Al-Ghamdi
Abdullah Saeed Al-Ghamdi, Jeddah SA
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20100326538 | Water recirculation system - The water recirculation system provides for the controlled recirculation of water between an overhead water tank, which is mounted on the roof of a building, and an underground water tank. The overhead tank has a feed outlet, a recirculation outlet, and a recirculation inlet formed therein. A first conduit is provided, with a lower end thereof being positioned within the underground tank. A pump draws water from within the underground tank, which is delivered to a second conduit. An upper end thereof is in fluid communication with the overhead tank. A third conduit is further provided, having an upper end in communication with the overhead tank and a lower end in communication with the underground tank. A programmable valve selectively controls water flow out of the overhead tank, which is delivered, via the third conduit, to the underground tank by gravity. | 12-30-2010 |
20100326908 | Wastewater treatment system - The wastewater treatment system includes a tank having first and second partition walls dividing the tank into first, second and third chambers. An inlet port is formed through the first chamber and an outlet port is formed through the third chamber. A first port is formed through the first partition wall for controlling fluid flow from the first chamber to the second chamber, and a second port is formed through the second partition wall for controlling fluid flow from the second chamber to the third chamber. Oils and sludge are removed from the wastewater in the first chamber. Anaerobic bacteria within the second chamber then removes organic material from the water. The water is stored in the third chamber is irradiated by germicidal ultraviolet light before discharge from the third chamber. | 12-30-2010 |
20110315613 | Water conservation system - The water conservation system provides for the controlled circulation of heated water between an overhead water tank, which is mounted on the roof of a building, and an underground water tank for storing cooled water. The overhead tank has a feed outlet, a circulation outlet, and a circulation inlet formed therein. A first conduit is provided, with a lower end thereof being positioned within the underground tank. A pump draws water from within the underground tank, which is delivered to a second conduit. An upper end thereof is in fluid communication with the overhead tank. A third conduit is further provided, having an upper end in communication with the overhead tank and a lower end in communication with the underground tank. A programmable valve selectively controls water flow out of the overhead tank, which is delivered, via the third conduit, to the underground tank by gravity. | 12-29-2011 |
Ahmed Abdullah S. Al-Ghamdi, Jeddah SA
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20100321147 | Vanadium sesquioxide nanocomposite - The vanadium sesquioxide nanocomposite is useful for applications in thermistors, current switching devices, static charge dissipation devices, and electromagnetic shielding. Vanadium sesquioxide nanoparticles are produced using a sol-gel process that results in a V | 12-23-2010 |
20110021360 | Superconductive nanocomposite - The superconductive nanocomposite is a composition formed by nanoparticles of a high temperature superconductor blended with a polymer matrix containing natural rubber and polyethylene. The high temperature superconductor is preferably a bismuth-based superconductor (BSCCO) having a particle size of about 21 nm, but may be any other high temperature or Type II ceramic, metal oxide superconductor. The superconductor nanoparticles comprise about 15% of the weight of natural rubber in the composition. The polyethylene is preferably low density polyethylene and may comprise between 0% up to about 40% of the weight of natural rubber in the composition. The nanocomposite may be prepared by blending the components and roll milling the rubber. Depending upon the percentage of polyethylene present in the matrix, the nanocomposite has useful applications as a double thermistor (both positive and negative coefficients of electrical resistivity), for antistatic charge dissipation, and for electromagnetic shielding in the microwave region. | 01-27-2011 |
Attieh Al-Ghamdi, Riyadh SA
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20100234486 | Synthesis of solid state dye laser by y-irradiation polymerization method - A Solid state dye laser (SSDL) mixture of rhodamine B (RB) dissolved in ethylene glycol (EG) and added in a 2-hydroxyethyl-methacrylate (HEMA) methyl-methacrylate (MMA) copolymerized by gamma irradiation method (GIM). | 09-16-2010 |
Ghurmallah Al-Ghamdi, Riyadh SA
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20140213674 | WATER EXPANDABLE POLYMER BEADS - The present invention relates to a process for the emulsifier-free preparation of water expandable polymer beads. The process comprises the steps of: a) providing an emulsifier-free monomer composition comprising styrene and a polar comonomer comprising a carbon-to-carbon double bond, b) prepolymerizing the monomer composition to obtain a prepolymer composition comprising styrene, the polar comonomer and their copolymer, c) adding an aqueous dispersion of nanoclay to the prepolymer composition to obtain an inverse emulsion, d) suspending the inverse emulsion obtained by step c) in an aqueous medium to yield an aqueous suspension of suspended droplets and e) polymerizing the monomers in the droplets of the suspension obtained by step d). | 07-31-2014 |
20140221511 | WATER EXPANDABLE POLYMER BEADS - The present invention relates to a process for the emulsifier-free preparation of water expandable polymer beads, which process comprises the steps of: a) providing an emulsifier-free starting composition comprising styrene and a polyphenylene ether resin, b) prepolymerizing the starting composition to obtain a prepolymer composition, c) adding an aqueous dispersion of a modifier-free nanoclay to the prepolymer composition to obtain an inverse emulsion, d) suspending the inverse emulsion obtained by step c) in an aqueous medium to yield an aqueous suspension of suspended droplets and e) polymerizing the monomers in the droplets of the suspension obtained by step d) to obtain the water expandable polymer beads. | 08-07-2014 |
Mohammed Abdullah Al-Ghamdi, Dhahran SA
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20110220546 | HIGH QUALITY MIDDLE DISTILLATE PRODUCTION PROCESS - A hydrocarbon feedstock is hydrocracked in a hydrocracking zone and the effluent is fractioned to recover a light fraction, a middle fraction containing aromatic compounds and a heavy fraction. The heavy fraction is recycled to the hydrocracking zone for further hydrocracking. The middle fraction is introduced to an aromatic separation zone. A product stream is recovered from the aromatic separation zone comprising a middle fraction having a reduced content of aromatic compounds as compared to the middle fraction recovered from the fractionator. Aromatics from the aromatic separation zone are recycled to the hydrocracking zone for further hydrogenation and cracking. | 09-15-2011 |
20150106027 | CHARACTERIZATION OF CRUDE OIL BY NMR SPECTROSCOPY - A system and a method for applying | 04-16-2015 |
Muased Salem Musaed Al-Ghrami Al-Ghamdi, Dhahran SA
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20130098314 | EMISSION REDUCTION FROM MOBILE SOURCES BY ON-BOARD CARBON DIOXIDE CONVERSION TO FUEL - An apparatus and process for reducing vehicle emissions by converting exhaust gases to hydrocarbon fuel. The apparatus and process supplement conventional emission control techniques to further reduce vehicle emissions of harmful substances. The apparatus includes a heat exchanger to extract thermal energy from exhaust gases of a combustion engine that powers propulsion of a vehicle, a membrane separator to separate water and carbon dioxide from the exhaust gases, and a catalytic reactor comprising a nano catalyst. The catalytic reactor receives the water and the carbon dioxide from the membrane separator, contains a reaction of the water and the carbon dioxide that produces hydrocarbon fuel and is facilitated by the nano catalyst, and uses the thermal energy from the heat exchanger to stimulate the reaction. The catalytic reactor is contained within a body of the heat exchanger to facilitate the transfer of thermal energy. | 04-25-2013 |
Musaed Salem Musaed Al-Ghrami Al-Ghamdi, Dhahran SA
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20130210613 | CATALYST ADDITIVE FOR REDUCTION OF SULFUR IN CATALYTICALLY CRACKED GASOLINE - The present invention concerns a novel additive composition for reducing sulfur content of a catalytically cracked gasoline fraction. This additive composition comprises a support consisting of porous clay into which a first metal from group IVB is incorporated and a second metal from group IIB is impregnated. Preferably, the first incorporated metal is zirconium and the second impregnated metal is zinc. The sulfur reduction additive is used in the form of a separate particle in combination with a conventional cracking catalyst in a fluidized catalytic cracking process to convert hydrocarbon feed stocks into gasoline having comparatively lower sulfur content and other liquid products. | 08-15-2013 |
Ramzi S. Al-Ghamdi, Dammam SA
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20150286971 | BIT PERFORMANCE ANALYSIS - The performance of drill bits proposed for use in drilling wells is analyzed for comparison and evaluation based on field experience, projected drilling and formation conditions, and performance criteria. Drill bits of different types and from different possible sources are analyzed with a common processing methodology to provide cost per foot data based on several possible drilling criteria contemplated for a well. The present invention also incorporates historical data from other wells and from similar formations to those of the planned well, as well as performance in similar conditions of the types of drill bits contemplated, and projected drilling strategies and trajectories. | 10-08-2015 |
Sameer A. Al-Ghamdi, Dhahran SA
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20090145807 | PROCESS TO PRODUCE LOW SULFUR CATALYTICALLY CRACKED GASOLINE WITHOUT SATURATION OF OLEFINIC COMPOUNDS - The invention relates to a process for the desulfurization of a gasoline fraction with high recovery of olefins and reduced loss of Research Octane Number (RON). A petroleum fraction is contacted with hydrogen and a commercially available hydrodesulfurization catalyst under mild conditions with to remove a first portion of the sulfur present, and is then contacted with an adsorbent for the removal of additional sulfur. | 06-11-2009 |
20120138510 | PROCESS TO PRODUCE LOW SULFUR CATALYTICALLY CRACKED GASOLINE WITHOUT SATURATION OF OLEFINIC COMPOUNDS - The invention relates to a process for the desulfurization of a gasoline fraction with high recovery of olefins and reduced loss of Research Octane Number (RON). A petroleum fraction is contacted with hydrogen and a commercially available hydrodesulfurization catalyst under mild conditions with to remove a first portion of the sulfur present, and is then contacted with an adsorbent for the removal of additional sulfur. | 06-07-2012 |
Sameer Ali Al-Ghamdi, Dhahran SA
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20090230026 | Catalyst To Attain Low Sulfur Gasoline - This invention relates to a hydrodesulfurization catalyst, a method for preparing the catalyst, and a method for the preparation of low sulfur gasoline fuel with minimal loss of RON. The catalyst particles include a group VIB metal and a support material having relatively high surface area, and optionally includes one or more group VIIIB metal. The method for preparing the catalyst allows for greater loading of the active metal species on the surface of the support material under aqueous reaction conditions. | 09-17-2009 |