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| Number | Title | Issue Date |
| 4178247 | Oil spill retrieval system An oil spill retrieval system for retrieving spilled oil from the surface of a body of water and including a boat having means for collecting the oil from the water surface and having means for processing the collected oil and water collected therewith to... | 12/11/1979 |
| 4152262 | Filtration and purification apparatus A filtration and purification apparatus for use in water lines of both domestic and industrial applications, wherein water must be purified and filtered prior to use--particularly with respect to human consumption thereof. The filter/purifier comprises a ... | 05/01/1979 |
| 4151092 | Portable water filter A portable water filter has a first cylindrical container for holding a quantity of liquid to be treated. Included in the filter is a water filter cartridge which is mounted with respect to the first container for treating liquid which is pumped through t... | 04/24/1979 |
| 4110218 | Liquid cleaning apparatus having cyclonic separators The liquid which is delivered to cyclonic separators for final cleaning is precleaned twice, first in a drag tank and then by a magnetic separator. The dirty underflow from the cyclonic separators is subjected to two stages of aftercleaning, first in a se... | 08/29/1978 |
| 4104167 | Apparatus for purifying waste waters Apparatus in which contaminants from the raw or waste waters are removed by combined biological-chemical degradation of such contaminants comprises first, second and third chambers. An aeration zone is provided in the first chamber. A slanted plate is loc... | 08/01/1978 |
| 4104164 | Device for treating waste water A system for continuously treating waste water from laundries, car washers and like cleaning establishments to recover water soap, detergents, and other chemicals. The process of using the system is carried out by flowing the untreated water through sand ... | 08/01/1978 |
| 4093544 | Method and apparatus for ammonia-nitrogen removal by vacuum desorption A method and apparatus for removing ammonia nitrogen from wastewater at any given temperature. The apparatus and method includes the concept of increasing the pH of the wastewater to a highly basic condition, exposinng the wastewater to a vacuum having an... | 06/06/1978 |
| 4066549 | Apparatus for the precipitation of human blood plasma components A process and apparatus for the precipitation of human blood plasma components characterized in that the initial blood plasma and the precipitating agent are continuously introduced into a precipitation container in an adjusted relationship but separated ... | 01/03/1978 |
| 4049552 | Ozone generating system A housing has an interior casing receiving a coolant. This casing is associated with a forced cooling system and has open ended tubular portions therethrough formed of electrically conducting metal. Glass ozone generating tubes are removably supported in ... | 09/20/1977 |
| 4042497 | Septic system with level control Liquid waste material passes from a septic tank to a holding tank prior to being pumped into a tiled drain field. The liquid waste material is only pumped into the drain field when the liquid saturation of the soil in and around the drain field is below a... | 08/16/1977 |
| 4036606 | Method of cleaning gases and apparatus therefor Method and apparatus for cleaning gases, especially those generated by the pressurized gasification of coal, to remove impurities therefrom, especially tar, dust and salts, in which the gases are washed with a liquid, preferably water, in a scrubbing unit... | 07/19/1977 |
| 4028242 | Method of thermal disinfection of sewage and plant realizing same Sewage is heated to a temperature above 100° C. in two steps. In the first step, sewage is heated to a temperature not greater 100° C. and then conducted into the nozzle of a jet apparatus into which heat-carrier steam is also injected so that the sewag... | 06/07/1977 |
| 4019986 | Portable water purifier A portable water purifier includes a portable ozone generator and water container and a flexible tube conducting ozone from the generator to the container. A filter-bubbler is used to bubble ozone into water in the container and then to filter the purifie... | 04/26/1977 |
| 3998740 | Apparatus for treatment of textile desizing effluent Apparatus is disclosed for treating textile desizing effluent so as to provide effective pollution abatement, and to render feasible the recovery of sizing material from the effluent for reuse as well as the conditioning of the effluent so that it may be ... | 12/21/1976 |
| 3971720 | Method of and apparatus for processing cattle excrement A method of and apparatus for separating from ruminant animal feces the undigested fibrous material that is preponderantly short pieces which consist of bundles of capillary tubes. The feces are mixed with urine, water from animal washing and preparation ... | 07/27/1976 |
| 3965004 | Removal of contaminants from water In a system for removing oil from oily water which employs an oil droplet coalescer, a ceramic dewaxer is inserted before the coalescer to remove waxes, asphalts, and similar materials which would otherwise quickly clog the fine holes of the coalescer. Th... | 06/22/1976 |
| 3963612 | System of water purification and product distribution A system of repetitively replenishing a reserve supply in a reservoir of nearly pure product water discharged from a reverse osmosis module that is mounted for reciprocation, the input of which is connected to a conventional water service line and the out... | 06/15/1976 |
| 3956130 | Filtering apparatus An automatic filtering apparatus which provides an aliquot of filtrate of a particular quantity desired is provided. A solid-liquid mixture is introduced to a filter means under positive air pressure to provide the liquid filtrate. The filtrate flows into... | 05/11/1976 |
| 3941698 | Grit selector A grit selector having an upper settling chamber and a lower grit storage chamber. The settling chamber communicates with the storage chamber through a relatively small opening in a flat transition surface therebetween. Rotating paddles critically positio... | 03/02/1976 |
| 3931009 | Water purification apparatus and timing device for initiating a backwashing cycle A water purification apparatus is disclosed having an aeration chamber for aerating unpurified water from a source. A filter chamber is provided beneath the aeration chamber containing granular media for filtering the aerated water and having spaced apart... | 01/06/1976 |
