Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7438500 | Erosion resistant barrier with varying permeabilities The invention relates to a barrier cap material including a blend of: a plurality of aggregate particles, and a plurality of manufactured composite particles including a hydratable sealant material. In a particular embodiment, the segregation of a blend of aggregate... | 10/21/2008 |
| 7374691 | In-situ hydraulic treatment conduit A system is installed in the subsurface to control the hydraulic gradient between the area within a containment system and the area outside the containment system, and provides an easy-to-maintain treatment system. Preferably, the treatment system includes a suffici... | 05/20/2008 |
| 7347647 | Composite material for a permeable reactive barrier Compositions in accordance with the principles of the present invention comprise a compressed mixture of fibrous organic materials and multi-valent metals used to remove organic chemical contaminants. The compositions are made into a pre-shaped, compressed form used... | 03/25/2008 |
| 7160379 | Hydrophobic sand treated with wax blend A method for making hydrophobic sand including coating sand with a wax blend so as to form a coated sand with advanced hydrophobic properties, wherein a weight ratio of the wax blend to total coated sand weight is about 0.05%–10%, and the wax blend includes a weig... | 01/09/2007 |
| 7135308 | Process for the production of ethanol from algae The present invention describes a process for the production of ethanol by harvesting starch-accumulating filament-forming or colony-forming algae to form a biomass, initiating cellular decay of the biomass in a dark and anaerobic environment, fermenting the biomass... | 11/14/2006 |
| 7121765 | Subsurface materials management and containment system Systems, components, and methods relating to subterranean containment barriers. Laterally adjacent tubular casings having male interlock structures and multiple female interlock structures defining recesses for receiving a male interlock structure are used to create... | 10/17/2006 |
| 7037423 | Method for removal and detoxication of dissolved metals in a rainwater discharge The present invention provides a water treatment apparatus and method for reducing toxicity in zinc containing acid stormwater runoff, the apparatus comprising a first filter layer of high calcium material a last filter layer comprising a drainpipe arrangement embed... | 05/02/2006 |
| 7029203 | Subsurface materials management and containment system, components thereof and methods relating thereto Systems, components, and methods relating to subterranean containment barriers. Laterally adjacent tubular casings having male interlock structures and multiple female interlock structures defining recesses for receiving a male interlock structure are used to create... | 04/18/2006 |
| 6948882 | Sensor system for buried waste containment sites A sensor system for a buried waste containment site having a bottom wall barrier and/or sidewall barriers, for containing hazardous waste. The sensor system includes one or more sensor devices disposed in one or more of the barriers for detecting a physical paramete... | 09/27/2005 |
| 6881010 | Systems for on site treatment and disposal of contaminated soils and sediments A system for the onsite storage, treatment and disposal of contaminated soils and sediments includes a trench that is excavated at the site. The trench is formed with a bottom surface that includes a sump reservoir and a sloped portion oriented to feed liquids into ... | 04/19/2005 |
| 6854929 | Isolation of soil with a low temperature barrier prior to conductive thermal treatment of the soil Freeze wells may be used to isolate an area for soil remediation. Freeze wells may form a frozen barrier around a treatment area. The frozen barrier may inhibit fluid from entering into the treatment area. The frozen barrier may also inhibit migration of contaminati... | 02/15/2005 |
| 6802672 | Leachate distribution system A waste collection site having a fluid distribution structure, and the structure and related method, the structure including a geocomposite for placement on and between levels of collected waste and at least one pipe extending up from the geocomposite and adapted to... | 10/12/2004 |
| 6379543 | Water treatment system Disclosed is a water treatment system (10) including: (a) a water permeable wall portion (12) defining a water treatment portion (18) of a waterway to be treated; and (b) a treating portion (20) retained in a desired position relative to the permeable wall por... | 04/30/2002 |
| 6290637 | Phosphate mineral-based reactive barrier containment system A phosphate mineral based reactive barrier system. Phosphate minerals are known to be sinks for heavy metal contaminants. The reactive barrier prevents the release of contaminants from waste materials, sediments or dredged materials via reaction with the ... | 09/18/2001 |
| 6071043 | System for securing landfills The invention provides a method for securing waste landfills so as to prevent seepage of fluids into natural formations. A coating composition containing rubber crumb is sprayed onto polymeric liners enclosing the waste so as to encapsulate the ends or se... | 06/06/2000 |
| 5857810 | In-situ chemical barrier and method of making A chemical barrier is formed by injecting a suspension of solid particles or colloids into the subsurface. First, a stable colloid suspension is made including a surfactant and a non-Newtonian fluid. This stable colloid suspension is characterized by coll... | 01/12/1999 |
| 5857809 | Method for the sealing of soil formations A method for the sealing of soil formations, a mineral sealing layer consisting of cohesive soil and of an aggregate being applied to the soil formation and then being compacted mechanically, the aggregate used being dry, sewage or water sludge with a dry... | 01/12/1999 |
| 5765965 | Apparatus for in situ installation of underground containment barriers under contaminated lands An apparatus for constructing a subsurface containment barrier under a waste site disposed in soil is provided. The apparatus uses a reciprocating cutting and barrier forming device which forms a continuous elongate panel through the soil having a defined... | 06/16/1998 |
| 5681130 | Active cooling-based surface confinement system for thermal soil treatment A thermal barrier is disclosed for surface confinement with active cooling to control subsurface pressures during thermal remediation of shallow (5-20 feet) underground contaminants. If steam injection is used for underground heating, the actively cooled ... | 10/28/1997 |
| 5635075 | Method of removing organic contaminants from air and water with organophilic, quaternary phosphonium ion-exchanged smectite clays An quaternary phosphonium ion-exchanged clay and method of removing organic contaminants from air and/or water, by contacting the contaminants in the air or water with a quaternary phosphonium organo-clay. The clay is prepared by ion-exchange of an ion-ex... | 06/03/1997 |
| 5608137 | Polymer gel barrier containing microorganisms for containment of hazardous waste A method of containing and remediating contaminants within the soil includes the step of placing a gel barrier into the soil for containing the contaminants. The gel barrier and the soil contained therein define the containment zone. Microorganisms capabl... | 03/04/1997 |
| 5591115 | Barrier for blocking movement of contaminants within an aggregate particulate substrate A system and method of preventing groundwater contamination by a plume of liquid born toxic contaminants that includes establishing a dry barrier between a plume of liquid contaminants and the water table to immobilize the toxic contaminants. The dry barr... | 01/07/1997 |
| 5562586 | Landfill cap and method of sealing landfill A cap for sealing waste in a landfill is prepared by disposing a fill layer atop the waste and applying a fast-curing elastomeric material to the fill layer to provide a monolithic, continuous, elastomeric coating thereupon. The elastomeric material is de... | 10/08/1996 |
| 5520482 | Barrier to prevent spread of soil contamination A soil barrier to prevent the spread of harmful substances in the soil or ground water based on humic substances precipitated in the soil and a process for its creation.... | 05/28/1996 |
| 5502268 | Method for sealing of a mass of waste A new method for sealing off a mass of waste which comprises surrounding the mass of waste, stabilized waste or its placement side with a least one substantially continuous layer of porous material, the layer defining a substantially continuous, waste-enc... | 03/26/1996 |
| 5405225 | Method of sanitizing a polluted area, particularly an unregulated contaminant-containing refuse dump The method of sealing a polluted area containing pollutants to prevent transport of the pollutants from the polluted area includes forming a sealing barrier layer around the polluted area underneath and/or next to it by feeding a liquid sealing material i... | 04/11/1995 |
| 5372459 | Process for producing a landfill A process for producing a landfill from a specified landfill site is disclosed. In the first step of this process, leachate from the landfill site is collected. Thereafter a specified shredded material is contacted with the leachate to age it, the horizon... | 12/13/1994 |
| 5370478 | Process for isolating contaminated soil Process for hydraulically guiding a layer of gellable grout solution (containing water-soluble Al or Fe salts, alkali metal silicates, or silica sols) to form a sealed confining layer beneath or around a contaminated zone beneath the water table which pre... | 12/06/1994 |
| 5368412 | Use of a gelling composition in waste treatment disposal or solar ponds A process for preventing the seepage of hazardous waste material in a waste treatment pond or the loss of heat and evaporation of water in a solar pond comprises controlling the migration of a gelling composition where the density of the gelling compositi... | 11/29/1994 |
| 5260502 | Stabilization of petroleum contaminated soil with lime in underground storage tank applications Hydrocarbon contaminated soil from the excavation of a leaking underground storage tank is physically and chemically stabilized by combining the soil with a lime substance which is hydrated to form a flowable mixture. This mixture can then be used to fill... | 11/09/1993 |
| 5246310 | Process for producing a landfill A process for producing a landfill from a specified landfill site is disclosed. In the first step of this process, leachate from the landfill site is collected. Thereafter a specified shredded material is contacted with the leachate to age it, the horizon... | 09/21/1993 |
| 5201608 | Process for sealing soil formations, especially waste dumps A process for sealing soil formations, especially for sealing the base of a waste dump or encapsulating waste dumps or old sources of pollution. By this process, sewage sludge or river mud is mixed with water absorbent aggregate that is approximately 30-7... | 04/13/1993 |
| 5174378 | Microbial manipulations of surfactant-containing foams to reduce subterranean formation permeability A microbial system is provided for selective plugging of permeable regions of a subterranean formation, for use in conjunction with injection of surfactant-containing foams. Bacteria indigenous to the target formation are isolated, and selected for abilit... | 12/29/1992 |
| 5133991 | Method for applying a biodegradable protein foam to a substrate A method and apparatus for covering substrates such as landfills, sewage, contaminated soil, sludge deposits, compost piles and the like. A protein based solution, preferably mixed from a foam concentrate, is mixed with air in a foam production nozzle and... | 07/28/1992 |
| 5114275 | Process and waste pit liner for improved hydrophobic waste storage A process for improved hydrophobic waste storage is described wherein a latex comprising a preformed, high molecular weight polymer having a high affinity for hydrophobic liquids, is sprayed on the waste prior to admixing an inorganic matrix material. Alt... | 05/19/1992 |
| 5056960 | Layered geosystem and method A layered geosystem and method employ at least one layer of geotextile which has at least one surface friction-treated with a treatment material in a manner described herein. Contact of the friction-treated surface with an adjacent layer of, for example, ... | 10/15/1991 |
| 5002431 | Method of forming a horizontal contamination barrier A method of forming a lateral barrier to downward flow of fluid contaminants through a porous subterranean formation. A fluid medium capable of maturing into an impermeable material over a period of time, such as an aqueous composition capable of forming ... | 03/26/1991 |
| 5000618 | Method to prevent clogging of geotextiles and geonets A process for preventing biological fouling and/or clogging of a geotextile used in a landfill leachate collection system comprising distributing chunks of biocide-containing material on the geotextile, and a landfill having a leachate collection system c... | 03/19/1991 |
| 4983075 | Process for producing an acid-resistant barrier seal in soil, and concrete usable for this purpose A process for producing a barrier seal in soil which must be in contact with an acidic water which has a pH below 5.5 wherein a trench is excavated in the soil and the trench produced is filled with a sealing concrete including water, a clay and an acid-r... | 01/08/1991 |
| 4981394 | Method of sealing permeable unconsolidated materials Methods of forming layers of material upon or below the earth's surface and above the water table to prevent or effectively inhibit the flow of groundwaters through such laters of initially unconsolidated materials. Chemical components are added to materi... | 01/01/1991 |
