Patents by Inventor Cheryl Ford
Cheryl Ford 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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Patent number: 9617421Abstract: The present invention relates to the use of additives in processes to form polymeric fibers. These fibers can be formed into membranes with improved middle and/or higher molecular weight solute removal.Type: GrantFiled: February 3, 2012Date of Patent: April 11, 2017Assignee: Fresenius Medical Care Holdings, Inc.Inventors: Cheryl Ford, Jiunn Teo, Leslie Schmidt
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Patent number: 9353220Abstract: A process for making polyarylethers provides a reaction mixture that includes a dipolar aprotic solvent for polyarylether and polyarylether forming reactants, and reacts the polyarylether-forming reactants, with removing of water with nitrogen in the absence of azeotrope forming cosolvent and optionally replacing removed amounts with dipolar aprotic solvent. The process can further include directly wet spinning the reactor solution without recovery of the polymer from the dipolar aprotic solvent through a spinneret to form hollow fibers or flat sheets suitable for membranes.Type: GrantFiled: August 13, 2013Date of Patent: May 31, 2016Assignee: Fresenius Medical Care Holdings, Inc.Inventors: Selvaraj Savariar, Kevin Hudson, Geoffrey Andrew Russell, James Leslie White, Brett Allen Barton, Cheryl Ford, Jiunn Teo
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Patent number: 9078969Abstract: A dialysate regeneration system for removing contaminants from spent dialysate according to this invention includes a dialysate circulation flow path including a pump that pumps spent dialysate through the dialysate circulation flow path, a first cartridge adapted to remove contaminants from the spent dialysate, including a first cleaning solution inlet and a first cleaning solution outlet, a second cartridge adapted to remove urea from the spent dialysate, the second cartridge including semi-permeable hollow fibers adapted for transport of urea across the walls of the semi-permeable hollow fibers and adapted to retain at least calcium, magnesium, and sodium ions in the spent dialysate, and including a second cleaning solution inlet and a second cleaning solution outlet.Type: GrantFiled: September 1, 2010Date of Patent: July 14, 2015Assignee: Fresenius Medical Care Holdings, Inc.Inventors: Norma J. Ofsthun, Harold F. Sandford, Amanda K. Stennett, Jiunn Yeong Teo, Cheryl Ford, Benjamin J. Lipps, Michael James Beiriger
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Patent number: 8777892Abstract: A portable peritoneal dialysis system for a patient includes an inlet port for providing inflow to the patient's peritoneal cavity, an outlet port for providing outflow from the patient's peritoneal cavity, and a volume of dialysate for flow into and out of the patient's peritoneal cavity, thereby removing from the dialysate uremic waste metabolites that have diffused into the dialysate. The portable peritoneal dialysis system also includes a closed liquid flow loop, including a pump, for flowing the dialysate into and out of the patient's peritoneal cavity, and an organic- and phosphate-removing stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge containing material for removing organic compounds and phosphate from dialysate removed from the patient's peritoneal cavity.Type: GrantFiled: November 2, 2009Date of Patent: July 15, 2014Assignee: Fresenius Medical Care Holdings, Inc.Inventors: Harold F. Sandford, Norma J. Ofsthun, Amanda K. Stennett, Jiunn Yeong Teo, Cheryl Ford, Benjamin J. Lipps
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Publication number: 20130338297Abstract: The present invention relates to the use of additives in processes to form polymeric fibers. These fibers can be formed into membranes with improved middle and/or higher molecular weight solute removal.Type: ApplicationFiled: February 3, 2012Publication date: December 19, 2013Inventors: Cheryl Ford, Jiunn Teo, Leslie Schmidt
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Publication number: 20110060273Abstract: A dialysate regeneration system for removing contaminants from spent dialysate according to this invention includes a dialysate circulation flow path including a pump that pumps spent dialysate through the dialysate circulation flow path, a first cartridge adapted to remove contaminants from the spent dialysate, including a first cleaning solution inlet and a first cleaning solution outlet, a second cartridge adapted to remove urea from the spent dialysate, the second cartridge including semi-permeable hollow fibers adapted for transport of urea across the walls of the semi-permeable hollow fibers and adapted to retain at least calcium, magnesium, and sodium ions in the spent dialysate, and including a second cleaning solution inlet and a second cleaning solution outlet.Type: ApplicationFiled: September 1, 2010Publication date: March 10, 2011Applicant: Fresenius Medical Care Holdings, Inc.Inventors: Norma J. Ofsthun, Harold F. Sandford, Amanda K. Stennett, Jiunn Yeong Teo, Cheryl Ford, Benjamin J. Lipps
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Publication number: 20100114012Abstract: A portable peritoneal dialysis system for a patient includes an inlet port for providing inflow to the patient's peritoneal cavity, an outlet port for providing outflow from the patient's peritoneal cavity, and a volume of dialysate for flow into and out of the patient's peritoneal cavity, thereby removing from the dialysate uremic waste metabolites that have diffused into the dialysate. The portable peritoneal dialysis system also includes a closed liquid flow loop, including a pump, for flowing the dialysate into and out of the patient's peritoneal cavity, and an organic- and phosphate-removing stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge containing material for removing organic compounds and phosphate from dialysate removed from the patient's peritoneal cavity.Type: ApplicationFiled: November 2, 2009Publication date: May 6, 2010Inventors: Harold F. Sandford, Norma J. Ofsthun, Amanda K. Stennett, Jiunn Yeong Teo, Cheryl Ford, Benjamin J. Lipps
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Patent number: 5000989Abstract: A coating suspension including negatively charged fine particles, water, a negative charge precursor, a defoaming agent, a surface active agent, an insolubilizing agent, a plasticizer, and two water-soluble binders is provided. In a preferred embodiment the fine particles are fine particle-size silica. There is also provided a method for coating a substrate with fine particles having a negative electrical charge. The method includes forming a coating suspension including the fine particles, water, a negative charge precursor, a defoaming agent, a surface active agent, an insolubilizing agent, a plasticizer, and two water-soluble binders; applying the coating suspension to the surface of the substrate to form a coated substrate; and heating the coated substrate to cure the coating and remove the water from the suspension. The coating formed is insoluble in water and water based media.Type: GrantFiled: June 26, 1990Date of Patent: March 19, 1991Assignee: GTE Products CorporationInventor: Cheryl A. Ford
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Patent number: 4923425Abstract: A method for making a fluorescent lamp having a CRI approximately the same as the CRI of the lamp phosphor is disclosed. The method includes applying a coating comprising fine particle-size silica to the inner surface of the lamp envelope to form a coated envelope, the coating having a coating weight greater than 0.7 milligrams per square centimeter and less than the weight at which lumen output of the lamp is reduced due to absorption of visible wavelength light by the silica. A coating of phosphor selected to provide a predetermined CRI is applied over the silica layer; and the coated phosphor envelope is processed into a finished lamp. A fluorescent lamp having a CRI approximately equal to the CRI of the lamp phosphor is also disclosed. The lamp of the present invention includes a lamp envelope having an inner surface; a layer of fine particle-size silica disposed on the inner surface of the lamp envelope, the silica layer containing greater than about 0.7 mg/cm.sup.Type: GrantFiled: June 12, 1989Date of Patent: May 8, 1990Assignee: GTE Products CorporationInventor: Cheryl A. Ford
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Patent number: 4857798Abstract: A fluorescent lamp having a CRI approximately the same as the CRI of the lamp phosphor is disclosed. The method includes applying a coating comprising fine particle-size silica to the inner surface of the lamp envelope to form a coated envelope, the coating having a coating weight greater than 0.7 milligrams per square centimeter and less than the weight at which lumen output of the lamp is reduced due to absorption of visible wavelength light by the silica. A coating of phosphor selected to provide a predetermined CRI is applied over the silica layer; and the coated phosphor envelope is processed into a finished lamp. A fluorescent lamp having a CRI approximately equal to the CRI of the lamp phosphor is also disclosed. The lamp of the present invention includes a lamp envelope having an inner surface; a layer of fine particle-size silica disposed on the inner surface of the lamp envelope, the silica layer containing greater than about 0.7 mg/cm.sup.Type: GrantFiled: June 12, 1987Date of Patent: August 15, 1989Assignee: GTE Products CorporationInventor: Cheryl A. Ford
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Patent number: RE48703Abstract: The present invention relates to the use of additives in processes to form polymeric fibers. These fibers can be formed into membranes with improved middle and/or higher molecular weight solute removal.Type: GrantFiled: December 27, 2018Date of Patent: August 24, 2021Assignee: FRESENIUS MEDICAL CARE HOLDINGS, INC.Inventors: Cheryl Ford, Jiunn Teo, Leslie Schmidt