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ROYAL RAILWAY IMPROVEMENTS COR

Overview
  • Total Patents
    42
About

ROYAL RAILWAY IMPROVEMENTS COR has a total of 42 patent applications. Its first patent ever was published in 1924. It filed its patents most often in United States and Canada. Its main competitors in its focus markets transport and machines are ACKLEY GRIFFIN S, AMERICAN BRAKE CO and DAVIS BRAKE BEAM COMPANY.

Patent filings in countries

World map showing ROYAL RAILWAY IMPROVEMENTS CORs patent filings in countries
# Country Total Patents
#1 United States 29
#2 Canada 13

Patent filings per year

Chart showing ROYAL RAILWAY IMPROVEMENTS CORs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Transport
#2 Machines

Top inventors

# Name Total Patents
#1 Sauvage William H 39
#2 Henry Sauvage William 3

Latest patents

Publication Filing date Title
US1798436A Regulator for brake rigging
US1798437A Regulator for brake rigging
US1983193A Regulator for brake rigging
US1991262A Regulator for brake rigging
US1767403A Regulator for brake rigging
US1825366A Regulator for brake rigging
US1764228A Regulator for brake rigging
US1991261A Regulator for brake rigging
US1802673A Regulator for brake rigging
US1738395A Air-brake system
US1964333A Regulator for brake rigging
US1809729A Foundation brake rigging
US1681060A Regulator for brake rigging
US1681059A Regulator for brake rigging
US1681058A Regulator for brake rigging
US1681055A Regulator for brake rigging
US1681057A Regulator for brake rigging
US1681056A Regulator for brake rigging
US1720095A Hand brake
US1681054A Foundation brake rigging