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 |
| 8056731 | Membrane structure and method of making A membrane structure is provided. The membrane structure includes a polymer layer having a plurality of pores; and a ceramic layer disposed on the polymer layer. The ceramic layer has a plurality of substantially unconnected pores. Each of the substantially unconnec... | 11/15/2011 |
| 7717271 | Membrane structure and method of making A membrane structure is provided. The membrane structure includes a first layer having a plurality of interconnected pores; and a second layer disposed on the first layer. The second layer has a plurality of unconnected pores. Each of the unconnected pores is in flu... | 05/18/2010 |
| 7553416 | Caustic silica gel manufacturing method and gels made thereby New silica gel materials and novel methods of producing such are provided. The method itself entails a manner of mixing the reactants together in a one-pot process such that the time required for aging is reduced without compromising the ability to target pore size ... | 06/30/2009 |
| 7441667 | Composite membranes for liquid filtration having improved uniformity and adhesion of substrate to membrane An improved casting substrate is provided for use in a composite membrane for use as a fluid filtration medium. The composite membrane has good adhesion between the casting substrate and the microporous membrane while maintaining high permeability. The casting subst... | 10/28/2008 |
| 7407742 | Plasma or serum separator, plasma or serum sampling method, plasma or serum separating method, test carrier and glass fiber Provided are a plasma or serum separator and a plasma or serum sampling method capable of isolating plasma or serum with good efficiency from a small amount of blood without using a centrifuge and without causing leakage of a blood cell component or hemolysis, and i... | 08/05/2008 |
| 7390343 | Drinking water filtration device The invention is a device for purifying drinking water that has at least one fibrous structure. Preferably, there is an upstream and downstream fibrous structure. Each fibrous structure is a mixture of nano alumina fibers and second fibers arranged in a matrix to cr... | 06/24/2008 |
| 7374680 | Filtration matrix The filtration device of the present invention relies on materials and methodologies that achieve the formation of a structural matrix that may later accommodate the addition of other adsorbent materials as opposed to merely binding adsorbent materials together thro... | 05/20/2008 |
| 7354542 | Lightweight, heat insulating, high mechanical strength shaped product and method of producing the same This invention relates to a process of a lightweight, heat insulating, high compressive strength, water insoluble material by heat treatment at temperatures between 650-950° C., possessing a low bulk density (from 300 to 800 kg/m3) and improved heat insu... | 04/08/2008 |
| 7344580 | Filter unit Converting machines give rise to polluted air which must be removed with the aid of fans and filters. The invention aims at removal of the polluted air in such a way that the servicing interval is greatly extended by the use of a filter unit having a number of part-... | 03/18/2008 |
| 7341668 | Filter aid and method of using same for reclaiming water-based fluids used in metal working processes A filter aid and a method of using the same are disclosed that effectively removes contaminants from water-based metal forming liquids used in aluminum forming, rolling and other metal working processes. The filter aid includes a cellulosic material and a cationic p... | 03/11/2008 |
| 7338605 | Filter aid and method of using same for reclaiming water-based fluids used in metal working processes A filter aid and a method of using the same are disclosed that effectively removes contaminants from water-based metal forming liquids used in aluminum forming, rolling and other metal working processes. The filter aid includes a cellulosic material and a cationic p... | 03/04/2008 |
| 7311752 | Electrostatic air filter The invention is a filter for gaseous media in which nano alumina fibers and second fibers are arranged in a matrix to create asymmetrical pores. The filter is a high efficiency, high capacity particulate filter that intercepts pathogens and other particulate matter... | 12/25/2007 |
| 7293661 | Filtration media comprising granules of binder-agglomerated active component Granules comprise binder-agglomerated active particles for liquid treatment or filtration. Each granule has a center core of a material that itself has binding properties without the addition of other binders or sprays or adhesives, or, alternatively, each granule c... | 11/13/2007 |
| 7290668 | Bicomponent fiber wick A bicomponent fiber wick is provided for use in processing an analyte fluid. The bicomponent fiber wick comprises a self-sustaining, fluid transmissive body comprising a plurality of bundled, crimped, bicomponent fibers bonded to each other at spaced apart contact p... | 11/06/2007 |
| 7270850 | Mesoporous permeation layers for use on active electronic matrix devices The present invention provides improved synthetic polymer hydrogel permeation layers for use on active electronic matrix devices for biological assays. The present invention includes methods for forming a permeation layer on an array of microelectrodes including the... | 09/18/2007 |
| 7241367 | Permeable membrane diaphragm of different layers for electroytic cells The present invention relates to a permeable membrane diaphragm of different layers for electrolytic cell, especially for chloro-alkali electrolytic cell. The diaphragm is asymmetric, which comprises at least two layers: a flow-controlling permeable layer comprising... | 07/10/2007 |
| 7178676 | Graded particle-size retention filter medium for fluid filtration unit with improved edge seal A fluid filtration unit having two or more filter medium layers and/or zones, at least one of the layers/zones having a different particle retention capability disposed on each side of a non-filtering separator element. The filter medium are presently preferably pos... | 02/20/2007 |
| 7169304 | Porous polymer water filter and methods of use in refrigeration The filtration device of the present invention relies on materials and methodologies that achieve the formation of a structural matrix that may later accommodate the addition of other adsorbent materials as opposed to merely binding adsorbent materials together thro... | 01/30/2007 |
| 7156240 | Filter for processing blood and process for producing the same A filter for reducing leukocytes and platelets from an erythrocyte preparation or a whole blood preparation which is characterized by having a filter base coated with a polymer, the content of the polymer being from 0.5 to 10 mg/m2 per unit area of the to... | 01/02/2007 |
| 7140497 | Selective deleukocytation unit for a platelet product The invention includes a filtration unit for the selective deleukocytation of a fluid containing blood platelets such as blood or a blood component. The unit includes a medium for deleukocytation by adsorption and/or filtration of the leukocytes. The medium is forme... | 11/28/2006 |
| 7135150 | Blood examination instrument A blood testing tool is provided, which can recover blood plasma or blood serum with a high yield without causing hemolysis of blood cells. A recovery porous membrane 1 to be impregnated with blood serum or blood plasma contained in blood and retain it and a ... | 11/14/2006 |
| 7112237 | Porous sintered composite materials The present invention is directed to porous composite materials comprised of a porous base material and a powdered nanoparticle material. The porous base material has the powdered nanoparticle material penetrating a portion of the porous base material; the powdered ... | 09/26/2006 |
| 7112280 | Gas porous polymer filter and methods of use The filtration device of the present invention relies on materials and methodologies that achieve the formation of a structural matrix that may later accommodate the addition of other adsorbent materials as opposed to merely binding adsorbent materials together thro... | 09/26/2006 |
| 7090770 | Filter cloth and method for producing the same The invention relates to a filter cloth for a filter press and to a method for producing said filter cloth. The inventive filter cloth has a filtration section through which the filtrate reaches a filter element of the filter press, and an edging section which rests... | 08/15/2006 |
| 7060183 | Unit for filtering a fluid A filtering unit, which may be used to filter blood or blood components to remove leukocytes. The filtering unit includes a rigid outer casing connected to a filter medium by an impermeable association means to define two compartments. The association means may be f... | 06/13/2006 |
| 7048709 | Bag provided with means for the temporary association of a filter The disclosure includes a flexible bag (1) intended to receive a biological fluid with a view to its centrifugation. The bag includes an external enclosure (2) formed by two sheets of flexible plastic (3, 3′) connected at their periphery (4... | 05/23/2006 |
| 7049382 | Activated carbon filter The present invention relates to a novel polymer as binder for producing activated carbon filters. The polymer of the invention is a polyethylene homopolymer and/or copolymer having a melt flow index (MFI 190/15) of from 1.2 g/10 min to 10 g/10 min, a polydispersity... | 05/23/2006 |
| 6986429 | Anti-microbial porous component formed of a polymer material grafted with ammonium units The invention concerns an anti-microbial porous part based on a polymeric material grafted at the surface and in its volume with ammonium motifs with anti-microbial and/or bactericidal and/or fungicide activity, preferably benzalkonium. The invention is characterize... | 01/17/2006 |
| 6960297 | Dialyzers for blood treatment and processes for production thereof A dialyzer for blood treatment including a semipermeable membrane which is made of a hydrophobic polymer and a hydrophilic polymer, and has a water permeating performance drying of ½ or higher relative to that before drying. The dialyzer has a vitamin B12 clearance... | 11/01/2005 |
| 6942106 | Wound polypropylene yarn filter cartridge and method for making same A filter cartridge formed of wound polypropylene yarn lacking a spin-finish and method of making same are disclosed herein. The method includes the steps of: providing a filter core; providing a plurality of continuous polypropylene filaments; applying water to the ... | 09/13/2005 |
| 6942711 | Hydroentangled filter media with improved static decay and method The present invention is directed to a filter media comprised of an electro-conductive scrim so as to improve on the dissipation time of an electrostatic charge. Further, the present invention is directed to a method of making such a filter media, which is formed th... | 09/13/2005 |
| 6939466 | Graded particle-size retention filter medium for fluid filtration unit with improved edge seal A fluid filtration unit having two or more filter medium layers and/or zones, at least one of the layers/zones having a different particle retention capability disposed on each side of a non-filtering separator element. The filter medium are presently preferably pos... | 09/06/2005 |
| 6877612 | Filter cartridge for use in severe environments A filter cartridge for use in severe or harsh applications, such as acidic or alkaline environments or hot or cold temperatures. The inventive filter cartridge is constructed of a central, perforated core having reinforcing bands on the ends which is surrounded by a... | 04/12/2005 |
| 6875353 | Synthetic material filter A filter for a vehicular sewage system that includes an elongated body having a plurality of longitudinal vanes and slots. The body is made from a material able to support the growth of biological agents. The slots sized to resist the passage of particles larger tha... | 04/05/2005 |
| 6871746 | Ancillary filtering agent The filter aid comprises finely divided plant fibers, which for a period of action have been subjected to a liquid treatment, which removes the sensorially active substances from the plant fibers. ... | 03/29/2005 |
| 6872311 | Nanofiber filter media The present invention is directed to an air filter medium comprising nanofibers, the filter medium having a thickness of less than 0.25 millimeters, a Figure of Merit of greater than about 0.075, and an efficiency of greater than about 99.9% when capturing aerosol p... | 03/29/2005 |
| 6858161 | Method for purifying electronic item material A method for purifying an electronic item material, which comprises dissolving an electronic item material or its intermediate product in an organic solvent and having the solution contacted with activated clay at a temperature of 65° C. to 200° C. ... | 02/22/2005 |
| 6838005 | Nanosize electropositive fibrous adsorbent Aluminum hydroxide fibers approximately 2 nanometers in diameter and with surface areas ranging from 200 to 650 m2/g have been fount to be highly electropositive. When dispersed in water they are able to attach to and retain electronegative particles. Whe... | 01/04/2005 |
| 6787492 | Filter cloth The invention relates to a filter cloth intended for a filter which has a variable volume and is based on diaphragm extrusion, particularly for a Larox®-type vertical pressure filter. The filtering properties of the filter cloth (5) are substantially similar... | 09/07/2004 |
| 6770736 | Activated carbon filter The present invention relates to a novel polymer as binder for producing activated carbon filters. The polymer of the invention is a polyethylene homopolymer and/or copolymer having a melt flow index (MFI 190/15) of from 1.2 g/10 min to 10 g/10 min, a polydispersity... | 08/03/2004 |
