Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 6093372 | Oxygen flow control for gasification The system for controlling oxygen flow in a gasification process of the instant invention comprises a suction control valve located between the oxygen source and the oxygen compressor. The suction control valve is adapted in order to open to deliver oxyge... | 07/25/2000 |
| 6086722 | Minimizing evaporator scaling and recovery of salts during gasification A process for minimizing evaporator scaling during the recovery of liquids and solids from the aqueous effluent discharged during a partial oxidation gasification, wherein the aqueous effluent contains ammonium chloride (NH4 Cl). The aqueous ef... | 07/11/2000 |
| 6036748 | Black water flash and vapor recovery method The invention is a process of degassing and cooling a hot black water slurry. The hot black water slurry is obtained from syngas scrubbers. The black water slurry is cooled and degassed by exposing the black water slurry to a vacuum under conditions suffi... | 03/14/2000 |
| 6027634 | Process for stable aqueous asphaltene suspensions A petroleum derived oil is subjected to propane deasphalting to yield a solid asphaltene residue. The residue is crushed to 425 micron diameter particle or less at a crushing temperature in the range of 77° F. to 122° F. The asphaltene particles are sus... | 02/22/2000 |
| 6006855 | Borehole seismic detector system employing stabilizers Systems are disclosed for securing near vertically deployed seismic detector systems in a cased well borehole from oscillatory motion during a seismic survey. In one embodiment a generally cylindrical body member of an unsymmetrical shape having one flat ... | 12/28/1999 |
| 6007702 | Process for removing water from heavy crude oil A process for removing water from heavy crude oil uses an inorganic salt which is a Group IA or Group IIA metal halide or nitrate salts. The crude oil is in the form of a water-in-oil emulsion with water content of 8% (by weight) or less. The salt is stir... | 12/28/1999 |
| 6004379 | System for quenching and scrubbing hot partial oxidation gas A scrubbing tower and high pressure settler assembly, and the process for using same to remove particulates from a hot partial oxidation gas stream is disclosed. The scrubbing tower and high pressure settler assembly has a dip tube, a bottom portion, a to... | 12/21/1999 |
| 6001142 | Polyoxyalkylene urethane and fuel composition containing same A hydrocarbyl polyoxyalkylene urethane of the general formula ##STR1## wherein R1 is an alkyl, an alicyclic or an alkylalicyclic radical having from about 4 to about 30 carbon atoms or an alkylaryl where the alkyl group is from about 4 to ... | 12/14/1999 |
| 6001886 | Process for stable aqueous asphalt emulsions A petroleum derived oil is subjected to crude oil distillation or propane deasphalting to yield a viscous asphalt residue. The viscous asphalt residue is combined with an aqueous emulsifier comprising an EO-PO-EO block copolymer and passed through a mixer... | 12/14/1999 |
| 5993558 | Removal of fluoride-containing scales using aluminum salt solution Fluoride-containing scale can be removed from metal surfaces such as titanium, titanium alloys, nickel alloys, and stainless steel by contacting the metal surfaces with an aqueous salt solution of an inorganic acid, including its hydrates. The cationic po... | 11/30/1999 |
| 5993667 | Process for removing selenium from refinery process water and waste water streams The present invention provides an efficient and highly effective method of removing dissolved selenium from a variety of refinery process water and wastewater streams. The present invention also provides a new and effective method of oxidizing selenium an... | 11/30/1999 |
| 5983822 | Polygon floating offshore structure A polygon shaped floating offshore structure for use in oil or gas drilling or production operations, having apertures in its sides in order to reduce the movement of the structure as a result of undersea currents. The structure contains a production plat... | 11/16/1999 |
| 5972207 | Catalytic reforming process for heavy cracked naphtha A large pore volume catalyst was used for reforming heavy cracked naphtha. The average pore diameter is preferably between about 110 to 150 Angstroms. Improved catalytic stability and improved liquid yield was achieved. As a result of the improvement a 10... | 10/26/1999 |
| 5968348 | Hydroconversion process employing a phosphorus loaded NiMo catalyst with specified pore size distribution A process for converting a charge of heavy hydrocarbons containing components boiling above 1000° F. to a product containing a decreased content of components boiling above 1000° F. and decreased sediment content employing a NiMo catalyst having a speci... | 10/19/1999 |
| 5952233 | Test kit for measuring the level of carboxylate anion in engine coolant A colorimetric method is provided for determining the presence or absence of a corrosion-inhibitory level of carboxylate anion in used aqueous engine coolant.... | 09/14/1999 |
| 5948971 | Corrosion monitoring system A corrosion sensor for sensing corrosion in a pipeline. The sensor includes a housing and a device for joining the housing to a wall of an enclosure that receives a fluid. The sensor also includes a rupture member which extends across a portion of the hou... | 09/07/1999 |
| 5941459 | Fuel injector nozzle with protective refractory insert The fuel injector nozzle for a gasifier includes a protective refractory sheath that is flush mounted at a downstream end proximate the nozzle outlet portion. The refractory insert is of annular form to surround the nozzle outlet. The annular refractory m... | 08/24/1999 |
| 5935419 | Methods for adding value to heavy oil utilizing a soluble metal catalyst A process for the upgrading a heavy oil to a lighter oil having a higher API gravity than the heavy oil is disclosed. The process includes reacting an emulsion of the heavy oil with water in the presence of a catalyst and a hydrogen containing gas to give... | 08/10/1999 |
| 5935276 | Method of impeding the evaporation of a solvent and compositions useful therein A method of impeding the evaporation of a solvent by at least partially dissolving a solvent soluble polymer in the solvent in sufficient amounts so as to impede the evaporation of the solvent is disclosed. In one embodiment the soluble polymer may be sel... | 08/10/1999 |
| 5928501 | Process for upgrading a hydrocarbon oil A process for treating a hydrocarbon oil feed to reduce total acid number (TAN) and increase API gravity employs a catalyst which includes one or more metals of non-noble Group VIII of the periodic table (e.g., iron, cobalt and nickel), and at least one m... | 07/27/1999 |
| 5928499 | Hydroconversion process employing catalyst with specified pore size distribution, median pore diameter by surface area, and pore mode by volume A process for hydrotreating a hydrocarbon feed containing components boiling above 1000° F. and sulfur, metals and carbon residue utilizing a heterogeneous catalyst having a specified pore size distribution, median pore diameter by surface area and pore ... | 07/27/1999 |
| 5928410 | Supported gas separation membrane, process for its manufacture and use of the membrane in the separation of gases A supported gas separation membrane for separating a particular component from a mixture of gases, a process for its manufacture and the use of the membrane in the separation of gases are provided in which the supported gas separation membrane comprises (... | 07/27/1999 |
| 5925151 | Detergent additive compositions for diesel fuels A detergent additive composition for diesel fuel contains a low molecular weight polyisobutylene monosuccinimide of polyethylene polyamine in an aromatic hydrocarbon diluent. The detergent additive composition may be used to remove or prevent engine depos... | 07/20/1999 |
| 5904879 | Partial oxidation of waste plastic material An integrated liquefaction and gasification process converts bulk particulate halogen-containing waste plastic materials with minimal particle size reduction into a synthesis gas and a non-leachable, vitreous environmentally nontoxic slag. The process inv... | 05/18/1999 |
| 5884700 | Interior coating of gas well tubing A method and apparatus for treating the production tubing string of a flowing gas well is disclosed. The method includes introducing treatment fluid into the wellhead end of the production tubing string, allowing an applicator fall through the production ... | 03/23/1999 |
| 5883299 | System for monitoring diaphragm pump failure A diaphragm failure monitoring system for detecting leakage in a diaphragm of a diaphragm pump. The system includes a pump having an operating chamber containing a working fluid and a pumping chamber for pumping material into and out of the pump and a dia... | 03/16/1999 |
| 5868923 | Hydroconversion process An improved ebullated bed hydroconversion process is disclosed that utilizes a bimodal heterogeneous catalyst and a metal containing oil-miscible-catalysts compound to achieve a reduction in sediment, an increase in conversion, a reduction in the energy u... | 02/09/1999 |
| 5866091 | Method for minimizing hydrogen halide corrosion in a partial oxidation process The present invention relates to a method for minimizing hydrogen halide corrosion in quench gasifier during the non-catalytic partial oxidation reaction of a halogen-containing hydrocarbonaceous feed, to produce a hydrogen halide-containing synthesis gas... | 02/02/1999 |
| 5857519 | Downhole disposal of well produced water using pressurized gas A method and apparatus for the downhole disposal of the water component of production fluid while using gas lift techniques to lift the hydrocarbon component to the surface is disclosed. Separation of the hydrocarbon component and the water component take... | 01/12/1999 |
| 5859305 | Method for optimizing hydrogen fluoride alxylation and increasing process safety A method of regulating the concentration of onium in a liquid onium poly(hydrogen fluoride) composition utilized in a hydrogen fluoride catalyzed alkylation reaction for a given level of total airborne hydrogen fluoride is disclosed. Also disclosed is a m... | 01/12/1999 |
| 5856680 | Process for forming stable aqueous asphalt emulsions A petroleum derived oil is subjected to crude oil distillation or propane deasphalting to yield a viscous asphalt residue. The viscous asphalt residue is combined with an aqueous emulsifier comprising an EO-PO-EO block copolymer and passed through a mixer... | 01/05/1999 |
| 5851497 | Gasifier throat A gasifier (10) for partially combusting a carbonaceous fuel mixture in the combustion chamber (13) of the gasifier (10). The latter includes a water bath (26) into which the hot effluent or the products of combustion are immersed, including a synthetic g... | 12/22/1998 |
| 5837037 | Gas handling for plastics liquefaction The present invention relates to a method for removing high molecular weight high melting point hydrocarbon vapors from a hydrocarbon vapor offgas stream produced during the liquefaction of a solid waste plastic material to produce an oil that serves as a... | 11/17/1998 |
| 5827421 | Hydroconversion process employing catalyst with specified pore size distribution and no added silica A process for hydrotreating a charge hydrocarbon feed containing components boiling above 1000° F. and sulfur, metals, and carbon residue, to provide product containing decreased levels of components having a boiling point greater than 1000° F., decreas... | 10/27/1998 |
| 5813469 | Coupled downhole pump for simultaneous injection and production in an oil wheel An apparatus for the downhole production of hydrocarbons. The apparatus includes a first pump coupled to a second pump. The first pump is powered by injection fluid contained in the tubing string; thus, eliminating the need for electrical connection cable... | 09/29/1998 |
| 5806593 | Method to increase sand grain coating coverage A method for consolidating unconsolidated mineral particles in a subterranean petroleum formation penetrated by a well in fluid communication with at least a portion of the formation, including: a) introducing an effective amount of preflush into the formation... | 09/15/1998 |
| 5804078 | Method of removing water soluble organics from oil process water An improved method of removing water soluble organics from produced water is disclosed. In the method, a chemical, selected from the group consisting of sodium bisulfite, hydroxylamine hydrochloride, tallow amine, acetic acid, and combinations thereof, is... | 09/08/1998 |
| 5785721 | Fuel injector nozzle with preheat sheath for reducing thermal shock damage The operating life of a fuel injector nozzle for a gasifier is prolonged by shielding the fuel injector nozzle with a preformed protective insulating sheath before the fuel injector nozzle is installed inside a preheated reaction chamber of the gasifier. ... | 07/28/1998 |
| 5736491 | Method of improving the fuel economy characteristics of a lubricant by friction reduction and compositions useful therein A method of improving the fuel economy characteristic of a lubricant by friction reduction including mixing the lubricant with a C2 to C12 aliphatic carboxylate salt of molybdenum and a zinc dialkyldithiophosphate or zinc dialkyldith... | 04/07/1998 |
| 5656042 | Environmentally acceptable process for disposing of scrap plastic materials A pumpable slurry of shredded scrap solid carbonaceous plastic-containing material that contains associated inorganic matter in admixture with a comminuted aluminosilicate-containing material having noncombustible constituents is reacted by partial oxidat... | 08/12/1997 |
