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| Number | Title | Issue Date |
| 8034231 | Method for reducing hydrogen sulfide evolution from asphalt Hydrogen sulfide evolution from asphalt may be reduced or eliminated using an additive to act as a scavenger. Metal borate complexes when used as an additive in asphalt production, are an effective component in preventing or mitigating the evolution of hydrogen sulf... | 10/11/2011 |
| 7625479 | Petroleum hydrocarbon binder with reduced polycyclic aromatic hydrocarbon content A binder pitch material includes a petroleum pitch and asphalt fraction obtained from petroleum crude oil and has a significantly lower polycyclic aromatic hydrocarbon composition than a coal tar pitch having a like softening point. The pitch material is useful as a... | 12/01/2009 |
| 7438797 | Method of controlling asphaltene precipitation in a fluid A method of reducing the aggregation and deposition of asphaltene from a fluid containing asphaltene, such as crude oil, which method comprises the addition to the fluid of a compound of formula (1): wherein A is an optionally substituted ring system containing 6 to... | 10/21/2008 |
| 7435333 | Upgrading asphaltene containing oils A method for reducing the viscosity and surface wetting tendency of an oil containing hydrophilic aspaltenes comprises adding to said oil an amount of hydrophobic asphaltenes in the range of 1 to 80 wt % based on weight of the hydrophilic asphaltense of said oil. | 10/14/2008 |
| 7393449 | Petroleum hydrocarbon binder with reduced polycyclic aromatic hydrocarbon content A binder pitch material includes a petroleum pitch and asphalt fraction obtained from petroleum crude oil and has a significantly lower polycyclic aromatic hydrocarbon composition than a coal tar pitch having a like softening point. The pitch material is useful as a... | 07/01/2008 |
| 7341656 | Continuous oxidation and distillation process of heavier hydrocarbon materials The present invention provides a way to process heavier hydrocarbons in a relatively low cost and low pressure process using a combination of superheated steam and at least one reaction gas to i) promote oxidation and thermal reaction of heavier hydrocarbons, while ... | 03/11/2008 |
| 7279090 | Integrated SDA and ebullated-bed process This invention relates to a novel integrated method for economically processing vacuum residue from heavy crude oils. This is accomplished by utilizing a solvent deasphalter (SDA) in the first step of the process with a C3/C4/C5 solv... | 10/09/2007 |
| 7276284 | Carbon fiber reinforced coke from the delayed coker A number of properties of polygranular carbon bodies can be improved by small quantities of carbon fibers being incorporated in the formulations for production of such bodies. However, it has proven difficult for carbon fibers to be introduced into the green mixture... | 10/02/2007 |
| 7264878 | Laminated carbon foam sandwich for naval decking A laminate sandwich structure useful for, inter alia, decking for naval vessels, which includes a core formed of carbon foam having a ratio of compressive strength to density of at least about 7000 psi/g/cc. ... | 09/04/2007 |
| 7252755 | Viscosity modification of heavy hydrocarbons A low-viscosity, high-softening point heavy hydrocarbon material having a viscosity-reducing amount of at least one biodiesel material dissolved in a heavy hydrocarbon, and a method for producing such low-viscosity, high-softening point heavy hydrocarbon material ar... | 08/07/2007 |
| 7220348 | Method of producing high softening point pitch The present invention provides a way to increase the softening point of heavier hydrocarbons in a relatively low cost and low pressure process using superheated steam to i) increase the carbon yield of the heavier hydrocarbons, while simultaneously ii) removing vola... | 05/22/2007 |
| 7214308 | Effective integration of solvent deasphalting and ebullated-bed processing This invention relates to a novel method for economically processing vacuum residue from heavy crude oils by selectively processing the difficult and easy components in reactors whose design and operating conditions are optimized for the specific feed. The process u... | 05/08/2007 |
| 7172645 | Gas filtration and storage using activated carbon/graphite foam monoliths An apparatus for separating a first gas from a mixture of the first gas and at least one second gas comprises a housing having an inlet port and an outlet port and an adsorbent which is positioned in the housing. The adsorbent comprising a carbon based foam monolith... | 02/06/2007 |
| 7122113 | Method for solubilising asphaltenes in a hydrocarbon mixture Method for solubilising asphaltenes in an asphaltenes-containing hydrocarbon mixture by adding thereto an effective amount of a dendrimeric compound, and a hydrocarbon mixture comprising, in addition to hydrocarbons, asphaltenes and at least one dendrimeric compound... | 10/17/2006 |
| 7108780 | Oil desalting by forming unstable water-in-oil emulsions A method for determination for a given oil the relative stability of a water-in-oil emulsion that will be formed by that oil with water comprises measuring for the given oil the weight percent asphaltenes (A), total acid number (TAN), and ratio of the amount of naph... | 09/19/2006 |
| 7094331 | Viscosity modification of heavy hydrocarbons using dihydric alcohols A low viscosity, high softening point heavy hydrocarbon material having a viscosity reducing amount of at least one dihydric alcohol dissolved therein, and a method for producing such heavy hydrocarbon material, are disclosed. ... | 08/22/2006 |
| 7066997 | Coal tar and hydrocarbon mixture pitch and the preparation and use thereof A method of making the saturated aircraft brake preform using a coal tar pitch having a softening point in the range of about 160° C. to 240° C. Also, a product having natural rubber in the formulation and the method of making the product using a coal tar pitch ha... | 06/27/2006 |
| 7067050 | Petroleum hydrocarbon binder with reduced polycyclic aromatic hydrocarbon content A binder pitch material includes a petroleum pitch and asphalt fraction obtained from petroleum crude oil and has a significantly lower polycyclic aromatic hydrocarbon composition than a coal tar pitch having a like softening point. The pitch material is useful as a... | 06/27/2006 |
| 7067051 | Process for producing carbonized product used for producing activated carbon for electrode of electric double-layer capacitor, and organic material for carbonized product To produce a carbonized product used for producing activated carbon for en electrode of an electric double-layer capacitor, a condensed polycyclic aromatic pitch having an optical anisotropic rate Oa in a range of 1%≦Oa≦90% and a softening point Ts in a range of... | 06/27/2006 |
| 7036365 | Device for measuring the total pressure of a flow The invention relates to the measurement of the total pressure of a fluid flow, especially the total pressure of the airflow surrounding an aircraft. The invention proposes to replace a pitot tube with a device in which at least two fluid streams are taken off from ... | 05/02/2006 |
| 7033485 | Coal tar and hydrocarbon mixture pitch production using a high efficiency evaporative distillation process Described are methods that utilize high efficiency evaporative distillation to make a high softening point coal tar pitch, a quinoline insoluble-free and ash-free coal tar pitch having a desired softening point, and a mesophase coal tar pitch. Each of the methods us... | 04/25/2006 |
| 7018526 | Carbonized pitch moldings prepared from synthetic mesophase pitch and heat-soaked isotropic pitch The present invention provides carbonized pitch articles and methods for producing the same. Synthetic mesophase pitch is mixed with partially anisotropic pitch, which may be selected from heat-soaked isotropic pitch and heat-soaked mixtures of isotropic pitch and m... | 03/28/2006 |
| 7008526 | Processes for producing coke, artificial graphite and carbon material for negative electrode of non-aqueous solvent type secondary battery and pitch composition used therefor When a pitch composition prepared by mixing 100 parts by weight of mesophase pitch with 10 to 1,000 parts by weight of coal tar pitch, is heat-treated at a temperature of 500° C. or higher, it is possible to produce a high-density coke at a high yield while avoidin... | 03/07/2006 |
| 7005206 | Fuel cell assembly for portable electronic device and interface, control, and regulator circuit for fuel cell powered electronic device A fuel cell assembly including a membrane electrode assembly, an anode plate, a cathode plate, a removable fuel cartridge, and a fuel delivery system. The assembly includes an anode, a cathode, and a polymer electrolyte membrane having a fuel side and an oxygen side... | 02/28/2006 |
| 6916435 | Process of making graphite articles A process for preparing graphite articles is presented. In particular, the process includes employing a particulate fraction comprising at least about 35 weight percent coke, coal or combinations thereof having a diameter such that a major fraction of it passes thro... | 07/12/2005 |
| 6761818 | Heavy oil-solid composition and method for preparing the same The invention includes a compositon of matter comprising a heavy oil having dispersed therein surface modified solid wherein said surface modified solids comprise solids having adsorbed thereon air oxidized polar hydrocarbons from said heavy oil and wherein said sur... | 07/13/2004 |
| 6717021 | Solvating component and solvent system for mesophase pitch A solvating component for a solvated mesophase pitch. The solvated component includes a mixture of aromatic hydrocarbons having boiling points in the atmospheric equivalent boiling point range of about 285° to about 500° C. (about 550° F.-932° F.). At least 80% ... | 04/06/2004 |
| 6689295 | Carbonaceous porous body and method for producing the same The present invention provides a method of manufacturing an exfoliated graphite/phenol resin composite foam of a porosity of 50-95%, a density of 0.1-0.8 g/cm3, by forming under contact pressure or reduced pressure at a temperature of 140-200°... | 02/10/2004 |
| 6673234 | Combined process of low degree solvent deasphalting and delayed coking A combined process of low degree solvent deasphalting and delayed coking, which comprises feeding a deasphalting stock and a solvent into an extractor and making the yield of the deasphalted oil 70 wt %-95 wt %, and introducing a part or all of the deasph... | 01/06/2004 |
| 6652739 | Process for deasphalting residua by reactive recycle of high boiling material An improved process for deasphalting a residua feedstock by use of a short vapor residence time process unit comprised of a horizontal moving bed of fluidized and/or stirred hot particles. The vapor phase product stream from said process unit is passed to... | 11/25/2003 |
| 6582588 | High temperature, low oxidation stabilization of pitch fibers The present invention provides a process for thermosetting pitch fibers in reduced times, at low concentrations of oxygen and at higher temperatures than previously possible. Additionally, the present invention provides a pitch fiber which has an oxygen d... | 06/24/2003 |
| 6524468 | Heavy oil - solid composition and method for preparing the same The invention includes a compositon of matter comprising a heavy oil having dispersed therein surface modified solid wherein said surface modified solids comprise solids having adsorbed thereon air oxidized polar hydrocarbons from said heavy oil and where... | 02/25/2003 |
| 6478951 | Compatibilizer for crumb rubber modified asphalt A compatibilizer and process for use in making crumb rubber modified asphalt. The compatibilizer causes the crumb rubber to completely interact with the asphalt, thereby improving the rheological properties of the asphalt and reducing the tendency of pave... | 11/12/2002 |
| 6464856 | Separation of tars, oils and inorganic constituents from oil bearing sands or shales An improved process for the total separation and recovery of four constituents, namely, 1) insoluble pitches and tars also known as asphaltenes, 2) a kerosene based oil fraction, 3) clays and silts of less than 80 μm mesh and 4) sands of greater than 80 ... | 10/15/2002 |
| 6402934 | Recovery and transportation of heavy crude oils Novel amine-chelate complexes are useful in significantly reducing the viscosity of heavy crude oils, facilitating the recovery and transportation of such heavy crude oils. The amine-chelate complexes are formed by heating together an organic amine with a... | 06/11/2002 |
| 6361682 | Pelletization of petroleum resids Disclosed are an integrated process and plant for slurrying and gasification or combustion of a petroleum resid such as asphaltenes from to make a synthesis gas or steam and/or power. The resid is prilled into a gaseous medium as a liquid with a rotating ... | 03/26/2002 |
| 6342171 | Process of stabilizing a carbonaceous pitch-based foam A carbon-carbon composite material is made by providing an open-celled carbon foam preform, and densifying the preform with carbonaceous material. The open-celled carbon foam preform may be oxygen stabilized prior to carbonization, and the foam preform de... | 01/29/2002 |
| 6331245 | Petroleum resid pelletization Disclosed are a method and apparatus for making substantially spherical, homogenous petroleum resid pellets having a size range between 0.1 and 10 mm, a penetration of essentially 0, a softening point temperature from about 200° to about 400° F., a resi... | 12/18/2001 |
| 6291537 | Encapsulation of oxidants for pitch stabilization Controlled and thorough stabilization of pitch is provided by incorporating an oxidant into the pitch. In one embodiment of the invention, the oxidant is intimately mixed with the pitch. In another embodiment, the oxidant is encapsulated in a suitable enc... | 09/18/2001 |
| 6270653 | Method of controlling asphaltene precipitation in a fluid A method of controlling asphaltene precipitation in a fluid comprising the addition of a precipitation inhibitor to the fluid containing the asphaltene.... | 08/07/2001 |
