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...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 |
| 7354515 | Fluid concentrator A concentrator is used for concentrating a fluid, particularly a plasma component out of blood, for treatment of a patient. The concentrator apparatus includes a main housing defining a centrifuge chamber, that also holds the filter. The concentrator allows viewing ... | 04/08/2008 |
| 7320750 | Centrifuge with controlled discharge of dense material A centrifuge with controlled discharge of dense materials disclosed. A centrifuge includes a fluid separation wall placed within a sleeve to form a containment zone therebetween. The fluid separation wall aligns and rotates parallel to an axis of rotation. A recepta... | 01/22/2008 |
| 7115202 | Method for the separation of multi-phase mixture and decanting centrifuge system for carrying out said method A method for separating a multi-phase mixture (50) into a liquid phase (54) and a dry phase (52) with a specified dry matter concentration. A decanting centrifuge (100) with an annular immersion disk (14) and a weir arranged at an ... | 10/03/2006 |
| 7081206 | Filter apparatus and method with centrifugal separator for removing contaminants from a fluid The filter removes volatile, particulate and water-based contaminants from a fluid, such as lubricating oil, of a different density than the contaminants. The device has a cone shaped, jet-propelled, helical-spiral wiper rotor creating centrifugal forces that separa... | 07/25/2006 |
| 6923329 | Screen apparatus A screen apparatus includes a tank, a first cylidrical screen disposed inside the tank to form a first chamber, and a second cylidrical screen disposed outside the first cylindrical screen. The second cylindrical screen defines a second′ chamber facing the first c... | 08/02/2005 |
| 6755969 | Centrifuge A centrifuge with specific wall and opening shapes for receptacles is disclosed. A centrifuge may include a fluid separation wall aligned substantially parallel to an axis of rotation and include an inner surface, a void area, and an outer surface. The inner surface... | 06/29/2004 |
| 6488849 | Rotating device for continuously filtering a liquid such as a solution containing a precipitate The present invention relates to a rotating device for continuously filtering a liquid such as a solution containing a precipitate. According to this invention, the device comprises a cylindrical, horizontal-axis drum of revolution, rotated by a drive system, ... | 12/03/2002 |
| 6312610 | Density screening outer wall transport method for fluid separation devices A method for segregating and transporting heavy particles thrown by centrifugal force from a flowing, spinning column of liquid or gas, whereby an outer cylinder whose inner walls present or face the center core with horizontal, circular bands of pyramida... | 11/06/2001 |
| 6223756 | Apparatus for degreasing solid parts An apparatus for degreasing solid and/or mass-produced parts, such as small metallic parts comprises a drum with a perforated drum wall rotatable and drivable around a vertical axis. A charge opening is furnished at the top and a discharge opening furnish... | 05/01/2001 |
| 5989431 | Method and apparatus for DNA extraction Methods and apparatus for the extraction of DNA from a suspension of cells are described. The methods utilise a hollow membrane filter to separate DNA from cellular debri after lysis of cells. The suspension of cells can be a suspension of cultured cells ... | 11/23/1999 |
| 5707519 | Centrifugal oil filter with particle retention A centrifugal oil filter includes a housing having a rotatable bowl disposed in a first fluid chamber and rotatably disposed about a shaft extending through the first fluid chamber. The rotatable bowl has a flow directing member connected generally at the... | 01/13/1998 |
| 5667680 | Arrangement in liquid filters in which the filtrate is divided in two fractions A liquid filter comprises a filter rotor with filtering elements and a container for the filtrate. The filtrate is divided in two fractions, a coarse pre-filtrate derived from that side, where the rotor dives into the liquid, and a clear filtrate derived ... | 09/16/1997 |
| 5635065 | Shavings centrifuge A centrifuge for separating liquids and solids from various materials, including a rotatably driven receiving drum with a raisable and lowerable lift bottom arranged in a liquid-tight basin, and raisable and lowerable material guide surfaces arranged to b... | 06/03/1997 |
| 5616245 | High gravity separator A separator includes a housing, a basket rotatably mounted in the housing and a movable weir member. The basket has an upstream end portion, a downstream end portion and an intermediate tubular portion that includes or forms a screen deck. The weir member... | 04/01/1997 |
| 5472603 | Analytical rotor with dye mixing chamber The present invention provides an analytical rotor which holds a fluid in a chamber, typically to allow mixing with a reagent, and transfers the fluid to a receiving chamber in the rotor. The rotor comprises a holding chamber having an single exit duct an... | 12/05/1995 |
| 5458776 | Sand dewatering centriguse A centrifuge for dewatering a fluent aggregate material such as sand. Sand slurry is conducted into a rotating cylindrical drum which has a perforated lateral wall against which a screen is placed. The drum is oriented with the axis disposed vertically. W... | 10/17/1995 |
| 5401407 | Rotary screen device Apparatus for continuously separating relatively coarse particles from a suspension of a mixture of particles in a liquid, wherein the suspension is caused to pass through a screening medium which is rotating in its own plane and wherein the screening med... | 03/28/1995 |
| 5156751 | Three stage centrifuge and method for separating water and solids from petroleum products A three stage centrifuge especially adapted to the separation of oil, water, and solid particles in an emulsion. As an example, the centrifuge may be used to separate sediment and water from a petroleum product such as crude oil. The three stage centrifug... | 10/20/1992 |
| 5149432 | Centrifuge for separating liquids of different specific gravities A centrifuge for separating liquids, e.g., oil from water. The centrifuge basically comprises a housing having first and second cavities, and a liquid conveying wall disposed over a bowl arranged to be rotated about a central axis. The bowl includes an an... | 09/22/1992 |
| 5147277 | Power-efficient liquid-solid separating centrifuge A power-efficient liquid-solid separating centrifuge is disclosed which has power recovery apparatus on the bowl-head of a rotary bowl including a plurality of liquid flow passageways in fluid communication with transfer ports in the bowlhead of the rotar... | 09/15/1992 |
| 5053127 | Continuous centrifugation system and method for directly deriving intermediate density material from a suspension A system for continuously esparating lighter and intermediate density matter, such as plasma rich in platelets from whole blood moves blood through a diverging centrifugation gap between inner and outer walls of a rotor rotating about a central axis withi... | 10/01/1991 |
| 4944883 | Continuous centrifugation system and method for directly deriving intermediate density material from a suspension A system for continuously separating lighter and intermediate density matter, such as plasma rich in platelets from whole blood moves blood through a diverging centrifugation gap between inner and outer walls of a rotor rotating about a central axis withi... | 07/31/1990 |
| 4895666 | Centrifuge with two withdrawal chambers A centrifuge apparatus and a method of filtration are described. The centrifuge has radial and lateral filtration surfaces and separate discharge chambers for each. The lateral filter is located at an imperforate radial distance from the radial filter. Th... | 01/23/1990 |
| 4882094 | Separation system for dewatering radioactive waste materials Disposal container structure for the disposal of waste radioactive materials includes inner structure comprising a cover member with an inlet port and an annular seal surface portion, and depending filter structure attached to the cover structure that inc... | 11/21/1989 |
| 4717485 | Multi-phase separator with porous filter disks An apparatus for separating multiple phases of solids or fluids includes an exterior housing having an interior chamber. A plurality of porous filter disks is positioned within the interior chamber and have a common central passage. The disks are capable ... | 01/05/1988 |
| 4675117 | Method of separating blood and apparatus for carrying out the method Method of separating blood, in particular for recovering thrombocytes and/or leucocytes, the whole blood coming from the donor being separated in a separation means of a centrifuge into an erythrocyte fraction, cell-poor plasma, a thrombocyte fraction and... | 06/23/1987 |
| 4640770 | Apparatus for extracting water from solid fines or the like A batch-type centrifugal system utilizes a gimbal-like suspension at the end of a rotating shaft distal an attached bowl at the other end of the shaft. The shaft rotates within an elongated bearing which is supported proximal the bowl by a support which i... | 02/03/1987 |
| 4585558 | Separation system A separation system for dewatering radioactive waste materials includes a disposal container, drive structure for receiving the container, and means for releasably attaching the container to the drive structure. Separation structure disposed in the contai... | 04/29/1986 |
| 4485646 | Apparatus for washing fiber stock Apparatus for washing fiber stock, comprising a substantially horizontally disposed rotating screen drum, means for supplying fiber stock to one end of said screen drum for passage along the screen surface through said screen drum, means for removing fibe... | 12/04/1984 |
| 4446021 | Filter-medium support plate for centrifugal filter A centrifugal filter has a centrifuge drum rotatable about an axis and provided with a plurality of sieve support plates lining the drum. Each of the plates is generally flat and rectangular and has a radially inwardly directed inner face. They are each f... | 05/01/1984 |
| 4362620 | Partitioned centrifuge A centrifuge for the separation of materials having different densities such as solids and liquids or liquids of different densities has partitions therein disposed generally perpendicularly to the material flow within the centrifuge which form a series o... | 12/07/1982 |
| 4361490 | Process for centrifugal separation and apparatus for carrying it out, applicable to a mixture of phases of any states The invention relates to a process for centrifugal separation and to an apparatus for carrying it out, applicable to a mixture of phases of any states, said apparatus comprising, disposed coaxially and moved in rotation in a fixed enclosure, a fan adapted... | 11/30/1982 |
| 4325825 | Separator A separator for separating liquids immiscible with each other and containing solids heavier than the heavier liquid, includes a rotating conic drum into which the liquids are injected. The drum has a circumferential wall formed of two oppositely-directed ... | 04/20/1982 |
| 4302332 | Centrifugal thickener A centrifugal thickener comprising a truncated-cone shaped rotary barrel and a filter arranged along the inner surface of the rotary barrel, the rotary barrel having a vertical angle, of a truncated-cone shape formed by the internal surface thereof, of 40... | 11/24/1981 |
| 4244916 | Device for conditioning a sample of liquid for analyzing with internal filter The device for conditioning a sample of liquid for medical analysis which comprises a plurality of calibrated peripheral cells connected to a central receptacle by way of ducts including an air inlet orifice for conveying the sample from the receptacle to... | 01/13/1981 |
| 4190530 | Centrifugal method and apparatus for processing fluid materials Samples to be analyzed, such as physiological fluids (blood, urine, etc.) may be processed using centrifugal techniques. The sample is centrifugally passed through a separation column to extract the desired component from the aqueous phase. Next, the extr... | 02/26/1980 |
| 4122014 | Centrifuge for removing liquid media adhering to chips, turnings, borings or the like A centrifuge for removing liquid media adhering to chips, turnings, borings or the like. The centrifuge, which is supplied from above, includes a rotatable sieve drum having its own drive system and an inlet for the material which is to be processed. A di... | 10/24/1978 |
| 4119542 | Centrifugal separator A centrifugal separator comprises a follow rotor which is formed with a row of pores arranged circumferentially of the rotor and perforated, cylindrical film detachably received on the inner peripheral surface of the rotor. A mass of a semifluid material ... | 10/10/1978 |
| 4107041 | Electromatographic separating apparatus and system A continuous chromatographic separation is effected by a column packed with finely divided chromatographic particles, the nature of which depends on the materials to be separated. In the case of liquid systems, the cylinder containing chromatographic pack... | 08/15/1978 |
| 4101421 | Centrifuge drum with lateral filtration A centrifuge for the separation of solids from liquids has a centrifuge drum rotatable about a substantially horizontal axis and formed, in addition to the filtering periphery, with a perforated ring annular disk transverse to this periphery for increased... | 07/18/1978 |
