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| Number | Title | Issue Date |
| 4002562 | Oil emulsion processing A method for processing an oil-water emulsion to remove oily material therefrom comprising forming a mixture of the oil-water emulsion with liquid amine, in which oils of the emulsion are soluble and having an inverse critical solution point with water, a... | 01/11/1977 |
| 4001115 | Filtration system with storage and dilution reservoirs A method of clarifying contaminated liquid through the use of a storage reservoir for containing high volume surges of contaminated influent and chemically treating the influent passed thereinto and a dilution reservoir for selectively transferring the co... | 01/04/1977 |
| 3998735 | Apparatus and method for separating a mother liquor into a concentrated particulate fraction and a filtrate fraction An apparatus provides for continuous filtration of a mother liquor and continuous removal of solids from the filter element so that the apparatus need not be shut down for cleaning or replacement of the filter element. The solids are separated from the mo... | 12/21/1976 |
| 3996136 | Pump-filter for bilge water A housing for a bilge pump-filter has a lower part in which oil and like light pollutants are separated from the polluted water. A pump has its intake connected to the lower region of this lower part and its output connected to an upper compartment of a c... | 12/07/1976 |
| 3996015 | Catalytic reactor with dirt trap An apparatus for contacting a fluid stream with a bed of catalyst wherein solid particulate matter is removed from the fluid stream before contact with the catalyst bed. The fluid stream is tangentially discharged into a circular trough located in an uppe... | 12/07/1976 |
| 3989628 | Degritting and fiber removal system Apparatus for removing grit and fiber from waste activated sewage sludge prior to introduction into a centrifuge for further separation. Grit removal is accomplished by hydrocyclones and fiber removal is carried out on a 300° screen. The hydrocyclones an... | 11/02/1976 |
| 3975273 | Two-stage fluid filter A two-stage fluid filter such as an automotive oil filter. The two-stages of filtering media are mounted inside a conventional cylindrical housing forming fluid inlet and outlet ports in one end thereof. One stage of the filtering media comprises an annul... | 08/17/1976 |
| 3974073 | Coal liquefaction Insoluble material is separated from a coal liquefaction product by gravity settling in at least two gravity settlers, with overflow from a previous settler being used as feed to the subsequent settler. A promoter liquid having characterization factor of ... | 08/10/1976 |
| 3972816 | Oil extractor Method and means for separating emulsified and entrained oils from water, machine coolants, and substantially any other liquid comprising initially directing a flow stream into an inlet trap for removing relatively large particles from the flow stream, pa... | 08/03/1976 |
| 3959126 | Sewage handling and disposal process for chloride (NaCl) contaminated sludges A method for the treatment and disposal of sewage sludges containing chlorides (NaCl) as from infiltrating salt water, which involves heat treatment capable of producing readily disposable sludges, due to the resulting destruction of pathogenic organisms ... | 05/25/1976 |
| 3950562 | Process and apparatus for removing ash and inorganic compounds from cattle manure In reclaiming nutrients from manure, steps are taken to remove both insoluble and soluble ash components, thereby preventing their buildup to possibly dangerous levels when the reclaimed nutrients are used as recycled feed. After initial milling of the ma... | 04/13/1976 |
