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 |
| 7299932 | Oil filter An oil filter is provided which comprises a housing main body, a cover attached to the housing main body on the lower side thereof, an inner tubular member axially movably disposed in a recessed portion of the housing main body, a seal member interposed between the ... | 11/27/2007 |
| 7288189 | Multi-faceted intake filter for an aquarium A multi-faceted intake filter for an aquarium includes a top surface portion, a bottom surface portion and a plurality of side surface portions that collectively define a filter body is formed from a compressible foam. The intake filter also includes a bore that ext... | 10/30/2007 |
| 7232034 | Oil filter An oil filter is provided which comprises a housing main body, a cover attached to the housing main body on the lower side thereof, an inner tubular member axially movably disposed in a recessed portion of the housing main body, a seal member interposed between the ... | 06/19/2007 |
| 7094344 | Filter device The present invention relates to a filter device for removing impurities contained in liquid. A filter housing 18 is provided with a container for accommodating a filter bag 2 therein, a deposit recovery tank 3 for recovering a deposit and a flo... | 08/22/2006 |
| 7090773 | Coaxial full-flow and bypass oil filter An improved combination full flow bypass oil filter is presented where the output of the bypass filter is obtained by non-venturi means and the extremely clean bypass filter output is measurable at all engine oil pressures. The bypass filter output is not blended wi... | 08/15/2006 |
| 7018528 | Portable purifying system A portable purifying system for improved filtering and/or separating of cleaning solutions such as solvents, particularly those used in parts washers. The purifying system utilizes a removable reservoir to provide a smaller reservoir within a larger reservoir such a... | 03/28/2006 |
| 6932899 | Pool skimmer basket kit A pool skimmer basket kit for cleaning pool water is provided, which includes: a first skimmer basket having a peripheral wall portion and a bottom wall portion, each wall portion of the first skimmer basket defining therein a plurality of perforations of a first si... | 08/23/2005 |
| 6758982 | Integrated debris management method A fluid filtration system of well workover fluids, the system comprising: a first settling tank which stores fluid; a second settling tank which stores fluid; a low pressure pump in fluid communication with the first and second settling tanks; a low pressure filter ... | 07/06/2004 |
| 6666968 | Fluid filtration apparatus An oil filter assembly has an outer canister in which full flow and bypass flow filtration sections are operatively housed in a nested relationship. Oil forced into the canister has imparted thereto a vortex flow pattern which forces contaminant particles... | 12/23/2003 |
| 6641730 | Integrated debris management system A fluid filtration system of well workover fluids, the system comprising: a first settling tank which stores fluid; a second settling tank which stores fluid; a low pressure pump in fluid communication with the first and second settling tanks; a low press... | 11/04/2003 |
| 6616834 | Wastewater processor A wastewater treatment apparatus comprised of a water inlet 10, a filter component comprised of a series of filters 20, 30, 40 and settling ing areas 12, 22, 32 over a grade, and a series of separator tanks, 42, 52 connected by a lift tube 54 for removal ... | 09/09/2003 |
| 6489132 | Methods and apparatus for determining specific analytes in foods and other complex matrices Methods and apparatus for qualitatively or quantitatively determining one or more analytes in matrices such as foods, biological fluids, etc. An embodiment for determination of a single analyte comprises a sample receiving vessel, a first membrane and a r... | 12/03/2002 |
| 6488848 | Cleanable filter with ported cylinder adjacent screen A reusable filter for mounting on an engine is disclosed herein. The filter includes cylindrical reusable filter mounted in a housing. The reusable filter includes an outer screen, an inner screen, and a ported cylinder between the outer and inner screens... | 12/03/2002 |
| 6365045 | Apparatus for use in a sewage treatment plant An apparatus for use in a sewage treatment plant comprises a settlement tank, an inlet channel for delivering an input sewage flow to the settlement tank, and a screen arrangement having a continuous belt screen for capturing screenings contained within t... | 04/02/2002 |
| 6338796 | Filter A filter for use in a fuel injection device, the filter having a bore extending along at least a part of its length and comprising a plurality of channels formed in its outer surface, the channels defining, with a housing part for the filter, passages for... | 01/15/2002 |
| 6103107 | System for recycling ferrofluid constituents used in a materials separation process Ferrofluid coated particles resulting from a ferrofluid materials separation process are washed with a solvent which is the same material as the liquid carrier employed in the ferrofluid. The result is a "dirty" solvent which is a very weak ferrofluid. Th... | 08/15/2000 |
| 5702593 | Stormwater treatment system/apparatus A method and apparatus for treating contaminated stormwater runoff from roads and adjacent lands. A multi-stage and self-contained integrated module is designed to collect the first flush of stormwater runoff (which contains the majority of pollutants) an... | 12/30/1997 |
| 5549817 | Stormwater treatment system/apparatus A method and apparatus for treating contaminated stormwater runoff from roads and adjacent lands. A multi-stage and self-contained integrated module is designed to collect the first flush of stormwater runoff (which contains the majority of pollutants) an... | 08/27/1996 |
| 5437786 | Stormwater treatment system/apparatus A method and apparatus for treating contaminated stormwater runoff from roads and adjacent lands. A multi-stage and self-contained system designed to collect the "first flush" of stormwater runoff (which contains the majority of pollutants) and to treat t... | 08/01/1995 |
| 5407564 | Closed loop liquid treatment and recycling system A closed loop liquid treatment system for removing particulate matter and hydrocarbon waste from a contaminated liquid uses passive filtering systems in combination with an active microbe solution to remove particulate matter and to reduce hydrocarbons to... | 04/18/1995 |
| 5372718 | Filtering device A housing including an inlet conduit and an outlet, carrying a reservoir for collecting filtered liquid. The reservoir is secured within the housing by a lid. A separator assembly is carried by the reservoir and includes a strainer assembly for removing m... | 12/13/1994 |
| 5236585 | Oil accumulator An oil accumulation system having a first separating station and a second separating station, wherein the first separating station includes a tank for receiving contaminated water with an inclined plate separator disposed therein. The tank has an adjustab... | 08/17/1993 |
| 4859329 | Ultrasorb system The disclosure pertains to an oil decontamination and water recycling system which is designed to prevent oil, grease, and fuel contamination of ground or surface water and to return the clean water in a single pass for reuse. Water contamination results ... | 08/22/1989 |
| 4025424 | Process and apparatus for liquid-liquid counterflow extraction A process for liquid-liquid counterflow extraction based on the mixer-separator principle is disclosed. A dispersion of two liquid phases is fed to a separator and the clear phases are withdrawn therefrom. The dispersions to be separated are fed to the se... | 05/24/1977 |
| 3948767 | Method and apparatus for separating oil from aqueous liquids A method and apparatus are provided for separating oily particles from an emulsion thereof in an aqueous liquid. The emulsion is passed through a bed of oleophilic granules supported on a foraminous support, the oleophilic granules, by virtue of their den... | 04/06/1976 |
| 3948768 | Method and apparatus for separating oil from aqueous liquids A method and apparatus are provided for separating fine oily particles from aqueous liquids at very high flow velocities by passing the mixture upwardly through an unconfined mass of oleophilic granules in a column with adequate velocity to separate and l... | 04/06/1976 |
