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CURT STEDEFELD

Overview
  • Total Patents
    20
About

CURT STEDEFELD has a total of 20 patent applications. Its first patent ever was published in 1926. It filed its patents most often in United States, United Kingdom and France. Its main competitors in its focus markets transport, civil engineering and materials and metallurgy are AEROBUS INT INC, SAFEGE TRANSP and ZHONGJIAN KONGLIE BEIJING TECH CO LTD.

Patent filings in countries

World map showing CURT STEDEFELDs patent filings in countries
# Country Total Patents
#1 United States 10
#2 United Kingdom 9
#3 France 1

Patent filings per year

Chart showing CURT STEDEFELDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Curt Stedefeld 10
#2 Kruckenberg Franz 1

Latest patents

Publication Filing date Title
US2063471A Multistage hydraulic coupling
US2068714A Elastic permanent way
US1762086A Method of jointlessly welding rails
GB291723A Improvements in and relating to welding of rails
US1710437A Vehicle carrying rail, in particular for high-speed suspended-vehicle railways
GB289854A Improvements in turning arrangements for mono rail suspended vehicles
GB289776A Improvements in and relating to high speed suspended railways
GB295211A Improvements in vehicle carrying rails
US1762085A Apparatus for jointlessly welding rails
GB282806A Improvements in and relating to welding of rails
US1805928A Running gear for high-speed suspension cars
US1725310A Lateral springing for vehicle running gears
GB288864A Improvements in lateral springing for vehicle running gears
GB273326A Improvements in the heat treatment of welded rail joints
US1704410A Method of welding rail joints
US1750064A Running gear for high-speed suspension cars