Learn more

INT COAL REFINING CO

Overview
  • Total Patents
    101
About

INT COAL REFINING CO has a total of 101 patent applications. Its first patent ever was published in 1980. It filed its patents most often in United States, South Africa and Australia. Its main competitors in its focus markets basic materials chemistry, chemical engineering and machines are PETROLEUM RECTIFYING CO CALIFORNIA, PATRON LUIGI and INDIAN REFINING CO.

Patent filings in countries

World map showing INT COAL REFINING COs patent filings in countries
# Country Total Patents
#1 United States 35
#2 South Africa 15
#3 Australia 14
#4 Canada 12
#5 Germany 9
#6 United Kingdom 9
#7 Japan 7

Patent filings per year

Chart showing INT COAL REFINING COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Givens Edwin N 27
#2 Thorogood Robert M 14
#3 Skinner Ronald W 12
#4 Tao John C 11
#5 Znaimer Samuel 9
#6 Hoover David S 8
#7 Ying David H S 7
#8 Foster Edward P 7
#9 Donath Ernest E 6
#10 Yeh Chung-Liang 6

Latest patents

Publication Filing date Title
US4609455A Coal liquefaction with preasphaltene recycle
US4603115A Automated process for solvent separation of organic/inorganic substance
US4737261A Process for the production of premium grade needle coke from a hydrotreated SRC material
US4555248A Process for stabilizing the viscosity characteristics of coal derived materials and the stabilized materials obtained thereby
US4518479A Time phased alternate blending of feed coals for liquefaction
US4675024A Process for preparing a stabilized coal-water slurry
US4511460A Minimizing corrosion in coal liquid distillation
US4511453A Corrosion inhibition when distilling coal liquids by adding cresols or phenols
US4514281A Corrosion inhibition for distillation apparatus
US4570551A Firing of pulverized solvent refined coal
US4536275A Integrated two-stage coal liquefaction process
US4924784A Firing of pulverized solvent refined coal
US4576121A Convective heater
US4534847A Process for producing low-sulfur boiler fuel by hydrotreatment of solvent deashed SRC
US4547201A SRC Residual fuel oils
US4480560A Pneumatic conveying of pulverized solvent refined coal
US4491511A Two-stage coal liquefaction process
US4510040A Coal liquefaction process
US4521299A Removal of basic nitrogen compounds from hydrocarbon liquids
US4558651A Fired heater for coal liquefaction process