Famous Patents
William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7323342 | Method for improving 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 fraction of the oil that is most strongly adsorbed on a silica gel column success... | 01/29/2008 |
| 7244364 | FCC-CFD cat' fine desalting: a method and system for separating hydrocarbons and extracting catalyst fines from a slurry oil/catalyst fines/diluent mixture The present invention comprises a method for separating hydrocarbons from catalyst fines in a slurry oil/catalyst fines/diluent mixture (SCDM) comprising the steps of removing SCDM from a slurry oil storage tank and combining the SCDM with crude oil entering a desal... | 07/17/2007 |
| 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 |
| 7097759 | Carbonyl, thiocarbonyl or imine containing compounds as asphaltene dispersants in crude oil A method for dispersing asphaltenes in a petroleum product by adding to the petroleum product 0.001% to 20% of at least one compound having formula (V) wherein R14 is C15–C21 al... | 08/29/2006 |
| 7014773 | Demulsification of emulsions by socillatory mixing The invention includes a method for demulsification of water-in-oil emulsions, oil-in-water emulsions, and mixtures of water-in-oil and oil-in-water emulsions by oscillatory mixing of the emulsions. ... | 03/21/2006 |
| 7008536 | Oil desalting and dewatering The invention includes a method for dewatering and/or desalting a water-in-oil emulsion comprising introducing a plurality of streams of the emulsion into the electrostatic field under opposed flow whereby the water coalescence is enhanced. The invention also includ... | 03/07/2006 |
| 6599949 | Aromatic sulfonic acid demulsifier for crude oils The invention is directed towards a chemical demulsifier formulation comprising an alkyl aromatic sulfonic acid additive with at least 16 carbon atom alkyl group and at least two 6 carbon-ring aromatic group and a co-additive selected from the group consi... | 07/29/2003 |
| 6489368 | Aromatic sulfonic acid demulsifier for crude oils The invention is directed towards a chemical demulsifier formulation comprising an alkyl aromatic sulfonic acid additive with at least 16 carbon atom alkyl group and at least two 6 carbon-ring aromatic group and a co-additive selected from the group consi... | 12/03/2002 |
| 6228239 | Crude oil desalting method In one embodiment, the invention is related to a process for desalting crude oil that requires less wash water than conventional desalting methods. In the preferred embodiment of the invention, a chemical demulsifier formulation comprising an emulsion-bre... | 05/08/2001 |
| 6168702 | Chemical demulsifier for desalting heavy crude The chemical demulsifier formulation has the formula: ##STR1## wherein R1 is H or an alkoxide of from 5 to about 20 carbon atoms; x is an integer of from about 8 to about 22 when R1 is hydrogen and from about 2 to about 5 when R... | 01/02/2001 |
| 6120678 | Desalting adjunct chemistry Improved performance in the phase separation of aqueous brines from hydrocarbons within an electrostatic desalter operation is obtained by the addition to the crude oil emulsions entering the desalter of an effective asphaltene dispersing amount of an alk... | 09/19/2000 |
| 6113765 | Methods for enhanced resolution of hydrocarbon continuous emulsions or dispersions with conductivity modifiers A method of increasing the efficiency of the electrostatic separation of a continuous hydrocarbon emulsions or dispersion by increasing the electrical conductivity of the emulsion or dispersion. An increase in electrical conductivity is provided with an e... | 09/05/2000 |
| 6060029 | Process for extraction of metals from aqueous ammoniacal solutions with beta-diketone extractants while maintaining a voltage potential to control entrainment of the aqueous layer into the organic layer Improvement in the process of extracting metals, particularly copper, from aqueous ammoniacal solutions with beta-diketone extractants dissolved in a water immiscible hydrocarbon diluent, such as a kerosene, in which the improvement comprises application ... | 05/09/2000 |
| 5965008 | Method for anodically decreasing conradson carbon content of petroleum streams The present invention provides for a method for decreasing the Conradson carbon content of petroleum streams by forming a mixture of the petroleum stream and an essentially aqueous electrolysis medium, and passing an electric current through the mixture a... | 10/12/1999 |
| 5942101 | Method for decreasing the conradson carbon number of petroleum streams The present invention provides for a process for electrochemically decreasing the Conradson carbon number of petroleum streams by contacting a Conradson carbon containing petroleum stream and an aqueous electrolysis medium with a low hydrogen overpotentia... | 08/24/1999 |
| 5911869 | Method for demetallating petroleum streams (LAW639) The present invention provides for a process for electrochemically demetallating petroleum streams by contacting a hydrocarbon-soluble metals containing petroleum stream and an aqueous electrolysis medium with a low hydrogen overpotential metal cathode at... | 06/15/1999 |
| 5879529 | Method for decreasing the conradson carbon content of petroleum feedstreams The present invention provides for a method of decreasing the Conradson carbon content of metal containing petroleum streams by forming a mixture of the Conradson carbon containing petroleum fraction and an aqueous electrolysis medium containing an electr... | 03/09/1999 |
| 5861089 | Electric field enhanced coalescence of emulsions comprising a silicon containing compound or silicon containing polymer A process for separating an emulsion into separate and easily recoverable phases. The process comprises exposing an emulsion comprising a discontinuous phase and a non-conducting continuous phase to an electric field thereby effecting coalescence of the d... | 01/19/1999 |
| 5746907 | Method to remove metals from residuals A method is provided to remove metals from a residual oil containing an initial amount of a selected metal, the method comprising the steps of: providing a vessel for exposing the residual oil to a DC electric field having a strength of about one kV/inch or gr... | 05/05/1998 |
| 5514252 | Method for reducing Conradson carbon content of petroleum streams The present invention provides a method for decreasing the Conradson carbon ("Concarbon") number of petroleum feedstreams by passing an electric current through a mixture of a petroleum stream, typically having a Conradson carbon residue of at least about... | 05/07/1996 |
| 5458752 | Apparatus and method for the desulfurization of petroleum by bacteria A method for treating petroleum with anaerobic microorganisms acting as biocatalysts that can remove sulfur atoms from hydrocarbon molecules, under anaerobic conditions, and then convert the sulfur atoms to hydrogen sulfide. The microorganisms utilized ar... | 10/17/1995 |
| 5411651 | Method for electrostatic liquid/liquid contactor The present invention is a method utilizing a liquid-liquid contactor which employs an electrostatic field to mix an organic phase with an aqueous phase and to coalesce the aqueous phase in order to accomplish extraction of a component present in the aque... | 05/02/1995 |
| 5326441 | Process for separating and concentrating gallium from an aqueous solution containing gallium, together with aluminum, zinc and copper Process for separating and concentrating gallium from an aqueous solution containing gallium, together with aluminium, zinc and/or copper, charactrized by the following combination of features: (a) preparation of a water-in-oil emulsion consisting of a ne... | 07/05/1994 |
| 4927511 | Method and device for breaking a disperse system in an electrochemical cell A method and a device for breaking an aqueous emulsion, wherein the emulsion flows through an electrochemical cell in which the small emulsified droplets combine in or on a working electrode to form larger separable droplets. The method can be applied in ... | 05/22/1990 |
| 4879014 | Removal of organic acids from freshly produced bitumen Process for removal of organic acids from bitumen comprising (a) Bitumen is diluted with low-density hydrocarbons. (b) A dilute solution of caustic soda in water is intimately mixed with the diluted bitumen. (c) A demulsifying chemical is added to weaken the interf... | 11/07/1989 |
| 4717480 | Method for separation of liquid mixture A method for separation of a liquid mixture wherein a component, intended to be separated, in the liquid mixture is concentrated in the interiors of particles having an average size of 0.1 to 10 μm; the particles are then transported to the surface of a ... | 01/05/1988 |
| 4634510 | Clarifying a contaminated fluid In the treatment of a contaminated liquid, an additive, such as finely divided adsorbent particles, is introduced into the liquid so that it combines physically, chemically or electrically with the contaminant to form a dispersion suspended in the liquid.... | 01/06/1987 |
| 4283290 | Purification utilizing liquid membrane with electrostatic coalescence A liquid membrane technique is disclosed for recovery of dissolved species from aqueous solutions thereof in which, by appropriate tailoring of the emulsion, electrostatic precipitation can be used successfully in the recovery of the species from the inte... | 08/11/1981 |
| 4238304 | Method for improved recovery of tall oil from black liquors Acidulated black liquor soap from a paper making process is subjected to an electrical potential gradient, in order to improve the yield of tall oil recoverable from the sludge portion of acidulated soap upon separation.... | 12/09/1980 |
| 4101563 | Process for refining crude oil An improved process for the refining of crude oil selected from the group of fats, animal and vegetable oils. The crude oil is reacted with aqueous alkali to produce a treated oil with reduced acidic content but containing finely dispersed, liquid-state a... | 07/18/1978 |
| 4031007 | Slop oil treating system A conductive interface forms between the oil and water layers in a coalescer apparatus for treating slop oil. The presence of this interface is detected by (a) a capacitance probe and (b) extensions on the coalescer plates. Changes in the feed and dischar... | 06/21/1977 |
