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Class Information
Number: 208/401
Name: Mineral oils: processes and products > By treatment of solid mineral, e.g., coal liquefaction, etc. > Including a test or measurement
Description: Subject matter in which the process includes a step of testing or measuring any parameter involved in the procedure.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6607569 |
Method of estimating reaction product in coal liquefying reaction |
Aug. 19, 2003 |
| 5292429 |
Process for recovery and treatment of a diverse waste stream |
Mar. 8, 1994 |
| 5114567 |
Method for determining the properties and amount of fluid in a sample |
May. 19, 1992 |
| 5055180 |
Method and apparatus for recovering fractions from hydrocarbon materials, facilitating the removal and cleansing of hydrocarbon fluids, insulating storage vessels, and cleansing storage vessel |
Oct. 8, 1991 |
| 4637417 |
Use of a submersible viscometer in the primary separation step of the hot water process for recovery of bitumen from tar sand |
Jan. 20, 1987 |
| 4534849 |
Method for aboveground separation, vaporization and recovery of oil from oil shale |
Aug. 13, 1985 |
| 4505516 |
Hydrocarbon fuel recovery |
Mar. 19, 1985 |
| 4502920 |
Apparatus for aboveground separation, vaporization and recovery of oil from oil shale |
Mar. 5, 1985 |
| 4492674 |
Automated apparatus for solvent separation of a coal liquefaction product stream |
Jan. 8, 1985 |
| 4473459 |
System for transferring a slurry of hydrocarbon-containing solids to and from a wet oxidation reactor |
Sep. 25, 1984 |
| 4451003 |
Control scheme and apparatus for a cogeneration boiler |
May. 29, 1984 |
| 4441984 |
Recovery of oil from oil-bearing limestone |
Apr. 10, 1984 |
| 4397732 |
Process for coal liquefaction employing selective coal feed |
Aug. 9, 1983 |
| 4397731 |
Discharge of solids |
Aug. 9, 1983 |
| 4374017 |
Heat flux control technique |
Feb. 15, 1983 |
| 4364817 |
Method for controlling boiling point distribution of coal liquefaction oil product |
Dec. 21, 1982 |
| 4364818 |
Control of pyrite addition in coal liquefaction process |
Dec. 21, 1982 |
| 4358629 |
Method of producing acetylene from coal |
Nov. 9, 1982 |
| 4345988 |
Method for sealing the drive-side portion of a preparation and hydrogenation chamber for hydrogenating coal with hydrogen to form hydrocarbons |
Aug. 24, 1982 |
| 4344835 |
Method for monitoring and controlling hydrogenation pressure in plant for the hydrogenation of coal with hydrogen to form hydrocarbons |
Aug. 17, 1982 |
| 4334888 |
Coal desulfurization |
Jun. 15, 1982 |
| 4243510 |
Shale retorting process and apparatus |
Jan. 6, 1981 |
| 4221654 |
Hydroprocessing coal liquids |
Sep. 9, 1980 |
| 4214046 |
Method of extracting a liquid electrolyte and other products from coal |
Jul. 22, 1980 |
| 4201656 |
Process aid addition in hot water process based on feed fines content |
May. 6, 1980 |
| 4187167 |
Method and apparatus for the extraction and recovery of hydrocarbons from petroleum bearing materials |
Feb. 5, 1980 |
| 4162960 |
Shale retorting process and apparatus |
Jul. 31, 1979 |
| 4162964 |
Method of handling ash-rich material in a coal deashing process |
Jul. 31, 1979 |
| 4135982 |
Method for preventing plugging in the pyrolysis of agglomerative coals |
Jan. 23, 1979 |
| 4127475 |
Process for the isolation of chemicals from processed coals |
Nov. 28, 1978 |
| 4090945 |
Method of operating an oil shale kiln |
May. 23, 1978 |
| 4083770 |
Use of control system for gas-solids contacting processes |
Apr. 11, 1978 |
| 4060479 |
Process for obtaining oil, gas, sulfur and other products from oil shale |
Nov. 29, 1977 |
| 4036730 |
Solvent-refining of coal |
Jul. 19, 1977 |
| 4025416 |
Shale retorting process |
May. 24, 1977 |
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