...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 8162152 | Blood filter device and method of manufacturing the same A blood filter device includes: a housing that includes a dome 2 provided with a blood inlet, a filter retaining portion 3 that is positioned below the dome, and a bottom portion 4 provided with a blood outlet; and a filter 8 that is moun... | 04/24/2012 |
| 7413089 | Reusable cartridge oil filter A replacement filter for conventional throw-away spin-on oil filter cartridge on an internal combustion engine. The replacement filter uses a porous metallic filter element, preferably a woven stainless steel, pleated filter element, within a housing physically simu... | 08/19/2008 |
| 7410575 | Fluid filter and cap member A three-piece filter system comprises a base, a deep pocket filtering media, and a housing shell. The base is adapted to be fitted/threaded onto an engine block, with a sealing surface to provide a seal with the engine block. The filtering media and cap member is pl... | 08/12/2008 |
| 7389883 | Filter cartridge A filter cartridge which comprises a filter pack (3) formed by a flat filtering medium, a tubular sheath (2) with a perforated wall, surrounding the filtering pack, and two respective end caps (5) having a first disc (16) and a second dis... | 06/24/2008 |
| 7354513 | Countertop water treatment unit An improved residential countertop water treatment unit for producing potable water suitable for human ingestion such as by drinking or cooking that comprises a vertical arrangement of a base, a cartridge, and a spigot at the top. The base includes an elongated thre... | 04/08/2008 |
| 7297255 | Mass or energy transfer cartridge and module A mass transfer or energy transfer module is provided which includes a manifold, a cartridge and a bowl which houses the cartridge. The cartridge and bowl are connected to each other at least two flanges which fit into slots of the bowl to form a unitary constructio... | 11/20/2007 |
| 7237682 | Filter assembly with slip thread A filter assembly comprising a housing with a threaded open end, a filter element, and a cover assembly. The filter element includes a media ring and a pair of end caps, one of which includes outwardly-projecting fingers. The cover assembly includes a cover member, ... | 07/03/2007 |
| 7232522 | Self locking bowl retainer for a filter can In a Racor filter, an adaptor is provided to threadably mount a water collecting bowl to a can containing a filter element. In order to prevent the adaptor from rotating with respect to the can, the adaptor has an axially extending rim with a non-circular cross sect... | 06/19/2007 |
| 7220291 | Filter housing assembly A filter housing assembly having a gas-tight seal and a method of replacing a filter are generally provided. In one embodiment, the filter housing assembly includes a housing having an opening adapted to receive a filter and an inlet. A seal member is coupled to the... | 05/22/2007 |
| 7198713 | Installation for the removal and the deactivation of organisms in the ballast water Installation for the removal and the deactivation of organisms in the ballast water, with the following characteristic features: a first feed pump for conveying the ballast water, an equipment for gravity precipita... | 04/03/2007 |
| 7182864 | Housing for environmentally friendly filter cartridge A filter system in which a housing and an environmentally friendly filter cartridge are coordinated to provide ease of change of the filter cartridge and reliable operation. The cartridge contains no metal parts and is readily incinerateable. The housing is provided... | 02/27/2007 |
| 7168573 | Environmentally friendly filter cartridge A filter cartridge which is environmentally friendly in that it is made up of components which are all incinerateable. The ends of a filter element are sealed using potting compound and plastic endcaps. The upper endcap, which is closed, has a pressure relief apertu... | 01/30/2007 |
| 7101418 | Method and device for degassing a suspension, specifically a fiber stock suspension The invention relates to a method and a device for degassing of suspension, specifically fiber stock suspension. The method according to the invention is characterized in that separated excess suspension is discharged sideways through an overflow having an overflow ... | 09/05/2006 |
| 7097681 | Structure of filtering bag combination An improved filtering bag combination having an increased area of filtering and a longer life of use. The improved structure includes a filtering member with multiple folds to cover a support formed of a plurality of rods. The rods of the support have a plurality of... | 08/29/2006 |
| 7011754 | Filtering device having filter bag seal A filtering device includes a container, a cover attached on top of the container having a space communicating with an inlet opening and a chamber of the container, and a filter screen received in the container for filtering the fluid from the inlet opening to the c... | 03/14/2006 |
| 7001517 | Collapsible filter element A filter element assembly has at least two cylindrically shaped and concentrically arranged filter media sleeves each connected at one end thereof to an inlet plate and each connected at the other end to a closed end terminal plate. Openings are provided in the inle... | 02/21/2006 |
| 6991665 | Evertible filter wrap with straps A filter wrap for a cylindrical filter has a sheet with an interior side facing the filter when the sheet is wrapped on the filter, and an exterior side. It also has an edge defining a main opening to the interior for receiving the filter. At least one strap is prov... | 01/31/2006 |
| 6974537 | Diesel fuel purifier The diesel purifier produces a fuel of high purity that meets the full ignition requirements at the combustion chamber of the engine. The purifier comprises a purification chamber encapsulated by an external body of the unit wherein, the purification chamber has a b... | 12/13/2005 |
| 6966443 | Paraffin filter element A paraffin filter for a paraffin spa includes a first end cap and a second end cap with a filter medium sandwiched therebetween. Each end cap is disk-like body having a respective tubular connection for the input or output of melted paraffin, thus providing a low pr... | 11/22/2005 |
| 6949188 | Filter assembly having improved sealing features A filter assembly including a filter housing defining an interior chamber with an open end, a filter disposed within the interior chamber, and a cover removably positioned over the open end to enclose the interior chamber. The filter housing defines an axially-facin... | 09/27/2005 |
| 6938627 | Dishwasher A dishwasher is provided such that an impurity-collecting filter collecting impurities is detachably mounted to a front of a cabinet, thus allowing the impurity-collecting filter to be easily cleaned, and keeping a bottom of a washing tub cleaner. The dishwasher inc... | 09/06/2005 |
| 6931891 | Washing machine with a drain pump The invention provides a washing machine (10) having a front panel (11), a tube (14) for containing articles to be washed, a water inlet (16) for admitting water to the tub, a water outlet (26) for discharging water from the tub ( | 08/23/2005 |
| 6926821 | Water treatment device with volumetric and time monitoring features A totalization meter system for a water treatment device, the device having an inlet aperture and an outlet aperture, and a channel for channeling water between the inlet and outlet apertures. A flow reactive device is positioned in the channel and is exposed to the... | 08/09/2005 |
| 6923908 | Filter apparatus A filter apparatus for use in liquid chromatography systems includes a housing component having an open channel formed therethrough for operably receiving fluid transfer tubing in at least a first end thereof, a relatively thin mesh filter component, and a securemen... | 08/02/2005 |
| 6911141 | Low waste liquid filter A lubricating oil filter has a housing which includes a first shell providing a housing base and a second shell providing a housing lid, wherein a filter media is suspended in a space defined by the shells by being clamped between a shoulder in the housing base and ... | 06/28/2005 |
| 6908593 | Capillary flow control in a fluidic diagnostic device A medical diagnostic device for measuring an analyte concentration or property of a biological fluid includes capillary flow channels to convey a sample of the fluid from an inlet to a branching point, and then to a measurement area and, alternatively, through a byp... | 06/21/2005 |
| 6892892 | Frustum filter used for separation of cation and anion exchange resins A frustum filter used for separation of cation and anion exchange resins, which is used in condensate water polishing system or apparatus, wherein said frustum filter comprises a microporous filtering net body (1) which is formed by sintering a mixture of sil... | 05/17/2005 |
| 6886698 | Apparatus for removing pyrophoric catalyst Spent pyrophoric reaction catalyst from a reaction mixture is removed safely, cheaply, and rapidly using a single plate pressure filter. After hydrogenation, the reaction mixture is decanted, the desired hydrogenation product is removed, and catalyst-rich material w... | 05/03/2005 |
| 6852222 | Multiple well plate with adhesive bonded filter The present invention provides for a multiple well filter plate and method of producing same, the multiple well filter plate comprising a molded plate and a filter sealed via an adhesive, the method particularly adapted for producing multiple well filter plate havin... | 02/08/2005 |
| 6846412 | Combination filter assembly A combination filter assembly having a plurality of filter sieves positioned in parallel one after the other in the direction of flow. The filter sieves are stretched and mounted in housing elements to form filter elements. The housing elements are in contact with e... | 01/25/2005 |
| 6843913 | Fuel filter with leak avoidance plug The fuel filter housing (12) is formed of inlet segment (14) and outlet segment (16) that are telescopically mounted to each other, with a seal (44) positioned between the mounting flanges (38) and (40). Valve (60) is... | 01/18/2005 |
| 6821790 | Methods and apparatus for separation of biological fluids A method of separating a cell-containing sample into a substantially cell-depleted portion, and a cell-containing portion comprising at least one of a stem cell, a lymphocyte, and a leukocyte comprises a step in which the sample is received in a vessel with at least... | 11/23/2004 |
| 6814860 | Oil strainer An oil strainer comprises upper and lower partial bodies, made of synthetic resin, joined together to form a roughly tube-shaped strainer main body, the interior of which is provided with a filter. The oil strainer has a flange section for attachment with bolts, and... | 11/09/2004 |
| 6805795 | Latch-assisted lid extractor The present invention relates to the latch-assisted lid extractor. The present invention includes a canister and a lid connected to the canister via a latch assembly. The latch assembly includes an over-center lock to removably secure the lid to the canister. Additi... | 10/19/2004 |
| 6802425 | Biological fluid filtration method and apparatus A biological fluid filter is disclosed for use in a biological fluid processing system. The biological fluid filter comprises an inlet section, with said inlet section comprising a top wall and a downstanding peripheral side wall, an outlet section complimentary in ... | 10/12/2004 |
| 6793813 | Sealed filtration system A sealed filtration system includes a housing, having two chambers, that can be submerged. One chamber houses a plurality of subchambers in which various filter media are located, and the other chamber houses a submersible pump or additional filer media. A drain cha... | 09/21/2004 |
| 6770108 | Filter housing A filter housing for retaining a roomside replaceable filter is generally provided. In one embodiment, the filter housing includes one or more sidewalls defining an interior volume. Each sidewall includes a first section and an adjacent second section sealingly coup... | 08/03/2004 |
| 6764593 | Automobile air conditioning refrigerant filter A refrigerant filter, attachable to automotive air-conditioning systems, for removal of debris from air-conditioning refrigerants. The filter media is contained within a two-part hollow body for flow-through filtration of the refrigerants. The first and second parts... | 07/20/2004 |
| 6764653 | Method of forming well(s) containing filtration devices A single or multiwell plate using membrane, preferably an ultrafiltration membrane to filter selected solutes from a liquid is disclosed. In particular, a preferred construction and method of sealing the membrane to the interior of the well so as to form an integral... | 07/20/2004 |
| 6733664 | Filtration device for separation of concretions, fragments or other body material from liquids A filtration device for separating concrements, fragments or other body material from liquids which are processed by means of a lithotripter connected to a suction device equipped with a peristaltic valve and sucked out of body cavities. The device has a functional ... | 05/11/2004 |