Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 4406778 | Spent oil recovery process A process for reclaiming spent oil comprises the steps of removing water and light hydrocarbons, thermally treating the stripped oil, extracting it with a supercritical gas to insolubilize impurities and additives, separating the gas-rich fractions from t... | 09/27/1983 |
| 4383915 | Clay contacting process for removing contaminants from waste lubricating oil A process is provided for removing contaminants from waste lubricating oil. The previously untreated waste oil is contacted with decolorizing clay and the mixture is heated to and retained for a period of time at a temperature in the range of about 650°-... | 05/17/1983 |
| 4381992 | Reclaiming used lubricating oil A novel process for the purification of used oil comprising removing the ash-forming components, then subjecting the oil to vacuum fractionation. A novel vacuum fractionation column is also disclosed.... | 05/03/1983 |
| 4366049 | Process for recycling of used lubricating oils The object of the invention is a process for recycling used lubricating oils. After drying and gasoline removal, the oil is distilled and then treated with sodium or sodium hydride in a finely-divided state at elevated temperature. This is followed by a f... | 12/28/1982 |
| 4312741 | Process and apparatus for catalytic hydrocarbon conversion A catalytic process for the conversion of hydrocarbons or bituminous shales or carbon monoxide in the liquid phase in contact with hydrogen flowing upwardly through a series of successive stages, each containing a catalyst bed either semi-stationary or di... | 01/26/1982 |
| 4293424 | Process for cleaning rolling lubricant Lubrication oils used in rolling strip and foil in the light metal industing are contaminated with fine metallic particles during rolling. The process described here allows these oils to be cleaned either continuously or in a batch process by adding a str... | 10/06/1981 |
| 4289583 | Oil reclamation device An oil reclamation device comprises a housing, filter, evaporator plate and heating assembly. The housing has a longitudinal axis and includes an oil inlet to receive oil to be reclaimed and an oil outlet to discharge reconditioned oil. Features of this i... | 09/15/1981 |
| 4272359 | Method and apparatus for re-processing waste oil A method of and apparatus for re-processing waste oil for the production of a fuel oil substitute are described. The waste oil is passed first to a solids separation zone and then to a three phase separator in which the oil is intimately contacted with wa... | 06/09/1981 |
| 4265733 | De-ashing lubricating oils In a process for reducing the concentration of ash-forming components in a lubricating oil wherein a feedstream comprising said lubricating oil and an aqueous ammonium salt treating agent is continuously passed into a first reaction zone wherein said trea... | 05/05/1981 |
| 4250021 | Treating used hydrocarbon lubricating oils Process for removing metal(s) and water from used hydrocarbon lubricating oil characterized in that the said used oil is treated with an aqueous solution containing a surfactant and anions which form an insoluble salt or insoluble salts with at least one ... | 02/10/1981 |
| 4227969 | Oil reclamation device An oil reclamation device comprises a housing, filter, evaporator plate and heating assembly. The housing has a longitudinal axis and includes an oil inlet to receive oil to be reclaimed and an oil outlet to discharge reconditioned oil. The filter is disp... | 10/14/1980 |
| 4224142 | Treatment of recycled ammonium sulfate-bisulfate solution Ammonium sulfate-bisulfate solution contaminated with metal and other ash producing contaminants is treated by adjusting the pH of the solution to the range that produces a precipitate of the contaminant by the addition of ammonia or ammonium hydroxide; c... | 09/23/1980 |
| 4189351 | Oil reclamation device An oil reclamation device comprises a housing, filter, evaporator plate and heating assembly. The evaporator plate includes upwardly projecting evaporation walls defining a plurality of curved vaporizing surfaces laterally displaced radially with respect ... | 02/19/1980 |
| 4179019 | Apparatus for reclaiming used lubricating oils A used lubricating oil reclamation apparatus in which filters, heat exchangers, a vaporizer unit, pumps and other necessary equipment are all contained in a wheeled cabinet. The oil to be reclaimed is pumped through a warming heat exchanger, a first filte... | 12/18/1979 |
| 4178202 | Method and apparatus for facilitating the disposal of cutting liquid A method of facilitating the disposal of waste cutting liquid consisting essentially of an emulsion of partly soluble oils and water comprises subjecting a trickling flow of the liquid to the action of a current of hot air at a temperature of from 80° to... | 12/11/1979 |
| 4108599 | High water content emulsion cleaning The present invention relates to a process of fabric cleaning utilizing a solvent emulsion which effectively combines the dissolving and suspending power of water for hydrophilic substances with the dissolving power of organic compositions for hydrophobic... | 08/22/1978 |
| 4033859 | Thermal treatment of used petroleum oils Used oil, such as automotive crankcase oil drainings from internal combustion engines, are pretreated by heating to above about 400°-800° F, and preferably between 600°-750° F, while an essentially liquid phase system is maintained at a pressure of ... | 07/05/1977 |
| 4032441 | Method for reclaiming used hydraulic fluid A method for reclaiming used, petroleum base, aircraft operational hydraulic fluids by a method which includes the sequential steps of settling, aerating, foam inhibiting, adding of only supplemental amounts of additive agents and fine particle filtering.... | 06/28/1977 |
| 4021333 | Method of rerefining oil by distillation and extraction Used oil is rerefined by distilling it to remove a volatile forecut followed by a fraction of lubricating viscosity; the latter is then extracted with an immiscible liquid extractant to remove impurities. As optional preliminary steps, the oil may be dilu... | 05/03/1977 |
| 4006084 | Oil reclaiming device A device for use with an internal combustion engine for reconditioning oil by removal of solid and liquid contaminants including a housing having an oil inlet at one end and an oil outlet at an opposite end and containing a filter for removal of solid mat... | 02/01/1977 |
| 3990963 | Process for regenerating used lubricating oils Used lubricating oils are first heated to 200°-500° C, optionally with added steam, and then filtered through a membrane such as an ultra-filtration membrane. The latter has preferably a cut range of from 5,000 to 300,000.... | 11/09/1976 |
| 3980551 | Refining of waste lube oil to prepare usable lubestock Waste lube oil is refined by treating it with hydrogen in an ebullated bed of catalyst particles and subjecting the liquid effluent to vacuum distillation or other equivalent separation procedures to produce a clean and usable lubestock and a heavy residu... | 09/14/1976 |
| 3954602 | Process for cleaning used oils A process for cleaning a used oil, in particular engine oil and industrial lubricating oil. The process comprises heat treating the used oil in a heat treatment zone at a temperature of 325°-400°C at a pressure of 1-6 bars for a period of at least 15 mi... | 05/04/1976 |
| 3930988 | Reclaiming used motor oil A process for reducing the ash content and the content of metals present in used motor oils by contacting the used motor oil with an aqueous solution of ammonium sulfate and/or ammonium bisulfate under conditions to react with the metal compounds present ... | 01/06/1976 |
