| Patent Number |
Title Of Patent |
Date Issued |
| 6413016 |
Methods of extracting liquid hydrocardon contaminants from underground zones |
July 2, 2002 |
| Methods of extracting liquid hydrocarbon contaminants from underground zones are provided. The methods are basically comprised of the steps of introducing a hot purge gas into an underground zone containing a pool of liquid hydrocarbon contaminants whereby light liquid hydrocarbons in an |
| 6296060 |
Methods and systems for producing off-shore deep-water wells |
October 2, 2001 |
| Methods of placing off-shore wells on production comprising the steps of separating a gas from oil or oil and water produced by the well, introducing the gas into the seawater surrounding the well at a depth where the temperature and pressure of the seawater are such that solid gas h |
| 6004519 |
Aluminum promoted hydrogenation of alkylation sludge for aluminum chloride recovery |
December 21, 1999 |
| The recovery of aluminum chloride from deactivated alkylation catalyst complexes by hydrogenation using hydrogen gas and an aluminum catalyst is disclosed. Using aluminum to catalyze the hydrogenation allows the reaction to proceed at a lower temperature and pressure while reducing the |
| 5733365 |
Process for preparing an improved low-dusting, free-flowing pigment |
March 31, 1998 |
| A process for preparing a low-dusting, free-flowing pigment which has not been subjected to any micronizing treatment comprising the steps of providing an inorganic pigment material; providing a source of water; forming a fine, well dispersed slurry of the pigment and water; milling |
| 5651864 |
Method for particle synthesis and recovery |
July 29, 1997 |
| A method for synthesizing a particulate product including electrostatically charging a fuel and/or oxidizer and/or ionizable inert gas present during the synthesis is provided. The method can include a step of collecting the particulate product which exploits the charged nature of the pa |
| 5605773 |
Lithium manganese oxide compound and method of preparation |
February 25, 1997 |
| A method for manufacturing Li.sub.2 M.sub.b Mn.sub.2-b O.sub.4 comprising the steps of providing LiM.sub.b Mn.sub.2-b O.sub.4 ; providing a source of lithium; dissolving lithium from the lithium source in a liquid medium in which lithium generates solvated electrons or the reduced form o |
| 5597664 |
Lithium manganese oxide compound and method of preparation |
January 28, 1997 |
| A method for manufacturing Li.sub.2 Mn.sub.2 O.sub.4 which comprises the steps of providing LiMn.sub.2 O.sub.4 ; providing a lithium salt; forming a solution or suspension of the LiMn.sub.2 O.sub.4 and lithium salt in a liquid medium; and adding a reducing agent to the solution or suspen |
| 5597515 |
Conductive, powdered fluorine-doped titanium dioxide and method of preparation |
January 28, 1997 |
| A process for producing a conductive, fluorine-doped titanium dioxide product which is doped throughout, said process comprising the steps of: (a) reacting the precursors in a system to form fluorine-doped TiO.sub.2, said precursors consisting essentially of a titanium alkoxide and a |
| 5573744 |
Method for enhancing production of titanium dioxide |
November 12, 1996 |
| A method and apparatus for producing TiO.sub.2 by reacting O.sub.2 and TiCl.sub.4 in a reactor tube wherein pressure fluctuations in the flow of fluids through the reactor tube are sensed and output signals are generated proportional to the sensed pressure fluctuations. The flow of at |
| 5571855 |
Attenuation of polymer substrate degradation due to ultraviolet radiation |
November 5, 1996 |
| Improved methods and polymer compositions are provided whereby ultraviolet radiation degradation of substrates formed of the compositions is attenuated.In accordance with the invention, ultraviolet scattering and absorbing particles having a particle size in the range of from about 0 |
| 5567754 |
Pigments with improved dispersibility in thermoplastic resins |
October 22, 1996 |
| Thermoplastic concentrates comprising inorganic pigments, such as titanium dioxide, treated with a partial ester polyol and unsaturated monocarboxylic acid treating agent, of the formula R(OH).sub.x COOR', wherein R is an alkyl or aryl radical containing from about 2 to about 20 carb |
| 5406018 |
Homogenous catalyst and process for liquid phase isomerization and alkylation |
April 11, 1995 |
| A discrete catalyst and processes for the isomerization of alkanes and the alkylation of isoalkanes under homogenous fluid conditions. The catalyst is formed by contacting, under fluid conditions, a homogenous fluid containing a paraffin hydrocarbon having from 4 to 12 carbon atoms with |
| 5391077 |
Drum oven |
February 21, 1995 |
| The invention discloses a simply designed oven which uses forced air convection as a heating mechanism. One or more drums can be installed in the oven over a catch basin of sufficient volume to include the contents of at least one drum. A gear or similar pump is provided to agitate the |
| 5316697 |
Conductive, particulate, fluorine-doped zinc oxide |
May 31, 1994 |
| An inventive process for forming a conductive, particulate, fluorine-doped, zinc oxide product which is doped throughout. The process comprises the step of reacting vapor phase reactants in a vapor phase oxidation system and at a temperature sufficient to form the conductive, particulate |
| 5271851 |
Integrated treatment system for refinery oily sludges |
December 21, 1993 |
| A process for the treatment of refinery oily sludges to produce an oily fraction that is reprocessed in the refinery into (i) salable products and (ii) a solid residue meeting environmental regulatory agency requirements for disposal in non-hazardous solid waste landfills. The process in |
| 5215735 |
Co-production of hydrogen peroxide and a useful ester |
June 1, 1993 |
| A process for co-producing hydrogen peroxide and another useful product, namely either an oxalate ester or a carbonate ester product, is provided The process comprises reacting a saturated monohydric alcohol with carbon monoxide and a quinone to form an oxalate ester or a carbonate ester |
| 5169618 |
Process for producing hydrogen peroxide |
December 8, 1992 |
| The present invention provides a novel process for producing hydrogen peroxide. The inventive process utilizes an aqueous liquid reaction medium, a gaseous reactant stream comprising oxygen gas and hydrogen gas, and a catalyst bed comprising a catalyst which is effective for catalyzing |
| 5162166 |
Devices providing electrical energy from fuel/oxygen mixtures |
November 10, 1992 |
| The present invention provides improved devices for the production of electrical energy from mixtures of oxygen (i.e., pure oxygen, air, or a similar source of free oxygen) and fuel (i.e., hydrogen and/or a hydrogen-yielding fuel). The devices generally comprise: a first electrode me |
| 5160084 |
Method for adhesively bonding a rail-tie fastening assembly to a wooden railway tie |
November 3, 1992 |
| A rail-tie fastening assembly for connecting a rail having a rail flange to a tie comprising a rail seat assembly and a rail anchor. Th rail seat assembly is connectable to the tie and includes an anchor slot and a seat hook assembly. The seat hook assembly is adapted to extend a distanc |
| 5120524 |
Co-production of hydrogen peroxide and a useful ester |
June 9, 1992 |
| A process for co-producing hydrogen peroxide and another useful product, namely either an oxalate ester or a carbonate ester product, is provided. The process comprises reacting a saturated monohydric alcohol with carbon monoxide and a quinone to form an oxalate ester or a carbonate este |
| 5009772 |
Solvent extraction process |
April 23, 1991 |
| A solvent extraction process for separating a heavy hydrocarbon feedstock material into its various component parts. The process comprises the utilization of pressure reduction to enhance the separation and recovery of a deasphalted oil product comprising substantially the lower molecula |
| 4805413 |
Process for cryogenically separating natural gas streams |
February 21, 1989 |
| The present invention relates to an improved process for the recovery, individually, of natural gas liquids methane and nitrogen from a gaseous feed stream such as natural gas without the need for auxiliary refrigeration and without or with only minimal need for supplemental compress |
| 4758258 |
Process for recovering helium from a natural gas stream |
July 19, 1988 |
| An improved process for cryogenically separating a helium-bearing natural gas stream comprising subjecting the natural gas stream to a sequence of alternating cooling and separating steps wherein one or more process-derived streams are utilized to effect cooling of the natural gas st |
| 4756897 |
Process for preparing concentrated byproduct nitrate solutions |
July 12, 1988 |
| A process is provided for preparing concentrated aqueous solutions of byproduct nitrate compounds from dilute aqueous streams containing said byproduct nitrate compounds, calcium ions and anionic species capable of reaction therewith at elevated temperatures. The process provides for the |
| 4740294 |
Method for sequentially co-processing heavy hydrocarbon and carbonaceous materials |
April 26, 1988 |
| A method for sequentially co-processing heavy hydrocarbon materials and carbonaceous materials comprising first subjecting the heavy hydrocarbon material in the presence of a disposable metal catalyst to produce and separate therefrom a first distillate stream and a first non-distillable |
| 4700568 |
Pulse accumulator network adapted for use in a flow monitoring system |
October 20, 1987 |
| A pulse accumulator network for receiving a plurality of pulse trains wherein each pulse train includes a plurality of pulses. The pulse accumulator network accumulates the pulses in each of the received pulse trains and the pulse accumulator network outputs each of the accumulated c |
| 4664788 |
Multi-stage coal liquefaction and fractionation method |
May 12, 1987 |
| A multi-stage coal liquefaction method in which coal is slurried with a primary light solvent, such as toluene, hexane and/or cyclohexane, and a process-derived primary heavy solvent. The coal-primary solvent slurry is treated under coal-liquefying conditions to form a first feed solutio |
| 4629554 |
Coal liquefaction with coal tar solvent |
December 16, 1986 |
| A method of liquefying coal in which coal is mixed with a process solvent comprising at least partially hydrogenated coal tar material to produce a coal-solvent slurry. This slurry is treated under coal-liquefying conditions, preferably including a hydrogen atmosphere and elevated te |
| 4562739 |
Production monitoring system |
January 7, 1986 |
| A monitoring system utilizing an ultrasonic transducer wherein the power level of the transducer operating signals is raised while maintaining the gain about unity for permitting the use of relatively longer signal paths between a signal generator and the transducer. |
| 4522723 |
Process for the removal and recovery of heavy metals from aqueous solutions |
June 11, 1985 |
| A process is provided for reducing the concentration of water soluble ionic heavy metal species and sulfate ions in aqueous waste solutions containing the same. The process comprises passing said waste solution through a treatment zone containing a porous matrix on which are retained |
| 4522222 |
Non-plugging injection valve |
June 11, 1985 |
| A valve for injecting fluid into a conduit carrying a slurry subject to separation to form deposits capable of plugging openings into the conduit. The valve comprises a valve body that is sealed to the conduit about an aperture formed through the wall of the conduit to receive the fluid |
| 4519913 |
Process for the removal and recovery of selenium from aqueous solutions |
May 28, 1985 |
| A process is provided for reducing the concentration of water soluble ionic selenium species in aqueous waste solutions containing the same. The process comprises passing said waste solution through a treatment zone containing a porous matrix on which are retained populations of at least |
| 4519912 |
Process for the removal of sulfate and metals from aqueous solutions |
May 28, 1985 |
| A process is provided for reducing the concentrations of water soluble ionic selenium species, sulfate ion and ionic heavy metal species in aqueous waste solutions containing the same. The process comprises passing said waste solution through a treatment zone containing a porous matrix o |
| 4481503 |
Production monitoring system |
November 6, 1984 |
| A production monitoring system wherein the velocity of fluid flowing through a monitored flowline is plotted with respect to time for a period of time sufficient to establish a repeatable pattern (production flow characteristics profile) and wherein an alarm value and an alarm delay |
| 4415442 |
Process for the separation of entrained organic fluids from gaseous streams in a coal deashing s |
November 15, 1983 |
| A process for the prevention of the deposition of entrained soluble coal products from vaporous solvent recovered from a heavy fraction comprising insoluble coal products and some solvent and soluble coal products. The heavy fraction is produced in a coal deashing system employing solven |
| 4406663 |
Process for concentration of slurries comprising insoluble coal products |
September 27, 1983 |
| A process for producing a flowable concentrated aqueous slurry of insoluble coal products from a dilute slurry of insoluble coal products. The dilute slurry is concentrated to form a nonflowable concentrate having a solids level in excess of 65 weight percent. The nonflowable concentrate |
| 4402919 |
Process for the regeneration of mineral acids used to solubilize phosphate ores |
September 6, 1983 |
| A process for solubilizing uranium and other values in an ore containing the same together with aluminum and phosphorus and effecting regeneration of a mineral acid employed to solubilize the ore. The regeneration is effected by heating the spent acid solution resulting from solubilizati |
| 4374015 |
Process for the liquefaction of coal |
February 15, 1983 |
| A process for producing and then separating distillable and substantially non-distillable coal liquefaction products into various fractions employing a series of extraction solvents. At least one fraction comprises a portion of the non-distillable coal liquefaction products and is su |
| 4361192 |
Borehole survey method and apparatus for drilling substantially horizontal boreholes |
November 30, 1982 |
| A borehole survey method and apparatus for use in drilling substantially horizontal boreholes through a mineral deposit wherein a dip accelerometer, a roll accelerometer assembly and a fluxgate are disposed near the drill bit, which is mounted on a bent sub, and connected to a surfac |
| 4313819 |
Process for recovering deashing solvent from insoluble coal products |
February 2, 1982 |
| A process for effecting deashing solvent recovery from insoluble coal products and preparing a slurry of the insoluble products. An elevated temperature and pressure stream comprising insoluble coal products and deashing solvent is admixed with a makeup liquid to dilute the stream. The |
| 4288125 |
Mining apparatus having an improved coupling assembly |
September 8, 1981 |
| A mining apparatus for excavating material from an earth formation having a miner which is removably connectable to a carrier by a coupling assembly, the mining apparatus including other carriers which are interconnected by the coupling assembly of the present invention. The coupling ass |
| 4283371 |
Process for the production of aluminum chloride and related products |
August 11, 1981 |
| A continuous process for recovering substantially pure aluminum chloride from chlorination products of aluminum ore. The chlorination products are contacted with a first selective solvent to dissolve a substantial portion of the aluminum chloride and some ferric chloride. The solvent is |
| 4279869 |
Process for recovering concentrated, purified tungsten values from brine |
July 21, 1981 |
| A process for recovering concentrated, purified tungsten values, such as ammonium paratungstate, from a brine containing minor amounts of soluble tungsten and a substantial concentration of impurities, the brine having a pH in the range of from about 7.0 to about 8.5. In general, the pro |
| 4279705 |
Process for oxidizing a metal of variable valence by constant current electrolysis |
July 21, 1981 |
| A process for oxidizing a metal of variable valence to a higher valence state by electrochemical means. More particularly, a process for oxidizing a metal of variable valence, such as, for example, uranium or vanadium contained in wet process phosphoric acid to a higher valence state for |
| 4272343 |
Process for the electrolytic reductive leaching of ilmenite ore |
June 9, 1981 |
| A process for beneficiating ilmenite ore using electrolytic reduction. The ilmenite ore is admixed with an acidic solution to form a mixture. The mixture is electrolytically reduced to convert at least a portion of any ferric iron that is present to ferrous iron. The acidic solution diss |
| 4262964 |
System for detecting interfaces between mineral seams and the surrounding earth formations |
April 21, 1981 |
| The present invention contemplates a system for detecting an interface between a mineral seam and the surrounding earth formation utilizing a radiation source and a radiation receiver mounted on a miner having a positionable cutter assembly. As the miner is moved into the coal seam, a |
| 4254993 |
Mining apparatus |
March 10, 1981 |
| An improved mining apparatus for excavating material, such as coal, for example, from an earth formation, such as a coal seam, for example, wherein a miner, having a forward and a rearward cutter, is guided through the coal seam and excavates a borehole therein, the borehole being filled |
| 4249951 |
Process for utilizing mineral-containing residue from coal liquefaction processes |
February 10, 1981 |
| A process for utilizing mineral-containing residue from coal liquefaction processes to produce a hydraulic cement. The residue is mixed with siliceous and calcareous matereals and compacted. The compacted solids are introduced into a kiln and fired to produce hydraulic cement clinker. Th |
| 4244812 |
System for producing a powdery composition comprising coal products in a coal deashing process |
January 13, 1981 |
| An improved system for deashing coal liquefaction products wherein a feed mixture (including a deashing solvent, soluble coal products and insoluble coal products) is separated in a first separation zone into a first light fraction and a first heavy fraction (including insoluble coal pro |
| 4243494 |
Process for oxidizing a metal of variable valence by controlled potential electrolysis |
January 6, 1981 |
| A process for oxidizing a metal of variable valence to a higher valence state by electrochemical means. More particularly, a process for oxidizing a metal of variable valence, such as, for example, uranium or vanadium contained in wet process phosphoric acid to a higher valence state for |
