Patents by Inventor Darsh T. Wasan
Darsh T. Wasan 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: 20120175120Abstract: Nanoparticles are added to a fluid containing a wetting agent and the fluid is pumped down a well to enhance wetting of solid surfaces in and around the well before pumping an acid solution down the well. After acid is pumped, a fluid containing nanoparticles and wetting agent is again pumped down the well, leading to improved flow capacity of the well.Type: ApplicationFiled: March 21, 2012Publication date: July 12, 2012Applicants: ILLINOIS INSTITUTE OF TECHNOLOGY, FTS INTERNATIONAL SERVICES, LLCInventors: David L. Holcomb, Darsh T. Wasan, Alex D. Nikolov
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Publication number: 20120168165Abstract: Nanoparticles are added to a fluid containing a wetting agent to enhance wetting of solid surfaces in and around the well and removing a water-block from the well. The wetting agent and nanoparticles combine to produce a wetting of the surfaces of the rock that allows recovery of the excess water near the well (water block).Type: ApplicationFiled: March 21, 2012Publication date: July 5, 2012Applicants: ILLINOIS INSTITUTE OF TECHNOLOGY, FTS INTERNATIONAL SERVICES, LLCInventors: David L. Holcomb, Darsh T. Wasan, Alex D. Nikolov
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Publication number: 20100234263Abstract: A cleaning composition comprising from about 0.001% to about 25% of nanoparticles comprising a water insoluble metal or semimetal compound having an effective diameter of less than about 65 nanometers, a grass stain removal index greater than 0 and a grease stain removal index greater than 0; and adjunct ingredients.Type: ApplicationFiled: March 21, 2007Publication date: September 16, 2010Applicants: THE PROCTER & GAMBLE COMPANY, ILLINOIS INSTITUTE OF TECHNOLOGYInventors: Darsh T. Wasan, Alex D. Nikolov, Michael Ray McDonald, Stacie Ellen Hecht
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Publication number: 20100096139Abstract: Methods are provided for improved intervention processes in a well. Nanoparticles are added to a fluid containing a wetting agent to enhance wetting of solid surfaces in and around the well, leading to improved flow capacity of the well.Type: ApplicationFiled: October 15, 2009Publication date: April 22, 2010Applicants: FRAC TECH SERVICES, LTD., ILLINOIS INSTITUTE OF TECHNOLOGYInventors: David L. Holcomb, Darsh T. Wasan, Alex D. Nikolov
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Publication number: 20090090387Abstract: Methods of removing cooked-, baked-, or burnt-on food soil from cookware and tableware comprising washing the cookware/tableware in an automatic dishwashing machine in the presence of a wash liquor comprising nanoparticles is disclosed herein.Type: ApplicationFiled: March 20, 2007Publication date: April 9, 2009Applicants: THE PROCTER & GAMBLE COMPANY, ILLINOIS INSTITUTE OF TECHNOLOGYInventors: Anju D. Massey Brooker, Nigel Patrick Somerville Roberts, David W. York, Yulong Ding, Darsh T. Wasan, Alex D. Nikolov
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Patent number: 5438041Abstract: A process is provided wherein hemoglobin, a fragile material, is formulated into high hemoglobin content water-in-oil-in-water multiple emulsion while maintaining high yields and high oxygen exchange activity. A multiple emulsion of aqueous oxygen carrying material in oil in outer aqueous phase is suitable for provision of oxygen for oxygen transfer processes. A hemoglobin multiple emulsion in physiologically compatible oil in an outer aqueous saline solution is provided in sufficiently small droplet size to provide oxygen flow through blood vessels to desired body tissues or organs thereby providing a blood substitute.Type: GrantFiled: March 3, 1993Date of Patent: August 1, 1995Assignees: Illinois Institute of Technology, Northfield Laboratories, Inc.Inventors: Shuming Zheng, Richard L. Beissinger, Darsh T. Wasan, Lakshman R. Sehgal, Arthur L. Rosen
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Patent number: 5217648Abstract: A process is provided wherein hemoglobin, a fragile material, is formulated into high hemoglobin content water-in-oil-in-water multiple emulsion while maintaining high yields and high oxygen exchange activity. A multiple emulsion of aqueous oxygen carrying material in oil in outer aqueous phase is suitable for provision of oxygen for oxygen transfer processes. A hemoglobin multiple emulsion in physiologically compatible oil in an outer aqueous saline solution is provided in sufficiently small droplet size to provide oxygen flow through blood vessels to desired body tissues or organs thereby providing a blood substitute.Type: GrantFiled: October 11, 1991Date of Patent: June 8, 1993Assignees: Illinois Institute of Technology, Northfield Laboratories, Inc.Inventors: Richard L. Beissinger, Darsh T. Wasan, Lakshman R. Sehgal, Arthur L. Rosen
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Patent number: 5061688Abstract: A multiple emulsion of aqueous oxygen carrying material in oil in outer aqueous phase is suitable for provision of oxygen for oxygen transfer processes. A hemoglobin multiple emulsion in physiologically compatible oil in an outer aqueous saline solution is provided in sufficiently small droplet size to provide oxygen flow through blood vessels to desired body tissues or organs thereby providing a blood substitute. A process is provided wherein hemoglobin, a fragile material, is formulated into high hemoglobin content water-in-oil-in-water multiple emulsions while maintaining high yields and high oxygen exchange activity.Type: GrantFiled: August 19, 1988Date of Patent: October 29, 1991Assignees: Illinois Institute of Technology, Northfield Laboratories, Inc.Inventors: Richard L. Beissinger, Darsh T. Wasan, Lahksman R. Sehgal, Arthur L. Rosen
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Patent number: 4248686Abstract: A filter for clarifying carbonaceous liquids containing finely divided solid particles of, for instance, unreacted coal, ash and other solids discharged from a coal liquefaction process is presented. The filter includes two passageways separated by a porous filter medium. In one preferred embodiment the filter medium is of tubular shape to form the first passageway and is enclosed within an outer housing to form the second passageway within the annulus. An electrode disposed in the first passageway, for instance along the tube axis, is connected to a source of high voltage for establishing an electric field between the electrode and the filter medium. Slurry feed flows through the first passageway tangentially to the surfaces of the filter medium and the electrode. Particles from the feed slurry are attracted to the electrode within the first passageway to prevent plugging of the porous filter medium while carbonaceous liquid filters into the second passageway for withdrawal.Type: GrantFiled: December 6, 1979Date of Patent: February 3, 1981Assignee: The United States of America as represented by the United States Department of EnergyInventors: Dimitri Gidaspow, Chang H. Lee, Darsh T. Wasan
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Patent number: 4224135Abstract: A filter for clarifying carbonaceous liquids containing finely divided solid particles of, for instance, unreacted coal, ash and other solids discharged from a coal liquefaction process is presented. The filter includes two passageways separated by a porous filter medium. In one preferred embodiment the filter medium is of tubular shape to form the first passageway and is enclosed within an outer housing to form the second passageway within the annulus. An electrode disposed in the first passageway, for instance along the tube axis, is connected to a source of high voltage for establishing an electric field between the electrode and the filter medium. Slurry feed flows through the first passageway tangentially to the surfaces of the filter medium and the electrode. Particles from the feed slurry are attracted to the electrode within the first passageway to prevent plugging of the porous filter medium while carbonaceous liquid filters into the second passageway for withdrawal.Type: GrantFiled: November 1, 1978Date of Patent: September 23, 1980Assignee: The United States of America as represented by the United States Department of EnergyInventors: Dimitri Gidaspow, Chang H. Lee, Darsh T. Wasan