Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7901585 | Process, method and system for removing mercury from fluids There are provided methods and processes that employ a mercury-adsorbing granular material as a sorbent to remove mercury from fluids. The fluids can be waste fluids that result from manufacturing, processing, or other treatment processes or systems. The fluids can ... | 03/08/2011 |
| 7666318 | Process, method and system for removing mercury from fluids There are provided methods and processes that employ a mercury-adsorbing granular material as a sorbent to remove mercury from fluids. The fluids can be waste fluids that result from manufacturing, processing, or other treatment processes or systems. The fluids can ... | 02/23/2010 |
| 7442353 | Heat recirculating cooler for fluid stream pollutant removal A process by which heat is removed from a reactant fluid to reach the operating temperature of a known pollutant removal method and said heat is recirculated to raise the temperature of the product fluid. The process can be utilized whenever an intermediate step rea... | 10/28/2008 |
| 7419605 | Method for treating metal-contaminated water and soil A method for removing metal contaminants from water uses lignin derivatives, such as lignosulfonates and kraft lignin, a coagulant, such as a metal salt, and a pH-increasing composition. The lignin derivative is dispersed in the contaminated water, the coagulant is ... | 09/02/2008 |
| 7404939 | Mercury removal sorbent A sorbent composition comprising a vanadium compound and a TiO2 support material is disclosed. Methods of making and using the composition to remove heavy metals or heavy metal containing compounds from a fluid stream are also provided. Such methods are p... | 07/29/2008 |
| 7332090 | Process for the removal of mercury from solutions contaminated with mercury Mercury is removed from solutions contaminated with mercury by filtration through a carbon filter consisting of electrode graphite. ... | 02/19/2008 |
| 7309437 | Compositions and methods for removal of toxic metals and radionuclides The present invention relates to compositions and methods for the removal of toxic metals or radionuclides from source materials. Toxic metals may be removed from source materials using a clay, such as attapulgite or highly cationic bentonite, and chitin or chitosan... | 12/18/2007 |
| 7255793 | Methods for removing heavy metals from water using chemical precipitation and field separation methods A two-step chemical precipitation process involving hydroxide precipitation and sulfide precipitation combined with “field separation ” technology such as magnetic separation, dissolved air flotation, vortex separation, or expanded plastics flotation, effectivel... | 08/14/2007 |
| 7169309 | Polysaccharides with oxime or amine functions which are used for water treatment and sludge conditioning The invention relates to a particular polymer which is derived from a copolymer polysaccharide formed by a main chain comprising similar or different anhydrohexose units and branches including at least one neutral or anionic anhydropentose and/or anhydrohexose unit.... | 01/30/2007 |
| 7138059 | Environmental bioremediation using shell as an electron donor A method for in situ bioremediation of contaminants in the environment is described. The method includes adding an electron donor to ground water in an amount sufficient for a microbe in the ground water to use the electron donor for reducing the contaminant into an... | 11/21/2006 |
| 7083732 | Method and installation for removal of metal cations from a liquid by resins with polyazacycloalkanes grafted on a support The invention is related to a method and an installation for removal of metal cations contained in a liquid, in which said liquid is brought into contact at a temperature greater than or equal to 60° C. with a chelating ion exchange resin formed from a polyazacyclo... | 08/01/2006 |
| 7063793 | Apparatus and method for removing mercury and mercuric compounds from dental effluents The present invention is directed to processes for removing a contaminant from dental effluents and includes transporting a three-phase effluent through a suction line into a particle collection vessel, introducing a suction line cleaning solution which includes a r... | 06/20/2006 |
| 7041222 | Process for the removal of toxic metals from water A process for the selective removal of toxic heavy metals from a flowing stream of water involves causing the stream to flow through a stationary bed of particulate polymer having amine functional groups, and injecting into the stream, adjacent the upstream extremit... | 05/09/2006 |
| 7029202 | Method for treating metal-contaminated water and soil A method for removing metal contaminants from water uses lignin derivatives, such as lignosulfonates and kraft lignin, a coagulant, such as a metal salt, and a pH-increasing composition. The lignin derivative is dispersed in the contaminated water, the coagulant is ... | 04/18/2006 |
| 7011756 | In situ immobilization of metals within density variant bodies of water A method for treating (in situ) large bodies of water contaminated with heavy metals and having varying density stratas to immobilize the contaminant metals is disclosed. The method, or process for (in situ) immobilization of metals is focused on treating large bodi... | 03/14/2006 |
| 6942840 | Method for removal and stabilization of mercury in mercury-containing gas streams The present invention is directed to a process and apparatus for removing and stabilizing mercury from mercury-containing gas streams. A gas stream containing vapor phase elemental and/or speciated mercury is contacted with reagent, such as an oxygen-containing oxid... | 09/13/2005 |
| 6923914 | Remediation of metal contaminants with hydrocarbon-utilizing bacteria Methods and apparatus are disclosed for remediating metal contaminants using hydrocarbons which stimulate the growth of hydrocarbon-utilizing bacteria. The metal contaminants may include heavy metals such as arsenic, antimony, beryllium, cadmium, chromium, copper, l... | 08/02/2005 |
| 6896815 | Methods for removing heavy metals from water using chemical precipitation and field separation methods A two-step chemical precipitation process involving hydroxide precipitation and sulfide precipitation combined with “field separation” technology such as magnetic separation, dissolved air flotation, vortex separation or expanded plastics flotation, effectively ... | 05/24/2005 |
| 6896817 | Essentially insoluble heavy metal sulfide slurry for wastewater treatment A product and method for the removal of pollutant heavy metals from aqueous solutions which precludes the end user from storing, handling, feeding and controlling hazardous soluble sulfide materials. The product is a slurry which includes a mixture of a liquid mediu... | 05/24/2005 |
| 6869537 | Metal chelate-forming fiber, process for producing the same, method of trapping metal ion with the fiber, and metal chelate fiber A fiber capable of forming a metal chelate and a process for producing the same are disclosed, wherein the fiber is characterized in that at least one metal chelate-forming compound selected from the group consisting of aminocarboxylic acid, aminocarboxylic acid, th... | 03/22/2005 |
| 6855254 | Magerle metal waste recovery process A metal waste recovery process for recovering useful material from a quantity of waste material. The waste material is a composition including oil, metals and organic materials. The first step of the process is to deposit the waste material into a slurry tank and to... | 02/15/2005 |
| 6843922 | Bead and process for removing dissolved metal contaminants A bead is provided which comprises or consists essentially of activated carbon immobilized by crosslinked poly(carboxylic acid) binder, sodium silicate binder, or polyamine binder. The bead is effective to remove metal and other ionic contaminants from dilute aqueou... | 01/18/2005 |
| 6797178 | Method for removing mercury and mercuric compounds from dental effluents The present invention is directed to processes for removing a contaminant from dental effluents and includes transporting a three-phase effluent through a suction line into a particle collection vessel, introducing a suction line cleaning solution which includes a r... | 09/28/2004 |
| 6719902 | Fe(o)-based bioremediation of aquifers contaminated with mixed wastes Disclosed are methods, devices and apparatus for bioremediation of mixed waste aquifers, based on a synergistic combination of reductive treatment using zero-valent iron and anaerobic biotransformations. Also disclosed are methods for in situ and ex situ remediation... | 04/13/2004 |
| 6692636 | Apparatus removing metallic particles from effluent liquid waste An apparatus for separating solid particles from the suction effluent of, for example, a dental office, preferably driven by a dental office vacuum pump, includes a surge tank for accommodating effluent overfill connected to a sedimentary deposit tank for... | 02/17/2004 |
| 6635182 | Floatation process for removal of heavy metal waste and associated apparatus The present invention is a floatation process and associated apparatus for removing heavy metal waste from various effluent water streams. The process and apparatus generally introduces a population of fine diameter air bubbles and one or more flocculatin... | 10/21/2003 |
| 6596182 | Magnetic process for removing heavy metals from water employing magnetites A process for removing heavy metals from water is provided. The process includes the steps of introducing magnetite to a quantity of water containing heavy metal. The magnetite is mixed with the water such that at least a portion of, and preferably the ma... | 07/22/2003 |
| 6521131 | Combined oxidation and chelating adsorption system for removal of mercury from water The disclosed invention relates to a method of disposing of mercury-containing wastewater containing mercury-complexing materials, comprising the steps of treating wastewater containing mercury ions with a strong oxidizing agent in a reaction chamber to p... | 02/18/2003 |
| 6491822 | Protection of crossflow membranes from organic fouling A method for improving the efficiency and usable life in a cross flow membrane filter used to remove contaminants from bilgewater. The bilgewater is passed upstream of the cross filter membrane through a fluid-pervious filtration media which has been infu... | 12/10/2002 |
| 6475393 | Method and apparatus for removing pernicious contaminants from bilgewater discharge A method and apparatus for removing contaminants from an oily bilgewater. In the method the bilgewater is passed through a fluid-pervious filtration media which has been infused with an absorbtion composition comprising a homogeneous thermal reaction prod... | 11/05/2002 |
| 6402960 | Thiacrown polymers for removal of mercury from waste streams Thiacrown polymers immobilized to a polystyrene-divinylbenzene matrix react with Hg2+ under a variety of conditions to efficiently and selectively remove Hg2+ ions from acidic aqueous solutions, even in the presence of a variety of o... | 06/11/2002 |
| 6403044 | Method and apparatus for stabilizing liquid elemental mercury The present invention is directed to a system and method for converting hazardous speciated and elemental mercury-containing wastes to environmentally acceptable wastes by mixing the wastes in the presence of a polysulfide, water, and an mercury-reactive ... | 06/11/2002 |
| 6398968 | Methods for pressure stabilized removal of contaminants from solution Embodiments of the present invention relate to methods and systems for removal of contaminants from aqueous solutions. The methods and systems of these embodiments are particularly suited to removal of arsenic species as well as transition-metals, post-tr... | 06/04/2002 |
| 6365042 | Apparatus for removing noble metal contamination from liquids Silicon is employed as a reducing agent in an acid bath to adsorb noble metals present as contaminants in the acid. In the manufacture of silicon devices for electronic memory and other devices, polonium-210 is adsorbed by silicon getters to reduce soft e... | 04/02/2002 |
| 6350380 | In situ immobilization within density variant bodies of water A method for treating in situ large bodies of water contaminated with heavy metals and having varying density stratas to immobilize the contaminant metals is disclosed. The method, or process for in situ immobilization of metals is focused on treating lar... | 02/26/2002 |
| 6342162 | Removal of heavy metal ions from aqueous media Process for removing heavy metal ions from aqueous media, characterized in that, to precipitate out the heavy metal ions, a sulphide precipitation is carried out in the presence of iron oxide.... | 01/29/2002 |
| 6228270 | Process for reducing selenium and mercury from aqueous solutions The present invention relates to an apparatus for removing volatile impurities such as mercury and selenium from a weak acid solution resulting from scrubbing gases created in the production of sulfuric acid by roasting of sulfide concentrates. The appara... | 05/08/2001 |
| 6221128 | Recovery and removal of mercury from effluent Mercury salt-containing discharge effluents such as from B-5 fixatives and PVA fixatives are treated to remove mercury therefrom. The present method contemplates plates the addition of aluminum to the effluent to cause the precipitation of elemental mercu... | 04/24/2001 |
| 6153108 | Method for removal of heavy metals from water A method to remove heavy metals concentrations in water down to very low levels is described. The method calls for the addition of a soluble sulfide to the water. This is followed adding a soluble iron reagent such as ferrous sulfate or ferrous chloride. ... | 11/28/2000 |
| 6117333 | Removal of hydrocarbons, mercury and arsenic from oil-field produced water A process is disclosed which involves removing hydrocarbons, arsenic and mercury from wastewater produced in oil and gas fields. An oxidant, ferric ions, and flocculent are sequentially added to the wastewater to form a removable sludge containing the ars... | 09/12/2000 |
