Patents by Inventor Abbas Hassan
Abbas Hassan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20100147764Abstract: A method for removing contaminant from feedwater by forming a dispersion comprising bubbles of a treatment gas in a continuous phase comprising feedwater, wherein the bubbles have a mean diameter of less than about 5 ?m and wherein the treatment gas is selected from the group consisting of air, oxygen, and chlorine. A method for removing contaminants from a feedwater by subjecting a fluid mixture comprising feedwater and a treatment gas to a shear rate greater than 20,000 s?1 in a high shear device to produce a dispersion of treatment gas in a continuous phase of the feedwater. A system for treating feedwater to remove contaminants therefrom is also presented, the system comprising at least one high shear mixing device comprising at least one generator comprising a rotor and a stator separated by a shear gap; and a pump configured for delivering feedwater and treatment gas to the high shear mixing device.Type: ApplicationFiled: February 22, 2010Publication date: June 17, 2010Applicant: H R D CORPORATIONInventors: Abbas HASSAN, Ebrahim BAGHERZADEH, Rayford G. ANTHONY, Gregory BORSINGER, Aziz HASSAN
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Publication number: 20100125157Abstract: A method and system for producing dispersed waxes, including a high shear mechanical device. In one embodiment, the method comprises forming a dispersion of wax globules in a carrier liquid in a high shear device prior to implementation in a waxy product. In another instance the system for producing waxy products comprises a high shear device for dispersing wax in a carrier liquid.Type: ApplicationFiled: November 6, 2009Publication date: May 20, 2010Applicant: H R D CORPORATIONInventors: Abbas Hassan, Aziz Hassan
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Publication number: 20100111786Abstract: Use of a high shear mechanical device in a process for production of starch by hydration and disruption of corn kernel particles in the presence of sulfur dioxide or bisulfite ions makes possible a decrease in mass transfer limitations, thereby enhancing starch production. A system for production of starch is also provided in which a high shear mixing device is configured to receive an aqueous corn slurry from a pump that is disposed between the reactor and a gaseous sulfur dioxide inlet of the high shear mixing device. The high shear mixing device is also configured to generate a fine dispersion of sulfur dioxide bubbles and small corn particles in the slurry. A reactor is configured to receive the output from the high shear mixing device and to provide for starch production.Type: ApplicationFiled: July 31, 2009Publication date: May 6, 2010Applicant: H R D CORPORATIONInventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
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Publication number: 20100114061Abstract: Herein disclosed is a system for applying shear stress ex-situ to a fluid. In some embodiments, the system comprises a shear device; and at least one device configured for intravenous administration of the fluid to a patient, the devices defining a fluid passage configured to be sterilized and maintained sterile during use, the fluid comprising at least one therapeutic fluid, blood, or a combination thereof. The shear device of the system is in fluid communication with the at least one device configured for intravenous administration of the fluid to a patient. Herein also disclosed is a method of preparing a fluid for intravenous administration to a patient.Type: ApplicationFiled: October 1, 2009Publication date: May 6, 2010Applicant: H R D CORPORATIONInventors: Abbas HASSAN, Rayford G. ANTHONY, Gregory G. BORSINGER, Aziz HASSAN
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Publication number: 20100092354Abstract: Use of a high shear mechanical device incorporated into a process for the production of chloral as a reactor device is capable of decreasing mass transfer limitations, thereby enhancing the chloral production process. A system for the production of chloral from acetaldehyde and chlorine, the system comprising a reactor and an external high shear device the outlet of which is fluidly connected to the inlet of the reactor; the high shear device capable of providing a dispersion of chlorine gas bubbles within a liquid, the bubbles having an average bubble diameter of less than about 100 ?m.Type: ApplicationFiled: December 10, 2009Publication date: April 15, 2010Applicant: H R D CORPORATIONInventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
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Publication number: 20100092347Abstract: A method of use for a high shear device incorporated into a process or system for the production of acetaldehyde from ethylene as a reactor device is shown to be capable of decreasing mass transfer limitations, by forming a feed stream emulsion, and thereby enhancing the acetaldehyde production process in the system.Type: ApplicationFiled: December 10, 2009Publication date: April 15, 2010Applicant: HRD CORPORATIONInventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory G. Borsinger, Aziz Hassan
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Patent number: 7696391Abstract: A method for producing nitrobenzene is disclosed which comprises forming a dispersion comprising benzene-containing droplets or particles dispersed in a mixture of concentrated nitric acid and concentrated sulfuric acid, wherein said particles have a mean diameter less than one micron, and subjecting the dispersion to reaction conditions comprising a pressure in the range of about 203 kPa (2 atm) to about 6080 kPa (60 atm) and a temperature in the range of about 20° C. to about 230° C., whereby at least a portion of said benzene is nitrated to form nitrobenzene. A system for carrying out the method is also disclosed.Type: GrantFiled: June 13, 2008Date of Patent: April 13, 2010Assignee: H R D CorporationInventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
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Patent number: 7691953Abstract: A method is disclosed for producing polyvinyl chloride which includes mixing a vinyl chloride solution with an initiator solution in at least one high shear mixing device comprising at least one rotor/stator set producing a rotor tip speed of at least 5.1 m/sec (1000 ft/min), to form a polymerization mixture; and allowing the mixture to polymerize by free radical polymerization to form polyvinyl chloride. The polymerization mixture may be subjected to free radical polymerization conditions comprising a temperature in the range of about 20° C. to about 230° C. In some embodiments, the high shear mixing device produces a shear rate of at least 20,000 s?1. A system for carrying out the method is also disclosed.Type: GrantFiled: June 18, 2008Date of Patent: April 6, 2010Assignee: H R D CorporationInventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
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Publication number: 20100080736Abstract: Methods and systems for the production of ethyl acetate are described herein. The methods and systems incorporate the novel use of a high shear device to promote dispersion and mixing of a carbonyl co-reactant (e.g. acetic acid, acetaldehyde) with ethanol. The high shear device may allow for lower reaction temperatures and pressures and may also reduce reaction time with existing catalysts.Type: ApplicationFiled: December 2, 2009Publication date: April 1, 2010Applicant: H R D CORPORATIONInventors: Abbas HASSAN, Ebrahim BAGHERZADEH, Rayford G. ANTHONY, Gregory BORSINGER, Aziz HASSAN
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Patent number: 7659431Abstract: Methods and systems for preparing dialkyl ketones are described herein. The methods and systems incorporate the novel use of a high shear device to promote dispersion and solubility of carbon monoxide and hydrogen with the olefins (e.g. ethylene) in a liquid solvent. The high shear device may allow for lower reaction temperatures and pressures and may also reduce reaction time.Type: GrantFiled: June 19, 2008Date of Patent: February 9, 2010Assignee: H R D CorporationInventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
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Publication number: 20100018118Abstract: A method for removing hydrogen sulfide from a sour gas stream comprising hydrogen sulfide by oxidizing hydrogen sulfide in a converter by contacting the sour gas stream with an aqueous catalytic solution, thereby producing a desulfurized gas stream and a liquid stream comprising reduced catalyst and elemental sulfur, introducing an oxidant and the liquid stream comprising reduced catalyst and elemental sulfur into a high shear device and producing a dispersion wherein the mean bubble diameter of the oxidant gas in the dispersion is less than about 5 ?m, introducing the dispersion into a vessel from which a sulfur-containing slurry is removed and a regenerated catalyst stream is removed, wherein the sulfur slurry comprises elemental sulfur and aqueous liquid, and recycling at least a portion of the regenerated catalyst stream to the converter. A system of apparatus for carrying out the method is also provided.Type: ApplicationFiled: October 1, 2009Publication date: January 28, 2010Applicant: H R D CORPORATIONInventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
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Patent number: 7652174Abstract: Use of a high shear mechanical device incorporated into a process for the production of chloral as a reactor device is capable of decreasing mass transfer limitations, thereby enhancing the chloral production process. A system for the production of chloral from acetaldehyde and chlorine, the system comprising a reactor and an external high shear device the outlet of which is fluidly connected to the inlet of the reactor; the high shear device capable of providing a dispersion of chlorine gas bubbles within a liquid, the bubbles having an average bubble diameter of less than about 100 ?m.Type: GrantFiled: June 11, 2008Date of Patent: January 26, 2010Assignee: H R D CorporationInventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
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Patent number: 7652175Abstract: A method of use for a high shear device incorporated into a process or system for the production of acetaldehyde from ethylene as a reactor device is shown to be capable of decreasing mass transfer limitations, by forming a feed stream emulsion, and thereby enhancing the acetaldehyde production process in the system.Type: GrantFiled: June 10, 2008Date of Patent: January 26, 2010Assignee: H R D CorporationInventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
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Publication number: 20100015019Abstract: A method for producing aniline or toluenediamine is disclosed which comprises forming a dispersion comprising hydrogen gas bubbles dispersed in a liquid medium comprising either nitrobenzene or dinitrotoluene, wherein the hydrogen gas bubbles have a mean diameter less than 1 micron; and subjecting the dispersion to hydrogenation reaction promoting conditions comprising pressure less than about 600 kPa and temperature less than about 200° C., whereby at least a portion of the nitrobenzene or dinitrotoluene is hydrogenated to form aniline or toluenediamine, respectively. A system for carrying out the method is also disclosed.Type: ApplicationFiled: September 28, 2009Publication date: January 21, 2010Applicant: H R D CORPORATIONInventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
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Publication number: 20100015015Abstract: A method for producing nitrobenzene is disclosed which comprises forming a dispersion comprising benzene-containing droplets or particles dispersed in a mixture of concentrated nitric acid and concentrated sulfuric acid, wherein said particles have a mean diameter less than one micron, and subjecting the dispersion to reaction conditions comprising a pressure in the range of about 203 kPa (2 atm) to about 6080 kPa (60 atm) and a temperature in the range of about 20° C. to about 230° C., whereby at least a portion of said benzene is nitrated to form nitrobenzene. A system for carrying out the method is also disclosed.Type: ApplicationFiled: September 28, 2009Publication date: January 21, 2010Applicant: H R D CORPORATIONInventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
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Publication number: 20100004419Abstract: A reactor comprising at least one contact surface made from, coated with, or impregnated by a catalyst, wherein the contact surface comprises a sintered metal or a ceramic, and wherein the reactor is configured to subject a reactant stream to shear. A system for carrying out a heterogeneously catalyzed reaction, the system comprising a reactor as described above and a pump configured for delivering reactants to the at least one reactor. A method for carrying out a heterogeneously-catalyzed reaction by introducing reactants into a reactor comprising at least one contact surface made from, coated with, or impregnated by a catalyst under conditions which promote production of a desired product, wherein the contact surface comprises a sintered metal or a ceramic, and forming a dispersion of reactants within the reactor, wherein the dispersion comprises droplets or gas bubbles of reactant with an average diameter of less than about 5 ?m.Type: ApplicationFiled: June 2, 2009Publication date: January 7, 2010Applicant: H R D CORPORATIONInventors: Abbas HASSAN, Rayford G. ANTHONY, Gregory BORSINGER, Aziz HASSAN, Ebrahim Bagherzadeh
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Publication number: 20100000502Abstract: Use of a high shear mechanical device in a process to produce aerated fuels for efficient combustion in an engine. In instances, the method comprises forming an emulsion of a gas and liquid fuel in a high shear device prior to introduction to an engine. A vehicular system for producing aerated fuels comprising a high shear device.Type: ApplicationFiled: June 2, 2009Publication date: January 7, 2010Applicant: H R D CORPORATIONInventors: Abbas HASSAN, Rayford G. ANTHONY, Gregory BORSINGER, Aziz HASSAN, Ebrahim BAGHERZADEH
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Publication number: 20090321331Abstract: A system for treating feedwater to remove contaminants therefrom, the system comprising at least one high shear mixing device comprising at least one generator comprising a rotor and a stator separated by a shear gap, wherein the shear gap is the minimum distance between the rotor and the stator, and wherein the high shear mixing device is capable of producing a tip speed of the rotor of greater than 22.9 m/s (4,500 ft/min) and a pump configured for delivering feedwater and treatment gas selected from oxygen, air, and chlorine to the high shear mixing device.Type: ApplicationFiled: June 26, 2009Publication date: December 31, 2009Applicant: H R D CORPORATIONInventors: Abbas HASSAN, Ebrahim BAGHERZADEH, Rayford G. ANTHONY, Gregory BORSINGER, Aziz HASSAN
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Patent number: 7592493Abstract: Use of a high shear mechanical device incorporated into a process for the production of cyclohexanol is capable of decreasing mass transfer limitations, thereby enhancing the cyclohexanol production process. A system for the production of cyclohexanol from air oxidation of cyclohexane, the system comprising a high shear device, the outlet of the high shear device fluidly connected to the inlet of a reactor; the high shear device capable of providing a dispersion of air bubbles within a liquid comprising cyclohexane, the bubbles having an average bubble diameter of less than about 100 ?m.Type: GrantFiled: June 12, 2008Date of Patent: September 22, 2009Assignee: H R D CorporationInventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
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Publication number: 20090208382Abstract: A method is disclosed for producing polyvinyl chloride which includes mixing a vinyl chloride solution with an initiator solution in at least one high shear mixing device comprising at least one rotor/stator set producing a rotor tip speed of at least 5.1 m/sec (1000 ft/min), to form a polymerization mixture; and allowing the mixture to polymerize by free radical polymerization to form polyvinyl chloride. The polymerization mixture may be subjected to free radical polymerization conditions comprising a temperature in the range of about 20° C. to about 230° C. In some embodiments, the high shear mixing device produces a shear rate of at least 20,000 s?1. A system for carrying out the method is also disclosed.Type: ApplicationFiled: April 21, 2009Publication date: August 20, 2009Applicant: H R D CORPORATIONInventors: Abbas HASSAN, Ebrahim BAGHERZADEH, Rayford G. ANTHONY, Gregory BORSINGER, Aziz HASSAN