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PETRY DEREUX G M B H

Overview
  • Total Patents
    11
About

PETRY DEREUX G M B H has a total of 11 patent applications. Its first patent ever was published in 1914. It filed its patents most often in Germany and France. Its main competitors in its focus markets thermal processes are WOOD WILFRED ROTHERY, FRANZ KROEPELIN and FERDINAND GRAAFEN.

Patent filings in countries

World map showing PETRY DEREUX G M B Hs patent filings in countries
# Country Total Patents
#1 Germany 10
#2 France 1

Patent filings per year

Chart showing PETRY DEREUX G M B Hs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Thermal processes

Top inventors

# Name Total Patents
#1 Nuber Friedrich 1

Latest patents

Publication Filing date Title
DE428800C Feed water preheater
DE403926C Lying heating tube boiler with an extendable tube system for the recovery of waste heat
DE387387C Laterally moved air seal device for mechanically moved grids
DE336213C Traveling grate with grate bars inserted in the cross member frame
DE336773C Arrangement at the water chambers of the water pipe boiler to protect endangered weld seams
DE323305C Pendulum slag accumulation device for traveling grids
DE346722C Pendulum slag accumulation device for traveling grids
DE481090C Loading device for traveling grids
DE426089C Steep tube boiler
DE457793C Partial inclined tube boiler with transverse top drums