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EHRICH & GRAETZ AG

Overview
  • Total Patents
    203
About

EHRICH & GRAETZ AG has a total of 203 patent applications. Its first patent ever was published in 1902. It filed its patents most often in Germany, United Kingdom and Austria. Its main competitors in its focus markets thermal processes, electrical machinery and energy and engines, pumps and turbines are EHRICH & GRAETZ A G, PAGEL WILLIAM F and PAUL CRAMER.

Patent filings in countries

World map showing EHRICH & GRAETZ AGs patent filings in countries
# Country Total Patents
#1 Germany 135
#2 United Kingdom 27
#3 Austria 13
#4 France 12
#5 Switzerland 4
#6 Spain 4
#7 Finland 4
#8 Denmark 2
#9 United States 2

Patent filings per year

Chart showing EHRICH & GRAETZ AGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Lahde Dipl-Ing Hermann 9
#2 Bruening Otto 6
#3 Wuerker Arthur 6
#4 Marowsky Max 5
#5 Graetz Fritz 5
#6 Ehrich Graetz 4
#7 Gronow Sigurd 3
#8 Weiher Dipl-Ing Albert 3
#9 Hermann Lahde 2
#10 Wucherer Franz 2

Latest patents

Publication Filing date Title
DE720519C Electric radiant heater
DE704013C Luminous or heat device
US2276034A Improved jet cleaning means
DE697885C Gas light
DE700213C Atomizer preheating burner for lights and heaters
DE710270C Gas light
DE698973C Evaporator for refrigeration machines
DE691167C With pressurized air standing fermegeraet
DE690857C Cast iron electric hotplate
DE690389C Handle for electric iron
GB521015A Improvements in or relating to preheaters for lighting and heating apparatus fed by liquid fuel under air pressure
DE686589C Remote switch responding to permanent gas pressure changes
DE707203C Darkening device for lights, public lighting
DE687309C Atomizer preheater
DE696477C Carburettor with needle control
DE683643C Electric hotplate
DE678687C Pre-heater for lighting and heating devices fed with liquid fuels under air pressure
DE722989C Gas pressure regulator
DE713731C Gas pressure regulator
GB494486A Control device for fuel delivery pumps