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EHRHARDT HEINRICH

Overview
  • Total Patents
    42
About

EHRHARDT HEINRICH has a total of 42 patent applications. Its first patent ever was published in 1892. It filed its patents most often in United Kingdom, Austria and Switzerland. Its main competitors in its focus markets machine tools, machines and chemical engineering are SPIRO SA, HALL TAYLOR JAMES and FORGED STEEL WHEEL COMPANY.

Patent filings in countries

World map showing EHRHARDT HEINRICHs patent filings in countries
# Country Total Patents
#1 United Kingdom 19
#2 Austria 7
#3 Switzerland 6
#4 United States 6
#5 Spain 4

Patent filings per year

Chart showing EHRHARDT HEINRICHs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ehrhardt Heinrich 38

Latest patents

Publication Filing date Title
US1059354A Method of producing tubes.
GB191206446A Improvements in or relating to Matrices or Moulds for use in Producing Tubes by Drifting.
GB191123373A Improvements in or relating to a Method and Means for Producing Tubes, Pipes or the like from Blanks by Drifting.
GB191109465A Improvements in or relating to Gun or like Barrels or Tubes.
GB190808094A Improved Method of Forming Tubes from Billets
US801515A Machine for removing adhering slag or cinders from hollow or solid blanks.
US730355A Process of manufacturing wheels.
GB190217092A Improvements relating to Carriages for Ordnance.
GB190217080A Improvements relating to Brakes for Ordnance
US724270A Apparatus for producing tubular bodies.
GB190215605A Improvements relating to Recoil Brakes for Ordnance.
US835505A Cylinder-rolling mill.
GB190020373A An Improvement in Vehicle Wheels
GB189912747A Improvements in or relating to Machines for Rolling Blanks, Tubes, and the like.
GB189909660A Improved Manufacture of Double or Multiple Tubular Metal Articles, such as Gun-barrels.
GB189827392A Method of and Means for Manufacturing Toothed Wheels, Spoke or Disc Wheels, and similar Articles of Wrought Iron or Steel.
GB189814278A Improvements in Wheel-axles.
GB189718034A Improvements in or relating to Driving-gear for Cycles and other Vehicles.
GB189711311A Improvements in the Manufacture of Weldless Tubes and Wires by Rolling.
GB189618471A Improved Transmission Gear for Revolving Shafts of Machinery or Road Vehicles.