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ERWIN STURM

Overview
  • Total Patents
    62
About

ERWIN STURM has a total of 62 patent applications. Its first patent ever was published in 1919. It filed its patents most often in Germany, United Kingdom and United States. Its main competitors in its focus markets engines, pumps and turbines, mechanical elements and machine tools are PITTLER WILHELM VON, TYPOWYCH ELEMENTOW HYDRAULIKI and MCGILL DANIEL F.

Patent filings in countries

World map showing ERWIN STURMs patent filings in countries
# Country Total Patents
#1 Germany 39
#2 United Kingdom 13
#3 United States 8
#4 Switzerland 1
#5 France 1

Patent filings per year

Chart showing ERWIN STURMs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Erwin Sturm 9
#2 Sturm Erwin 5
#3 Kleih Paul 1
#4 Schwab Erwin 1
#5 Krudewig Johannes Dr-Ing 1
#6 Krudewig Dipl-Ing Johannes 1

Latest patents

Publication Filing date Title
US2818707A Rotary pump and motor hydraulic transmission
US2791184A Hydraulic transmission
US2750895A Rotary pump and motor hydraulic transmission
GB539131A Improvements in or relating to rope drums
US2344115A Rope drum with regulable hydraulic drive, especially for lifts
GB532519A Driving mechanism for planing machines
GB520914A Improvements in or relating to rotary hydraulic power transmission units
GB439027A Improvements in or relating to rotary piston engines
US2049092A Rotary piston engine especially for fluid gears
GB390044A Improvements in and relating to hydraulic drives
GB362758A Improvements in and relating to rotary engines
US1925215A High-speed shaping machine with hydraulic drive
GB348053A Improvements in and relating to rotary pumps and motors for hydraulic drives
US1895353A Rotary engine
US1943637A High pressure rotary engine, especially for hydraulic transmissions
DE568504C Rotary piston machine
GB255873A Improvements in rotary piston machines
GB216525A Improvements in and relating to hydraulic change speed gears
GB226082A Improvements in or relating to rotary piston machines
GB221749A Improvements in hydraulic variable speed gearing