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DEUTSCHE ROEHRENWERKE AG

Overview
  • Total Patents
    123
About

DEUTSCHE ROEHRENWERKE AG has a total of 123 patent applications. Its first patent ever was published in 1929. It filed its patents most often in Germany, United Kingdom and Austria. Its main competitors in its focus markets machine tools, materials and metallurgy and mechanical elements are DEUTSCHE ROHRENWERKE AG, NOE ANDREAS and SHELBY STEEL TUBE COMPANY.

Patent filings in countries

World map showing DEUTSCHE ROEHRENWERKE AGs patent filings in countries
# Country Total Patents
#1 Germany 92
#2 United Kingdom 18
#3 Austria 8
#4 Denmark 3
#5 Finland 1
#6 France 1

Patent filings per year

Chart showing DEUTSCHE ROEHRENWERKE AGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Roeckner Dipl-Ing Martin 5
#2 Keulers Jakob 5
#3 Reichenbecher Georg 4
#4 Schiffler Dr-Ing Hermann Josef 4
#5 Esser Heinrich 4
#6 Roeckner Martin 4
#7 Severin Dipl-Ing Jose 4
#8 Halbrock Fritz 4
#9 Baumgardt Dr Wilhelm 3
#10 Steinhoff Karl 3

Latest patents

Publication Filing date Title
DE804226C Casting process for the production of metallic objects with special surface properties
DE802943C Method and device for lining steelworks molds or similarly shaped foundry molds with a lacquer coating
DE747300C Process and device for operating gas-heated annealing, hardening, forging and welding furnaces
DE744461C Process for the production of centrifugally cast hollow bodies
DE733331C Impeller for mobile machines and transport equipment
DE719296C Furnace for annealing or normalizing sheet metal or strips
DE746170C Welding wires or electrodes made of austenitic steels for welding austenitic manganese steels
DE739169C Process to avoid weld cracks in steel
DE741459C Steel alloy for objects with high notch toughness at low temperatures
DE740215C Caps or nipples to protect threads on pipes or pipe connectors
DE710920C High pressure container lid made of multilayer sheet metal
DE743476C Austenitic manganese steel for objects with a smooth burning edge
DE712231C Process for producing thick-walled hollow bodies
DE715493C Cable or rope drum
DE731354C Valve closure for gas-fired large-scale ovens
DE700503C Glow cakes, glow pots or the like made of heat-resistant, nickel-free, ferritic or ferritic-pearlitic steel alloy
DE717789C Pull-in and pull-out device for pipe connections
DE718881C Process for the production of internally protected iron pipes
DE715033C Method and device for regulating the temperature level within the part to be heated in forgings
DE726909C Adjustment device for rolling mills for rolling pipes with profiled rollers acting from the outside and from the inside in the radial direction on the rolling stock