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FR GROEPPEL C LUEHRIG S NACHFO

Overview
  • Total Patents
    12
About

FR GROEPPEL C LUEHRIG S NACHFO has a total of 12 patent applications. Its first patent ever was published in 1924. It filed its patents most often in Germany. Its main competitors in its focus markets chemical engineering, basic materials chemistry and packaging and shipping are WAM IND SPA, GRAHAM MAURICE and PNEUMATIC CONVEYANCE & EXTRACT.

Patent filings in countries

World map showing FR GROEPPEL C LUEHRIG S NACHFOs patent filings in countries
# Country Total Patents
#1 Germany 12

Patent filings per year

Chart showing FR GROEPPEL C LUEHRIG S NACHFOs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Boelk Wilhelm 1

Latest patents

Publication Filing date Title
DE535842C Drying chamber or smoldering furnace for ores, briquettes or other bulk goods
DE530037C Air set stove with longitudinal guide rails on the laterally inclined stove surface
DE568523C Bunker with operating bunker and storage bunker for coal and coke
DE468559C Upsetting machine
DE556437C Process for separating solids from liquids using a drum filter
DE482786C Process for the production of pellets from hot sintered material
DE529869C Device for controlling the infeed and infeed of wagons in rotary luffers
DE423588C Coke oven battery system
DE522265C Device for equalizing the angle of rotation of two drive cranks or crankshafts in Raettersieben
DE553688C Removal device for the filter material on rotary filters with a flat surface
DE582678C Bunker arrangement with operating bunker and storage bunker for coal and coke