Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 8029680 | Filtration apparatus and filtration method A filtration apparatus and a filtration method are provided. The filtration apparatus includes a filter medium, a first filter layer of a first filter aid disposed on an upstream side of the filter medium, and a second filter layer of a second filter aid disposed on... | 10/04/2011 |
| 7713427 | Water filtration and recycling for fabrication equipment A water treatment and recycling system for filtering grey waste water to clear water for stone fabrication equipment includes a waste water storage tank connected to receive grey water from stone fabrication equipment and a clear water supply loop. The clear water s... | 05/11/2010 |
| 7514010 | Water filtering method and apparatus A “polishing” water filter for the micro-filtration of fine particles comprises a porous ceramic substrate, having an average pore size in the range of about 0.2 to about 100 microns, which is coated with porous rice hull ash (RHA) particles that have an average... | 04/07/2009 |
| 7410605 | Solution film-forming method The solution film-forming method is provided in which the absolute filtration accuracy for a cellulose acylat solution can be improved and filtration throughput can be increased without reducing the pore size of a filtering material. A dope stock solution to be filt... | 08/12/2008 |
| 7381323 | Filtration apparatus A filtration apparatus is provided which is easy to maintain, manage and which enables preservation of filtration characteristics due to the fact that filtration is carried out by use of a gelatinous filter apparatus. In the filtration apparatus, filtration characte... | 06/03/2008 |
| 7351345 | Method for manufacturing a module for treating a fluid A module enabling individual adaptation by the user to the respective task in the treatment of fluids using housings and connections of existing filtration devices without any modification is described. The module comprises one or more cells stacked one on top of th... | 04/01/2008 |
| 7338607 | Filter canister, system containing filter canister, and their use A filter canister including a frame; a sheet of flexible fabric material that allows the flow of water therethrough, the sheet of flexible fabric material being connected to the frame in a manner defining an internal zone whereby substantially all fluid entering the... | 03/04/2008 |
| 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 |
| 7294233 | System and method for altering the tack of materials using an electrohydraulic discharge A system and method for altering the tack of a material, namely a polymer used as an adhesive, also known as stickies, or pitch. The present invention reduces the tack of the stickies and pitch by exposing the materials for a short duration to low-energy pulsed elec... | 11/13/2007 |
| 7264728 | Method of separating components in a sample using silane-treated silica filter media The present invention provides methods for separating one or more components of interest from a sample containing particulates and soluble materials. The method comprises the steps of: (a) filtering a sample through silica filter media whose surface silanol groups h... | 09/04/2007 |
| 7258238 | Debris filter with a rotating debris extractor A filter for filtering solid particles from liquids, especially for use in steam condensers and heat exchanger in thermal and nuclear power plants, said filter comprising a housing (4), a screen basket (2) located within said housing (4), a debr... | 08/21/2007 |
| 7247234 | Method for combined processing of diesel fuel The essence of the method is that diesel fuel is heated in the process of periodical circulation in a closed circuit including a heat exchanger and a rotor-disc apparatus of open type in centrifugal force field of which processes of mechanical destruction and disper... | 07/24/2007 |
| 7244366 | Water filtration and recycling for stone fabrication equipment for exterior and architectural stone A filtered grey water recycling system includes a waste water storage tank for receiving waste water from a stone processing system and a filtered grey water supply loop providing filtered grey water to the stone processing system. The filtered grey water loop inclu... | 07/17/2007 |
| 7228973 | Nonwoven fibrous media especially useful for the separation of blood constituents Blood separation media include a non-woven web of fibrillated and non-fibrillated synthetic staple fibers. The fibrillated synthetic staple fibers will most preferably have a Canadian Standard Freeness (CSF) of less than about 300 mL, whereas the non-fibrillated syn... | 06/12/2007 |
| 7188733 | Screening device, such as a screen cylinder, and method of manufacture of the screening device A screening device (e.g., screen plate or screen cylinder) is manufactured relatively inexpensively and easily yet has uniform screening openings (e.g., screening slots) even when of a width of less than 0.5 mm. A plurality of wires having first and second sections ... | 03/13/2007 |
| 7144533 | Microporous filter media, filtration systems containing same, and methods of making and using The invention is directed to a microbiological interception enhanced filter medium, preferably having an adsorbent prefilter located upstream from the filter medium. Preferably, the prefilter is adapted to remove natural organic matter in an influent prior to the in... | 12/05/2006 |
| 7077968 | Method for continuously filtering raw brine for use in chlor-alkali electrolysis The method of continuously processing raw brine with a solids content to obtain substantially solids-free pure brine (E) for use in chlor-alkali electrolysis. In this method the raw brine (A) is separated, by means of a decanter (1), into a clear brine (B) wi... | 07/18/2006 |
| 7074338 | Filtering method and filtering device Using the filter auxiliary agent separated by backwashing from a filter element repeatedly and effectively, the consumption amount of a filter auxiliary agent and the generation of industrial waste can be suppressed. In a filter auxiliary agent pre-coat circuit, a f... | 07/11/2006 |
| 7021667 | Connector apparatus and system including connector apparatus A connector apparatus is configured to replace a separation module in a system for dispensing a fluid. When it is desired to purge the system of a dispensed fluid, the connector apparatus, having the same configuration of an inlet and an outlet as the separation mod... | 04/04/2006 |
| 7018547 | Filtration covering apparatus A filtration covering apparatus for use covering diatomaceous earth filter grids for swimming pools. The filtration covering apparatus has a replaceable cover having two closed sides, a bottom opening, and a top opening. The replaceable cover is curved shaped to acc... | 03/28/2006 |
| 7001528 | Use of aqueous binders in producing filter materials The use of an aqueous polymer dispersion comprising dispersed particles of at least one polymer A1 obtainable by free-radical emulsion polymerization in the presence of a polymer A2 synthesized from from 50 to 99.5% by weight of at... | 02/21/2006 |
| 6974544 | Membrane filtration A method for membrane filtration of effluent water containing suspended matter reduces membrane clogging and improves filtration capacity of the membrane. The method includes adding a dose of a preselected coagulation reactant to the effluent before the effluent pas... | 12/13/2005 |
| 6974369 | Grinding water tank unit for eyeglass lens processing and eyeglass lens processing apparatus having the same An eyeglass lens processing apparatus for processing an eyeglass lens includes: a processing chamber inside which a lens grinding tool is disposed; a tank which stores grinding water; a drain hose connecting the processing chamber with the tank; a filter for elimina... | 12/13/2005 |
| 6953604 | Microporous filter media, filtration systems containing same, and methods of making and using The invention is directed to a microbiological interception enhanced filter medium, preferably having an adsorbent prefilter located upstream from the filter medium. Preferably, the prefilter is adapted to remove natural organic matter in an influent prior to the in... | 10/11/2005 |
| 6929532 | Method and apparatus for filtering a chemical polishing slurry of a wafer fabrication process A polishing slurry supply circuit for a semiconductor wafer fabrication process includes a tangential flow filter. The tangential flow filter is positioned upstream of a wafer polishing apparatus. The tangential flow filter may take the form of a hollow fiber filter... | 08/16/2005 |
| 6929754 | Solid/liquid separation system for multiphase converters Methods and apparatus for removing wax products from a slurry used in a Fischer-Tropsch reactor. The preferred embodiments of the present invention are characterized by a solid/liquid separation system that removes liquid products from a slurry by drawing the fluid ... | 08/16/2005 |
| 6913154 | Microporous filter media, filteration systems containing same, and methods of making and using The invention is directed to a microbiological interception enhanced filter medium, preferably having an adsorbent prefilter located upstream from the filter medium. Preferably, the prefilter is adapted to remove natural organic matter in an influent prior to the in... | 07/05/2005 |
| 6896818 | Water filtration and recycling for stone fabrication equipment A water treatment and recycling system to provide grey water and crystal clear water to a stone processing system including crystal clear water stone fabrication equipment requiring crystal clear water and grey water stone fabrication equipment capable of using grey... | 05/24/2005 |
| 6887390 | Optimized solid/liquid separation system for multiphase converters Methods for producing clean liquid/wax products from a slurry used in a Fischer-Tropsch reactor are disclosed. In general, one embodiment of the present invention comprises a solid/liquid filtration system having a filter medium comprising a substrate and a filter c... | 05/03/2005 |
| 6852229 | Method for preparing high-purity ionic liquids A method for preparing a high-purity ionic liquid having a pH value of 7 and an elemental analysis deviation of less than 0.5 wt % between a calculated elemental analysis and a found elemental analysis for each of carbon, hydrogen and nitrogen, wherein the method co... | 02/08/2005 |
| 6833077 | Sequential swinging precoat removal and renewal system, filter so equipped and method A precoat renewal system for a filter, such as a disc filter. The renewal system includes a plurality of nozzles coupled to spray piping and valving with each nozzle being positioned for spraying an area of one side of a disc. The nozzles and at least a portion of t... | 12/21/2004 |
| 6830679 | Filtration device A filtration device is provided in which wastewater, in the form of a colloidal solution containing microparticles, is guided to tank, circulated, and filtrated using a second filter. The device includes a gel film that is formed by suction on the surface of a first... | 12/14/2004 |
| 6800197 | Continuously operable rotating drum pressure differential filter, method and systems A rotating drum pressure differential filter is provided whereby a layer of filter medium is continuously refreshed by a spray applicator device after the layer is utilized to filter components sample medium and a portion of the layer is subsequently scraped to remo... | 10/05/2004 |
| 6736981 | Particulate polymers as filter aids The use is described of particulate, water-insoluble and scarcely swellable polymers of ethylenically unsaturated monomers, which polymers contain, copolymerized, at least 20% by weight, based on the total weight of the monomers, of at least one α,β-monoethylenica... | 05/18/2004 |
| 6733680 | Use of particulate polymers as filter aids for aqueous liquids The description is given of the use of particulate water-insoluble polymer preparations comprising at least one polymer P that is essentially made up of hydrophilic polymer segments and hydrophobic polymer segments as filter aids for filtering aqueous liquids. ... | 05/11/2004 |
| 6692644 | Process for recovering oil and sulfonates from filtration panel Process for treating filtration panels obtained by the filtration of oils containing sulfonates of earth-alkaline metal, the above filtration being carried out in the presence of filter aids essentially consisting of siliceous material, which comprises: (... | 02/17/2004 |
| 6669848 | Methods of treating commercial grade preservatives to remove undesirable odors and flavors The invention provides processes for treating commercial grade preservatives to remove the off-flavor and/or off-odor from the preservatives. The processes involve preparing a solution by dissolving the preservative in a suitable solvent, such as water or... | 12/30/2003 |
| 6660172 | Precoat filtration media and methods of making and using The invention is directed to a precoat or body feed composition comprising a microbiological interception enhanced filter aid. Preferably, the microbiological interception enhanced filter aid comprises fibrillated lyocell nanofibers having coated on at le... | 12/09/2003 |
| 6649068 | Filtration of pulp mill liquids A fiber mat is formed on a screen cylinder of a pressurized fiber filtering device used to filter particles from a liquid stream. The fiber mat is a fine particle filter to remove small particles from the liquid stream. The fiber mat is formed by injectin... | 11/18/2003 |
| 6616827 | Filtration method of copper electrolyte The present invention provides a filtration method of copper electrolyte that can remove minute electrolytic by-products and dirt and may improve filtration efficiency by improving a conventional filtration method, the so-called precoating method. In a fi... | 09/09/2003 |
