusting device for brake members
GB334318A Improvements in automatic adjusting device for brake members
GB214236A Improvements in or relating to automatic coupling devices for railway vehicles
GB189431A Improvements in or relating to hand brakes for railway vehicles
US1587364A Momentum brake for railway vehicles
GB195451A Improvements in or relating to automatic coupling devices for railway wagons and coaches
GB144316A Improvements in or relating to brake operating devices for railway vehicles
US1440443A Brake-operating device for railway vehicles
US1445065A Brake-operating mechanism
GB138360A Improvements in or relating to operating mechanism for vehicle brakes