Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 5807486 | Process for the treatment of hazardous waste water There is disclosed a portable assembly for treating hazardous waste water having a plurality of paired filter units having filter mediums and operated at high filter rates to minimize solids build up wherein solids are caused to be smashed and broken by s... | 09/15/1998 |
| 5807490 | Method of separating polymers from mixtures thereof A method of separating two immiscible, melt-viscosity-differing thermoplastic polymer components from a mixed liquid stream thereof forms two discrete and continuous phases having a sheath/core configuration, wherein the sheath substantially contains the ... | 09/15/1998 |
| 5804079 | Systems and methods for reducing the number of leukocytes in cellular products like platelets harvested for therapeutic purposes Systems and methods separate whole blood containing leukocytes in a first separation chamber into a first layer comprising red blood cells, a second layer comprising a suspension of platelets, and an interface between the first and second layers. The syst... | 09/08/1998 |
| 5800720 | Spinning filter separation system for oil spill clean-up operation Oil spill polluted water is conducted under pressure in sequence through arator devices to collect and burn a polluted water mixture having its oil concentration increased by extraction of water therefrom during axial flow through the separator devices. ... | 09/01/1998 |
| 5800721 | Combined cardiotomy fluid and venous blood reservoir A combined cardiotomy and venous blood reservoir according to a preferred embodiment of the invention provides a separate in-flow path for both cardiotomy fluid and for venous blood, and includes a cardiotomy fluid filter element also serving as an initia... | 09/01/1998 |
| 5797328 | Device and method for purification and recirculation of cleaning agent in a printing machine The invention relates to a device and method for removal of impurities from, and recirculation of, cleaning agent in a printing machine. Contaminated cleaning agent is purified by passing it through a series of sedimentation devices. In these sedimentatio... | 08/25/1998 |
| 5788844 | Process for removing and recovering ammonia from organic metal extractant solutions in a liquid-liquid metal extraction process A process for removing and recovering ammonia from the organic extraction phase in a metal liquid-liquid extraction process in which at least one ammoniacal aqueous solution (either a leach feed solution containing the metal to be extracted or an aqueous ... | 08/04/1998 |
| 5789479 | Settled solids process for preparing polyester copolymer resin The present invention relates to a process for preparing a dispersion of high grade polyester copolymer resin in water comprising 1) combining a crude polyester copolymer resin, having particles of various sizes, with water; 2) heating and agitating the r... | 08/04/1998 |
| 5785869 | Method for creating a leukocyte rich sample from a mixed population of blood cells A method and apparatus for creating a leukocyte rich sample from a mixed population of blood cells. The method comprises the steps of: separating an amount of blood into layers that include a buffy coat layer having a mixed population of blood cells inclu... | 07/28/1998 |
| 5783084 | Process for the reclamation of process water from process wastewater generated in the battery manufacturing industry and other metals related industries A process wastewater treatment plant, and a process relating thereto, which converts process wastewater generated in battery manufacturing and the like into clean process water and sodium sulfate salt by treating the process wastewater to remove impuritie... | 07/21/1998 |
| 5783093 | Blood cell concentrates using a single solution for anticoagulation and preservation A method for preparing red blood cell concentrates uses a single additive solution composition having a reduced citrate concentration both for anticoagulation of whole blood and for preserving red blood cells in storage.... | 07/21/1998 |
| 5783096 | Method for treating wash water originating from the washing of sugar beets A description is given of a method for treating wash water originating from the washing of sugar beets. This wash water essentially comprises water, sand, sludge and sugar beet particles. The wash water is subjected to a treatment in a cyclone, in which t... | 07/21/1998 |
| 5783087 | Method and apparatus for isolation and purification of immune complexes A system and method for isolating and purifying complexes of biologically active compounds. The inventive system and method utilize a centrifugal filtration device employing a membrane having ligands that preferentially bind a biologically active compound... | 07/21/1998 |
| 5776354 | Use of a porous, particulate material in a packed filter bed for liquid/gas and/or liquid/liquid separation A method for the use of a porous, preferably dimensionally stable, particulate material in a packed filter bed for separating a disperse liquid phase from a gas and/or separating a disperse liquid phase from a liquid, with the average size of the particle... | 07/07/1998 |
| 5772901 | Oil/water/biocatalyst three phase separation process A method and an apparatus for separating a water/organic/solid emulsion, wherein the solid comprises particles having a length of about 50 μm or less, are disclosed. The method comprises the steps of (1) directing the water/organic/solid emulsion from an... | 06/30/1998 |
| 5772783 | Method for rejuvenating pressurized fluid solvent used in cleaning a fabric article Method and system of rejuvenating pressurized fluid solvents used for cleaning a substrate in a pressurized vessel. A primary flow of the pressurized fluid solvent is continuously cycled from the pressurized vessel through a series of filters to remove in... | 06/30/1998 |
| 5744048 | Clog resistant storm drain filter A removable storm drain filter to be used in combination with an absorbent media, and a catch basin having grated inlet and standpipe outlet to remove pollutants carried in surface drainage. The storm drain filter is designed to fit within a catch basin, ... | 04/28/1998 |
| 5744038 | Solvent extraction methods for delipidating plasma A separating device for extracting cholesterol from plasma uses a spinner to disperse plasma into an extracting solvent in the form of fine droplets to improve separation efficiency, thereby making it suitable for delipidating blood plasma. Blood plasma i... | 04/28/1998 |
| 5738796 | Method for separating components from a biological fluid The present invention provides for processing a biological fluid such as blood, to separate at least one component from the biological fluid, and to remove leukocytes from the separated component while returning the component depleted biological fluid to ... | 04/14/1998 |
| 5730885 | Screen packs for reducing gels in polypropylene copolymers The present invention teaches a method for reducing the number and size of polymeric gels in a polypropylene blend by filtering the blend through multiple filter screens during the extrusion of the blend.... | 03/24/1998 |
| 5728306 | Leukodepletion filter and method for filtering leukocytes from freshly drawn blood A leukodepletion filter is provided including glass fiber filter pads and non-woven polyester fiber filter pads sealed within a filter housing. The filter is designed such that a fluid, such as whole blood, packed red blood cells, platelets or plasma, is ... | 03/17/1998 |
| 5728305 | Waste water purification system Waste water is reclaimed for reuse by combined use of settling tanks, ozonation and filtration. The settling tanks remove substantial solid matter from the waste water. The waste water from the last settling tank is treated with ozone to remove contaminan... | 03/17/1998 |
| 5720885 | Process and device for the treatment and/or dewatering of sludge taken from waste water cesspools, especially small-scale sewage treatment plants Apparatus for treating and dewatering of sludge taken from small-scale sewage treatment plants. The apparatus, which preferably is mounted on a vehicle, incorporates chamber-type units for dewatering, which can be connected by way of feed and return pipes... | 02/24/1998 |
| 5714070 | Process for removing solvent and nitrocellulose residues from polyolefin shreds Processes are described for the removal of solvent and/or nitrocellulose residues from precleaned polyolefin, in particular from precleaned polyethylene recyclate shreds, whereby the polyolefin is either mixed with washing water, the solvent is expelled a... | 02/03/1998 |
| 5704989 | Closed loop surface cleaning system A method for removing contaminants from a surface such as pavement using a portable closed-loop system which is transported to the location to be cleaned by a vehicle. The method includes storing a volume of fluid in a clean tank, pumping the fluid to a c... | 01/06/1998 |
| 5705074 | Removal of acidic organic contaminants from refinery waste water A process is described whereby phenolics and other water soluble, organic materials are removed from certain aqueous refinery waste streams by an extraction process whereby the brine is contacted with a hydrocarbon solvent containing at least about 2% by ... | 01/06/1998 |
| 5702607 | On-site automated closed loop petroleum based hydrocarbon fluid filtration and recycling system An on-site automated closed loop petroleum based hydrocarbon fluid filtration and recycling system that continuously recycles a spent petroleum based hydrocarbon fluid and simultaneously continuously dispenses the recycled petroleum based hydrocarbon flui... | 12/30/1997 |
| 5698111 | Method of sterilizing animal scent by filtration A method of processing big game scent, such as deer lures, comprising the steps of filtering a mixture of urine and feces through a series of successively finer filters in order to remove contaminants and pathogenic bacteria from the scent without destroy... | 12/16/1997 |
| 5693232 | Method for collecting a blood component concentration A method separates blood by centrifugation in a rotating chamber into a first separated blood component, a residual blood fluid, and an interface between the first separated blood component and the residual blood fluid. The method withdraws the first sepa... | 12/02/1997 |
| 5690835 | Systems and methods for on line collection of cellular blood components that assure donor comfort Systems and methods convey anticoagulated blood suspension from a donor into a separation device for component separation. One or more components are retained for therapeutic use, while one or more are returned to the donor. The systems and methods monito... | 11/25/1997 |
| 5685987 | Method for recycling formalin A formalin fluid recycler has a combination triple pipe nozzle for introducing dirty fluid into the recycler and for expelling concentrate and permeate fluid therefrom. Dirty fluid is pumped through a strainer, filtration module and charcoal filter to pur... | 11/11/1997 |
| 5676840 | Waste-oil cleaning method and apparatus A waste-oil cleaning method includes filling a processing tank with waste oil, allowing non-oil liquids in the waste-oil to settle to the base of the tank, then withdrawing the settled non-oil liquids from the base of the tank. After these non-oil liquids... | 10/14/1997 |
| 5676849 | Method for enrichment of fetal cell population from maternal whole blood samples A method for enriching rare cell populations from a whole blood sample by separating rare cell fractions from whole according to the relative charge density and/or the relative binding affinity for a leukocyte depletion solid phase matrix. The enrichment ... | 10/14/1997 |
| 5673902 | Dual stage ceramic foam filtration system and method There is provided a dual stage ceramic foam molten metal filtration system and method. Coarse and fine filters are mounted adjacent to one another in a molten metal flow path. A convection preheat apparatus provides preheat for both filters. A vent struct... | 10/07/1997 |
| 5670060 | Method for treating a biological fluid including transition zone material A method for processing a biological fluid comprises separating a transition zone material from the biological fluid; processing the transition zone material to form a supernatant layer which includes platelets and a sediment layer which includes red bloo... | 09/23/1997 |
| 5665245 | Process for recirculating and purifying waste water from a vehicle washing installation A process for purifying waste water form a vehicle washing installation and returning the purified water to the installation is described. The process circulates the collected waste water by negative pressure generated by a water jet pump. The pump has a ... | 09/09/1997 |
| 5665247 | Process for sealing microplates utilizing a thin polymeric film A sealing member for a multi-well microfiltration plate comprises a flexible sealing material which, in response to the application of differential pressure, will flex or collapse in the direction of the filtration along the contour of each individual wel... | 09/09/1997 |
| 5662810 | Method and apparatus for efficiently dewatering corn stillage and other materials A new process and apparatus efficiently dewater aqueous solids residual after fermentation and distillation, such as corn stillage. The feed stream of aqueous solids slurry is fractionated into two or more sub-streams in such a way that one of the sub-str... | 09/02/1997 |
| 5662813 | Method for separation of nucleated fetal erythrocytes from maternal blood samples A charge-flow separation apparatus (CFS) and method for enriching rare cell populations, particularly fetal cells, from a whole blood sample by separating the rare cell fractions from whole according to the relative charge density and/or the relative bind... | 09/02/1997 |
| 5656174 | Dredging system and method The present invention is directed to a continuous, portable dredging system that employs a series of screens and gravity separation devices with flocculation to remove sediments from the dredged slurry. The system produces a treated water stream having lo... | 08/12/1997 |
