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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 6793712 | Heat integration system for natural gas liquefaction A pretreatment system for natural gas liquefaction employing heat integration for more efficient and effective natural gas temperature control. The pretreatment system expands the natural gas prior to acid gas removal. After acid gas removal, the natural gas is cool... | 09/21/2004 |
| 6779333 | Dual fuel power generation system A dual fuel power generation system employing a steam-mixed fuel and/or a gaseous fuel to power a turbine engine. The steam-mixed fuel is a gaseous mixture of a light hydrocarbon and steam. The steam-mixed fuel and gaseous fuel are delivered to the turbine engine (e... | 08/24/2004 |
| 6658890 | Enhanced methane flash system for natural gas liquefaction Natural gas liquefaction system employing an open methane cycle wherein the liquefied natural gas is flashed immediately upstream of the liquefied natural gas storage tank and boil off vapors from the tank are returned to the open methane cycle.... | 12/09/2003 |
| 6640586 | Motor driven compressor system for natural gas liquefaction Natural gas liquefaction system employing electric motors as compressor drivers. A combination of motors and steam turbines can be powered by a cogeneration plant and employed as drivers.... | 11/04/2003 |
| 6631626 | Natural gas liquefaction with improved nitrogen removal Natural gas liquefaction system employing a zeolite adsorbent for removing nitrogen from pretreated natural gas.... | 10/14/2003 |
| 6550542 | Fluid profile control in enhanced oil recovery Fluid profile in an oil field waterflood operation is controlled after water breakthrough occurs by injecting a hydrate forming hydrocarbon gas into the highly permeable breakthrough zone. The injected gas on contact with water in the breakthrough zone fo... | 04/22/2003 |
| 6547710 | Sulfonated rubber compositions and processes therefor and therewith A sulfonated, oxidized rubber composition and a neutralized, sulfonated, oxidized rubber composition are provided. The sulfonated, oxidized rubber composition, preferably a composition containing such sulfonated, oxidized rubber composition, can be used a... | 04/15/2003 |
| 6387986 | Compositions and processes for oil field applications Encapsulated crosslinking agents and gel-forming compositions are provided that can be utilized in oil field applications. Processes for producing said encapsulated crosslinking agents and said gel-forming compositions are also provided. In addition, a pr... | 05/14/2002 |
| 6289692 | Efficiency improvement of open-cycle cascaded refrigeration process for LNG production This invention concerns a method and an apparatus for improving the efficiency of an open-cycle refrigeration process for LNG production by the employment of a liquid expander to recover energy associated with the flashing of a pressurized liquid stream a... | 09/18/2001 |
| 6279653 | Heavy oil viscosity reduction and production This invention provides an apparatus and process for producing heavy crude oil from a subterranean formation penetrated by a well bore. In accordance with the process, an aqueous alkaline chemical solution is introduced into or formed in the well bore pen... | 08/28/2001 |
| 6186228 | Methods and apparatus for enhancing well production using sonic energy The present invention provides methods and apparatus for enhancing the production of liquid hydrocarbons from a subterranean formation penetrated by a well bore. The methods basically comprise placing one or more electric powered sonic energy transducers ... | 02/13/2001 |
| 6176314 | Low density well cement compositions and method of use Method to cement a well using low density well cement slurry compositions that are formed by the addition of a free-fluid inhibitor additive to a mixture comprising a hydraulic cement and water. Suitable free-fluid inhibitors are hydroxy ethyl cellulose p... | 01/23/2001 |
| 6158240 | Conversion of normally gaseous material to liquefied product The inventive process and associated apparatus are ideally suited for the small-scale liquefaction of natural gas. The current invention provides a methodology and apparatus for the liquefaction of normally gaseous material, most notably natural gas, whic... | 12/12/2000 |
| 6112549 | Aromatics and/or heavies removal from a methane-rich feed gas by condensation and stripping A process and associated apparatus for removing aromatics and/or higher molecular weight hydrocarbons from a methane-based gas stream comprising the steps of (a) condensing a minor portion of the methane-based gas stream thereby producing a two-phase stre... | 09/05/2000 |
| 6110357 | Passivated catalysts for cracking process A zeolite-containing cracking catalyst is passivated with compounds of boron and zirconium, and preferably also antimony. The thus-passivated cracking catalyst is employed in a process for catalytically cracking a hydrocarbon-containing oil feed. In anoth... | 08/29/2000 |
| 6070429 | Nitrogen rejection system for liquified natural gas This invention concerns a method and an apparatus for removing nitrogen and other low boiling point inorganic components from pressurized LNG-bearing streams and streams produced therefrom. The removal of such components is accomplished via a novel pressu... | 06/06/2000 |
| 6030928 | Polymers useful in the recovery and processing of natural resources The soluble polymers comprising an N-vinyl amide such as an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore. Polymers useful in the recovery of natural resources are prepared by polymerizin... | 02/29/2000 |
| 5737940 | Aromatics and/or heavies removal from a methane-based feed by condensation and stripping A process and associated apparatus for removing aromatics and/or higher molecular weight hydrocarbons from a methane-based gas stream comprising the steps of (a) condensing a minor portion of the methane-based gas stream thereby producing a two-phase stre... | 04/14/1998 |
| 5669234 | Efficiency improvement of open-cycle cascaded refrigeration process A process and apparatus for improving the efficiency of an open-cycle cascaded refrigeration process. Process efficiency is improved by the manner in which the compressed recycle stream is combined with the main process stream in the open refrigeration cy... | 09/23/1997 |
| 5654260 | Corrosion inhibitor for wellbore applications This invention concerns a corrosion-inhibitor nominally comprised of a phenolic compound and a hydroxide-bearing compound capable of imparting a pH of 9 to water, the inclusion thereof in aerated water-based fluids and foams, and the use of these fluids i... | 08/05/1997 |
| 5637635 | Water dispersible thickeners comprising hydrophilic polymers coated with particulate fatty acids or the salts thereof The present invention provides a water dispersible particulate polymer composition having improved water dispersibility comprising a water soluble particulate polymer which has been contacted with a finely divided particulate dispersant comprised of at le... | 06/10/1997 |
| 5611216 | Method of load distribution in a cascaded refrigeration process A process, apparatus and control methodology for transferring loads between drivers in adjacent refrigeration cycles in a cascaded refrigeration process has been developed thereby enabling more efficient driver operation. Load transfer is effected by cool... | 03/18/1997 |
| 5610124 | Tin/cerium compounds for lignosulfonate processing This invention concerns tin-, cerium-, and base-treated tin-bearing lignosulfonates, a process for their preparation from calcium lignosulfonate, and a process for the use thereof as drilling fluid additives.... | 03/11/1997 |
| 5600969 | Process and apparatus to produce a small scale LNG stream from an existing NGL expander plant demethanizer This invention concerns a novel process and apparatus for producing relatively small quantities of liquefied natural gas (LNG) by processing a side stream at a conventional NGL expander gas plant.... | 02/11/1997 |
| 5565416 | Corrosion inhibitor for wellbore applications This invention concerns a corrosion-inhibitor nominally comprised of a phenolic compound and a hydroxide-bearing compound capable of imparting a pH of 9 to water, the inclusion thereof in aerated water-based fluids and foams, and the use of these fluids i... | 10/15/1996 |
| 5554341 | Feed zone performance for a cat cracker This invention concerns an apparatus and process for effectively contacting oil, catalyst, and a gas. This invention has specific applications in the design and operation of catalytic cracking units and specifically, the processing and upgrading of heavy ... | 09/10/1996 |
| 5474671 | Process for removing oil from liquefied petroleum gas This invention concerns a process and apparatus for removing oil from liquefied petroleum gases. In a preferred embodiment, the activated carbon bed is pretreated with odorant thereby enabling oil to be removed from odorized liquefied petroleum gases with... | 12/12/1995 |
| 5391359 | Water dispersible thickeners comprising hydrophilic polymers coated with particulate fatty acids or the salts thereof The present invention provides a water dispersible particulate polymer composition having improved water dispersibility comprising a water soluble particulate polymer which has been contacted with a finely divided particulate dispersant comprised of at le... | 02/21/1995 |
| 5344674 | Composition and method for corrosion inhibition utilizing an epoxy resin, an amine curing agent, an alcohol and optionally a hydrocarbon diluent A composition is provided which, when applied to a metal surface, forms a corrosion-inhibiting film thereon. The composition comprises an epoxy resin, an effective amount of a curing agent for the epoxy resin, an alcohol, and a hydrocarbon diluent. The co... | 09/06/1994 |
| 5326854 | Flocculation process using lactam or vinyl sulfonate polymer A process capable of operation under hostile conditions for accelerating the sedimentation of suspended solids in an aqueous suspension using a flocculating agent comprising a water-soluble polymer composition produced from a monomer composition comprisin... | 07/05/1994 |
| 5318805 | Process for protecting and repairing plastic and plastic composite materials A process has been developed for treating plastic and plastic composite materials wherein a protective epoxy coating is placed on said material by contacting with a composition comprising an epoxy resin, an effective amount of curing agent for the epoxy r... | 06/07/1994 |
| 5294651 | Fluid loss additives for well cementing compositions An additive for reducing water loss from cement comprising a tetrapolymer, a base, an electrolyte, at least one surfactant, and water is disclosed. A process for producing cement slurries with improved water loss properties, as well as an improved method ... | 03/15/1994 |
| 5266616 | Polyolefin resin formulation using organic pigments This invention concerns a resin formulation for an organically pigment polyolefin resin suitable for tubing and pipe service. The resin formulation is comprised of ethylene polymers, a UV stabilizer, an antioxidant, and a tetrachloroisoindolinone pigment.... | 11/30/1993 |
| 5247061 | Synthesis of poly(dithio thiadiazole by oxidative polymerization This invention relates to the preparation of poly(dithio thiadiazole) by combining an oxidizing agent, a dithio thiadiazole, and an aprotic polar solvent thereby producing a polymer precipitant which may then be washed to remove residual contaminants.... | 09/21/1993 |
| 5239104 | Method to prepare alklyl xanthates of phenols Alkyl xanthates of phenols are prepared by a method comprising contacting an alkali metal salt of a phenol that is substantially free of water with carbon disulfide and an alkylating agent while employing a solvent in the reaction mixture.... | 08/24/1993 |
| 5232741 | Composition and method for corrosion inhibition utilizing an epoxy resin, an amine curing agent, an alcohol and optionally a hydrocarbon diluent A composition is provided which, when applied to a metal surface, forms a corrosion-inhibiting film thereon. The composition comprises an epoxy resin, an effective amount of a curing agent for the epoxy resin, an alcohol, and a hydrocarbon diluent. The co... | 08/03/1993 |
| 5213785 | Continuous antimony pentoxide production This invention concerns an improved means of oxidizing aqueous dispersions of antimony trioxide to colloidal hydrous antimony pentoxide in a continuous flow system. The oxidant is hydrogen peroxide and the continuous flow system nominally consists of a st... | 05/25/1993 |
| 5206439 | Preparation of high purity polysulfides Product from the reaction of mercaptan with sulfur in the presence of a basic catalyst is treated by contacting with an alcohol-based solution containing an oxidizing agent and an inorganic basic catalyst followed by the recovery of a purified polysulfide... | 04/27/1993 |
| 5202494 | Continuous process for the production of disulfides Process and apparatus for continuous production of disulfides by reacting at least one mercaptan and oxygen in the presence of a suitable catalyst selected from the group consisting of an alkaline earth metal oxide alone or in combination with an alkali m... | 04/13/1993 |
| 5186257 | Polymers useful in the recovery and processing of natural resources Water-soluble polymers comprising N-vinyl amide such as an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore. Polymers useful in the recovery of natural resources are prepared by polymerizing... | 02/16/1993 |
