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| Number | Title | Issue Date |
| 5232590 | Water filtration apparatus Water filtration apparatus with an internal by-pass for conducting water from a water source to a storage tank and from the storage tank through filter media to a tap. The apparatus includes a filter housing with an inlet port, and outlet port, and a comb... | 08/03/1993 |
| 5230803 | Ground- and wastewater purification There is disclosed a process for purifying ground- and wastewaters, which comprises subjecting said waters to a membrane separation process between a biological treatment step and adsorption on activated carbon.... | 07/27/1993 |
| 5227076 | Method and apparatus for thickening fine particle suspensions The invention relates to a method for thickening and clarifying fine particle suspensions, wherein the suspensions are thickened and clarified in combination with a back-pulse filtration process. The method is characterized by partially submerging one or ... | 07/13/1993 |
| 5227071 | Method and apparatus for processing oily wastewater A five stage treatment system for treating oily wastewater to fit it for discharge to surface waters comprising a coalescer for separating free oil, an ultrafiltration unit for separating emulsified oil, an activated carbon filter for separating residual ... | 07/13/1993 |
| 5221473 | Filter cartridge assembly for a reverse osmosis purification system A filter cartridge is provided for use in a reverse osmosis water purification system or the like. The filter cartridge includes a reverse osmosis membrane for converting a feed water inflow to a relatively purified water supply having contaminants substa... | 06/22/1993 |
| 5221480 | Method and apparatus to detoxify aqueous based hazardous waste A process and apparatus is provided in which aqueous based wastes are processed to remove solids, decant phase separated product, optimize chemically for solvent specific extraction, remove toxic metals and organics via solvent extraction and remove resid... | 06/22/1993 |
| 5211850 | Plasma filter sorbent system for removal of components from blood A system and method of achieving both convective and diffusive transport of plasma across a membrane accompanied by the selective removal of plasma components using sorbents followed by reinfusion of the purified plasma in a blood circulation system is ac... | 05/18/1993 |
| 5198116 | Method and apparatus for measuring the fouling potential of membrane system feeds The optimum antifoulant concentration and cleaning interval for reverse osmosis membranes is determined by providing samples of a liquid to be purified in a reverse osmosis system, the samples having a range of antifoulant concentrations added. The zeta p... | 03/30/1993 |
| 5194157 | Blood purifying equipment particularly for the treatment of patients suffering from renal insufficiency, and a method of producing a reinfusion liquid for haemodiafiltration (HDF) Blood to be purified is passed through a haemofiltration element and a haemodialysis element in cascade and the ultrafiltrate output from the haemofiltration element is passed through a filter such as an activated carbon filter, preferably with uncoated a... | 03/16/1993 |
| 5186822 | Wave powered desalination apparatus with turbine-driven pressurization A desalination apparatus including pressure responsive desalination means, a storage tank and conduit means connecting such storage tank to a pump mounted in a caisson defining a resonant chamber having an opening in one side thereof for receiving the inc... | 02/16/1993 |
| 5174901 | Liquid purifying system In a system for purifying liquid, a method is provided wherein the liquid is pretreated by passing it through a sand filter water softener and carbon filter for removal of hardness and particulate matter. The liquid is then pumped through a reverse osmosi... | 12/29/1992 |
| 5171456 | Automated blood component separation procedure and apparatus promoting different functional characteristics in multiple blood components Method and apparatus are provided for machine separation of blood into blood components, wherein a preselected fluid such as anticoagulant is added to at least two different locations through the fluid flow path of the set, in order to promote the differe... | 12/15/1992 |
| 5167826 | Engine collant recycling apparatus and process An apparatus and a process for recycling used engine coolant employs a reverse osmosis process for separating ethylene glycol from a concentrate coolant solution. The engine coolant concentrate is pre-filtered through a series of filters and pressurized p... | 12/01/1992 |
| 5167816 | Sterile coupling device for drug container The present invention is directed to a device for sterile coupling and decoupling of a first solution system to a second solution system. The first system has a resealable member so as to allow access into the system. The device includes a housing for rec... | 12/01/1992 |
| 5160608 | High efficiency water treatment system A system for treating a portion of water passing through a pressurized water conduit. The system comprises water treatment means such as a reverse osmosis module. An upstream branch line communicates between the pressurized water conduit and the inlet of ... | 11/03/1992 |
| 5160430 | Car wash system using reverse osmosis concentrate for initial rinsing and permeate for final rinsing A rollover type car wash and rinse machine which uses permeate from a reverse osmosis unit for a final rinse operation. The machine is operator controlled to wash and initially rinse cars with a spray arch using raw water and concentrate from the reverse ... | 11/03/1992 |
| 5147533 | Sink with water purification system thereunder A water purification system includes a storage tank, a prefilter, a reverse osmosis element, a deionization module, a feedwater connection, a brine discharge line, and an electronic memory panel, all of which are incorporated within mounted or mountable o... | 09/15/1992 |
| 5141490 | Single-needle type plasma separation apparatus and plasma collection apparatus The single-needle type plasma separation apparatus of the present invention comprises a blood collection needle; a blood collection container; a first blood transportation tube connecting the blood collection needle to the blood collection container; a bl... | 08/25/1992 |
| 5139675 | Filtration cleaning system A dialyzer reprocessing device and method are disclosed. The device and method are of the type which include a dialyzer and means for cleaning the dialyzer by treatment with fluids. Included is a treating device for modifying the fluids prior to introduct... | 08/18/1992 |
| 5135667 | Method and apparatus for administration of anticoagulant to red cell suspension output of a blood separator Method and apparatus for machine separation of blood and blood components that utilizes improved administeration of anticoagulant to the red cell suspension output. Anticoagulant is added to incoming whole blood in an amount sufficient to prevent clotting... | 08/04/1992 |
| 5124033 | Ultrapure water producing system This disclosure relates to an ultrapure water producing system having a primary ultrapure water system including a pretreatment process into which raw water is fed, and a primary ultrapure water device connected to the outlet of the pretreatment process. ... | 06/23/1992 |
| 5122265 | Compact reverse osmosis system with cold water flush A reverse osmosis purification system is operated on a ratio of approximately 1 to 1 to 2 to 1 waste water to product water. The system uses the cold water outlet and a cold water path which extends through the RO membrane to remove non-migrating particle... | 06/16/1992 |
| 5114580 | Combined hemofiltration and hemodialysis system A hemodialysis system has a blood circuit and a hemofiltrate circuit interconnected at a hemofilter and an air collection chamber. If an infusion of sterile fluid to the returning blood is needed during the dialysis treatment, filtrate in the filtrate cir... | 05/19/1992 |
| 5112480 | Blood reservoir A blood reservoir serves to remove air bubbles from blood and maintain a desired amount of blood in an extracorporeal blood circulation circuit. The blood reservoir has a blood inlet chamber having blood inlet ports, a blood storage chamber having a blood... | 05/12/1992 |
| 5112489 | Process and unit for clarification of liquids In a process for clarification of liquids, especially raw juice by continuous crosscurrent filtration, which for improvement of the filtration output is run with a high solid portion in the retentate circulating circuit, during the starting phase an addit... | 05/12/1992 |
| 5108590 | Water dispenser Disclosed is a self service water dispensing apparatus especially adapted to be located inside a grocery store. This apparatus includes a housing which provides a rigid support structure having a base section which has integral therewith a water storage t... | 04/28/1992 |
| 5096590 | Concentration of solution by the reverse osmosis process Provided is a multistage method and apparatus for concentrating a solution by reverse osmosis, comprising the steps and means for: maximizing the concentration of absolute in a solution in a multistage apparatus having only standard capacity pumps, includ... | 03/17/1992 |
| 5093006 | Liquid separator Liquid separator and method of separating oil and water components of a liquid mixture wherein the oil component is made up of droplets of a less dense phase in a more dense water phase, using a hydrocyclone for separating the components. A less dense com... | 03/03/1992 |
| 5087370 | Method and apparatus to detoxify aqueous based hazardous waste A process and apparatus is provided in which aqueous based wastes are processed to remove solids, decant phase separated product, optimize chemically for solvent specific extraction, remove toxic metals and organics via solvent extraction and remove resid... | 02/11/1992 |
| 5083442 | Refrigerator with purified water supply A refrigerator is combined with a reverse osmosis water purification system so that purified water is available at an ice-maker and water tap forming part of the refrigerator. The water is also chlorinated upstream of the reverse osmosis filter and dechlo... | 01/28/1992 |
| 5082557 | Control head for water purifier A water purifier includes a canister containing a reverse osmosis filter unit and threadedly engaged with a control head which is adapted to be coupled to a source of tap water, to a purified water storage tank, to a faucet or other remote usage location ... | 01/21/1992 |
| 5080795 | Supported chiral liquid membrane for the separation of enantiomers The invention relates to a process for the high yield, cost efficient means of separating enantiomers. The process utilizes a supported liquid membrane and a chiral carrier which selectively complexes with one of the two enantiomeric optical configuration... | 01/14/1992 |
| 5076913 | Fluid purifying apparatus and method of purifying fluids In a liquid purification system, a plenum defining walled housing including a blower and walled drain receptacle having protuberances to space the receptacle from the housing wall to define a lineally extending exhaust passage therebetween sized to provid... | 12/31/1991 |
| 5075002 | Fluid pick-up assembly An improved fluid pick-up assembly for the control of the flow of fluids upwardly through a pick-up tube from a fluid reservoir is disclosed comprising, a slidable tubular gate, disposed over a hollow tube having fluid inlet voids therein for fluid flow f... | 12/24/1991 |
| 5069780 | Ultrafiltration device and process A portable ultrafiltration device is disclosed comprising a prefilter, pump, membrane filter cartridges, temperature sensors, pressure sensors, process interdiction and control means placed to detect temperature and pressure variations of a feed mixture b... | 12/03/1991 |
| 5059317 | Transportable apparatus for producing drinking water An installation for filtering drinking water out of contaminated water, which can be used in many different situations, as it consists of a hydrocyclone, a micro filter unit, a unit for reverse osmosis, a mixed bed ion exchange, a re-salting unit, a unit ... | 10/22/1991 |
| 5055198 | Autologous blood recovery membrane system and method An apparatus for recycling autologous blood from a patient for reinfusion back to the patient comprising suction means, admixing means for admixing aspirated blood with a washing fluid, filtering means for filtering the admixture through an emboli filter ... | 10/08/1991 |
| 5053143 | Fluid purifying apparatus and method of purifying fluids A fluid purification system including a filter membrane, a down stream storage receptacle and a down stream tap for the fluid, the system further including ultra violet microbial reduction treating circuits upstream the storage receptacle and a microbial ... | 10/01/1991 |
| 5043066 | Fluid purifying apparatus and method of purifying fluids In a fluid purification arrangement for a reverse osmosis treatment system which system includes a ported header with spaced port connections, a fluid impervious treatment container with at least one compartment and a matching ported header mounted theret... | 08/27/1991 |
| 5039411 | Fluid purifying apparatus and method of purifying fluids In a fluid storage arrangement for a fluid storage system including a plenum defining housing having a collapsible - expansible fluid impervious storage bag and a planar switch responsive to preselected positions of the storage bag to control the volume o... | 08/13/1991 |
