Learn more

GFK KOHLEVERFLUESSIGUNG GMBH

Overview
  • Total Patents
    49
About

GFK KOHLEVERFLUESSIGUNG GMBH has a total of 49 patent applications. Its first patent ever was published in 1981. It filed its patents most often in Germany, Australia and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets basic materials chemistry are CARBURETTED GAS, VEBA OEL ENTWICKLUNGS GMBH and KOSEOGLU OMER REFA.

Patent filings per year

Chart showing GFK KOHLEVERFLUESSIGUNG GMBHs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Wuerfel Helmut 23
#2 Wuerfel Helmut Dipl Ing Dr 8
#3 Wurfel Helmut 6
#4 Wuerfel Helmut Dr Ing 4
#5 Merseburger Wolfgang 3
#6 Schanne Lothar 2
#7 Beinhauer Rudolf 2
#8 Wuerfel Helmut Dr 2
#9 Wuerfel Helmut Dipl Ing Dr Ing 2
#10 Helmut Wurfel 2

Latest patents

Publication Filing date Title
DE3943036A1 Process for the hydrogenation of a carbon-containing feed, in particular coal and / or heavy oil
DE3912807A1 Heavy oils hydrogenation in sump-phase process - using carbon black as an additive or catalyst
DE3830471A1 Process for the combined hydrogenation of coal and heavy oil
DE3830485A1 Process for the hydrogenation of coal
DE3801001A1 METHOD FOR LIQUIDIZING COAL
DE3718748A1 Coal-hydrogenation process
DE3600615A1 METHOD FOR CONTINUOUSLY COOKING THE LIQUID RESIDUE FRACTION CONTAINED IN A COAL LIQUIDING PLANT
DE3447233A1 Process for producing fuel comparable with heavy fuel oil
AU3614184A Coal liquefaction
CA1228314A Method for further processing of the hydrogenation residue arising during hydrogenation of heavy oils
DE3438330A1 Process for liquefying coal
DE3325243A1 Process for coking high-molecular hydrocarbons
DE3323572A1 Process for further treatment of the hydrogenation residue arising in the hydrogenation of heavy oils
DE3311356A1 Process for the hydrogenation of coal
DE3311357A1 Process for the coking of heavy oils
DE3246609A1 METHOD FOR HYDROGENATING COAL
DE3240881A1 Process for transferring a suspension, which is to be hydrogenated, of fresh coal and pasting oil
AU8996382A Verfahren zum aufbereiten von ruckstanden aus der kohlehydrierung
DE3143353A1 METHOD FOR PROCESSING RESIDUES FROM CARBOHYDRATION
DE3141380A1 METHOD FOR HYDROGENATING COAL