Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7435344 | Device for separating impurities from liquids A device for separating impurities from liquids has at least one separating container for separating impurities from a liquid/impurities mixture flowing in a flow direction through the at least one separating container. A partition divides the interior of the at lea... | 10/14/2008 |
| 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 |
| 7377210 | Grease receiving and holding system A grease receiving and holding system includes a sink that has a peripheral flange having an opening extending therethrough. A housing is mounted below a plane of the peripheral flange. The housing has a bottom wall, a top wall and a peripheral wall extending betwee... | 05/27/2008 |
| 7318374 | Wire cloth coffee filtering systems A beverage filter assembly, including a frame having a plurality of openings passing therethrough; and a wire cloth filter disposed within the frame. ... | 01/15/2008 |
| 7303683 | Microorganism-removing filter medium having high isoelectric material and low melt index binder A filter medium capable of removing microorganisms from a fluid such as water. The filter medium includes particles of activated carbon, particles of a substantially insoluble inorganic material having an isoelectric point greater than the fluid being filtered. A lo... | 12/04/2007 |
| 7232275 | Bollard and accessories for use therewith A bollard comprising a series of at least two nested, inverted U-shaped forms of decreasing height set around a common vertical axis. Each U-shaped form has an upper transverse portion and two parallel, vertical legs extending from the upper transverse portion. The ... | 06/19/2007 |
| 7232038 | Disposable test tube rack A test tube rack for supporting, storing and carrying a plurality of test tubes in a laboratory environment comprising a tray, a central support panel and/or lower support panel and a cover. The tray and cover are identical and interchangeable, and tapered for stora... | 06/19/2007 |
| 7211165 | Method of forming multiwell filtration plates A method of forming a multiwell filtration plate comprising of first gluing a filter to a major surface of a multiwell plate so as to close off one entrance to the wells of the plate. The filter is then heat sealed so as to collapse the pores of the filter in the ar... | 05/01/2007 |
| 7208081 | Gutter foam filter The gutter foam filter elements are generally triangular, four-foot lengths of flexible plastic open-cell foam material placed in and extending the full length of a conventional âKâ type or similar roof gutter. The foam filter elements may be inserted within the... | 04/24/2007 |
| 7200969 | Down spout guard made from non-woven material A non-woven mesh guard which can be inserted into a downspout opening in a rain gutter in order to prevent debris from entering the downspout is provided. The non-woven mesh includes a large free area to allow for the flow of water therethrough while preventing debr... | 04/10/2007 |
| 7179377 | Filter for sludge filtration A sludge filter is comprised of a mesh filter media secured to a support net. The support net includes a front surface adjacent the filter media and a rear surface opposite the filter media, the rear surface having a plurality of outwardly extending nodes to define ... | 02/20/2007 |
| 7176034 | Apparatus and method for filtering biological samples There is provided an apparatus and method for collection and filtration of a sample having a sample holder, a filtrate holder and a connection conduit having a sample receiving end and a filtrate receiving end and containing a filter. The sample holder has an entry ... | 02/13/2007 |
| 7163635 | Integrated below-ground vault with a filtered catch basin The invention relates to an integrated belowground vault with filter catch basin, that allows the runoff water to enter into a belowground two-part vault passing through a commercially available replaceable filter before being transferred out to the sewer, flood con... | 01/16/2007 |
| 7153424 | Apparatus for purifying water An apparatus for purifying water, that includes a frame, in connection with which is arranged a primary space for water to be filtered, secondary space for filtered water and a filter. The filter is arranged to filter water, that is driven by gravity from the primar... | 12/26/2006 |
| 7137419 | Used cooking oil processing apparatus An oil filtering and storage apparatus comprising housing containing a cooking oil storage receptacle therein with a hingedly attached door providing access to said storage receptacle with the receptacle serving as containment of oil that has been filtered for reuse... | 11/21/2006 |
| 7128832 | Filter pit A filter pit is disclosed. The pit has an inlet and an outlet adjacent a base of the pit. A primary, a secondary and a tertiary filter are located between the inlet and outlet and the tertiary filter is supported above the base and is able to dry out when the flow o... | 10/31/2006 |
| 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 |
| 7073670 | High capacity depth filter bag A filter element for hydrocarbon emissions in, e.g., marine diesel engine applications, comprises a wound mat received within a filter bag. An annular end cap is bonded to one end of the wound mat, and is sealed around its periphery to a bag ring at the open end of ... | 07/11/2006 |
| 7025880 | Fluid receptacle and filter system A system for separating particles from fluid which includes a receptacle for containing the fluid, a lid for covering the receptacle, and a filter assembly which includes a filter component shaped to fit the receptacle, an o-ring encircling the perimeter of the filt... | 04/11/2006 |
| 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 |
| 7011755 | Disposable vacuum filtration funnel with integral prefilter A filtration funnel with integral prefilter usable for filtering fluids. The integral prefilter is disposed above the final filter which is sealed to the funnel. The prefilter may contain one or more layers of prefilter material, and is sealed to the funnel with one... | 03/14/2006 |
| 7011746 | Rainwater surface drain A rainwater surface drain for use in roof drains comprises a substantially funnel-shaped reservatory for water to be drained and covered with an upper strainer or grating member downstream of which an eddy preventing insert means in the form of a flat grate member i... | 03/14/2006 |
| 6977037 | Apparatus for use in reclaiming coolant used in cutting machines An apparatus for reclaiming coolant used in cutting machines and for returning the reclaimed coolant to the coolant system of the cutting machine is provided. The apparatus includes a shallow receptacle for supporting a barrel that cuttings are deposited into during... | 12/20/2005 |
| 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 |
| 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 |
| 6942835 | Device for holding a solid in a tube, and test kit using such a device The invention provides a test kit, having a tube (17) and a reactant (30) which is held between two holding devices (8, 9). Each holding device has a filter (10), with an elastically deformable part (13) transverse to a disc (11... | 09/13/2005 |
| 6913152 | Disposable vacuum filtration apparatus capable of detecting microorganisms and particulates in liquid samples A vacuum filtration apparatus (900) for detecting microorganisms and particulates in liquid samples. The apparatus includes a base (901), an absorbent pad (991), a filter (990), a funnel (930), and a lid (960). The funnel is... | 07/05/2005 |
| 6896144 | Filtration and separation apparatus and method of assembly A filtration apparatus having a plurality of sample wells comprises an upper plate comprising a plurality of upper wells, a lower plate comprising a plurality of lower wells disposed in flexible communication with each other, and a ratcheting mechanism disposed at i... | 05/24/2005 |
| 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 |
| 6849179 | Internal filter An internal filter that may be installed or removed from the outside of the housing. The internal filter may also cooperate with an inlet passage for a charge pump. ... | 02/01/2005 |
| 6770203 | Filtering unit having separately attachable filter cassette, filter cassette, and method of filtering A filtering unit including an upper container for receiving fluid to be filtered, a lower container for receiving the fluid from the upper container and an intermediate filter cassette. The filter cassette includes a support member connected with a flat filter membe... | 08/03/2004 |
| 6761271 | Rinse screen for a water bucket A wash bucket screen has a slanting platform supported on a frustum skirt. The platform has a plurality of holes interspersed between raised ridges on the platform running radially generally toward its perimeter as an aid in releasing water from a cloth squeezed aga... | 07/13/2004 |
| 6732635 | Coffee pot A coffee pot has a strainer (3) in the form of a bag which extends down into the pot (1). Ground coffee (6) is first poured into the pot (1), and then hot water (5) is filled into the pot, causing the coffee (6) to be stirre... | 05/11/2004 |
| 6675974 | Device for handling specimens An apparatus for use with an array of liquid specimen containers having open upper ends includes a panel structure having an array of openings corresponding to the array of liquid specimen containers such that the open upper ends of the containers will be... | 01/13/2004 |
| 6602408 | Filtration system for water garden reservoir A filtration system is described for a water garden having a reservoir 10. The reservoir includes a lid 14 and a tubular intake 26 connected to a water line 20 for receiving unfiltered water. The improvement includes a cup-shaped retainer 40 and one or mo... | 08/05/2003 |
| 6592756 | Swimming pool skimmer basket handle and reversible weight There is disclosed a swimming pool skimmer basket handle capable of being attached to a swimming pool skimmer basket, in which the handle has a column that positions a grip of the handle above the top of the skimmer basket when the handle is attached to t... | 07/15/2003 |
| 6551509 | Feed unit and fuel filter for feeding fuel A feed unit for feeding fuel includes a baffle having a bottom region defining a partial region. A filter having a filter fabric covers the region. The fuel pump inlet is connected for receiving fuel from the partial region via a connection through the fi... | 04/22/2003 |
| 6544417 | Low binding liquid retaining and filtering device This invention is directed to filtrate-holder and reversible-well collection plates composed of polypropylene and Teflon.RTM. resin, and to their use, in connection with compatible filter units, in high-throughput screening assays for assessing the bindin... | 04/08/2003 |
| 6527126 | Coffee filter restraint and flavor system The present invention 10 discloses a plastic two-piece filter restraint housing 38 having a spring 32 within each two post portion of the device which spring is held therein when the portions of the restraint are joined together. The housing 38 utilizes f... | 03/04/2003 |
