Patents by Inventor Margaret W. Frey
Margaret W. Frey 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: 9861096Abstract: Polymeric materials are provided that are produced from a blend of hydrophilic and hydrophobic biodegradable polymers. The polymeric materials can form fibers, nonwoven fabrics, films, coatings, etc. A compound can be incorporated in the polymeric materials. The delivery of the compound can be controlled by diffusion of the compound from the polymeric material and during biodegradation of the polymeric material. The release rate is controlled by varying the composition of the polymeric material to control diffusion rates of the compound and/or biodegradation rate of the polymeric material. This technology provides methods for delivering and controlling release rates of pesticides and related compounds in agricultural and non-agricultural settings. When adhered to plants or plant parts, the polymeric materials can provide protection from insect and disease pests. In pellet or capsule form, pesticides can be delivered into seed furrows along with crop seeds, providing similar protection.Type: GrantFiled: September 30, 2009Date of Patent: January 9, 2018Assignee: Cornell UniversityInventors: Margaret W. Frey, Chunhui Xiang, Michael P. Hoffmann, Alan G. Taylor, Jeffrey Gardner
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Publication number: 20140083859Abstract: A method is provided for producing, in a substrate, an enclosed channel or enclosed cavity comprising at least one functional nanofiber, the method comprising the steps of providing a first substrate and a second substrate; forming a channel or cavity on the first substrate or the second substrate; electrospinning at least one functional nanofiber on the first substrate; assembling the first and second substrates, wherein the first substrate is placed over the second substrate, or the second substrate is placed over the first substrate; and bonding the first substrate and the second substrate to form the substrate, thereby forming an enclosed channel or enclosed cavity comprising the at least one functional nanofiber in the substrate. An enclosed channel or cavity comprising at least one functional electrospun nanofiber is also provided. A microfluidic device is also provided comprising an enclosed channel or cavity comprising at least one functional electrospun nanofiber.Type: ApplicationFiled: March 23, 2012Publication date: March 27, 2014Applicant: Cornell UniversityInventors: Antje J. Baeumner, Margaret W. Frey, Daehwan Cho
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Patent number: 8257639Abstract: A process for making a stimuli responsive liquid crystal-polymer composite fiber comprising mixing a liquid crystal, a polymer, and a solvent; processing the mixture in the presence of an electric potential across a collection distance; phase separating a polymer and said liquid crystal; and encapsulating said liquid crystal within said polymer. The fiber generally comprises a liquid crystal core and a polymer shell wherein the liquid crystal is responsive to chemical changes, thermal and mechanical effects, as well as electrical and magnetic fields. A liquid crystal containing fiber can be utilized as optical fibers, in textiles, and in optoelectronic devices.Type: GrantFiled: September 22, 2009Date of Patent: September 4, 2012Assignee: Kent State UniversityInventors: Ebru A. Buyuktanir, Margaret W. Frey, John L. West
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Publication number: 20110275520Abstract: Polymeric materials are provided that are produced from a blend of hydrophilic and hydrophobic biodegradable polymers. The polymeric materials can form fibers, nonwoven fabrics, films, coatings, pellets, capsules, etc. A compound can be incorporated in the polymeric materials. The delivery of the compound can be controlled by diffusion of the compound from the polymeric material and during biodegradation of the polymeric material. The release rate is controlled by varying the composition of the polymeric material to control diffusion rates of the compound and/or biodegradation rate of the polymeric material. This technology provides methods for delivering and controlling release rates of pesticides and related compounds in agricultural and non-agricultural settings. When adhered to plants or plant parts, the polymeric materials can provide protection from insect and disease pests. In pellet or capsule form, pesticides can be delivered into seed furrows along with crop seeds, providing similar protection.Type: ApplicationFiled: September 30, 2009Publication date: November 10, 2011Inventors: Margaret W. Frey, Chunhui Xiang, Michael P. Hoffmann, Alan G. Taylor, Jeffrey Gardner
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Publication number: 20110263037Abstract: Fibers, fabrics and textiles in which core-shell silica nanoparticles are incorporated are provided. The fibers, fabrics and textiles can be polymeric materials or natural cellulose-based or protein-based materials in which core-shell silica nanoparticles are incorporated. A variety of polymeric and natural materials can be employed, such as cellulose acetate, nylon, rayon, modacrylic, olefin, acrylic, polyester, polylactic acid, polylactic-co-glycolic acid (PLGA), polyurethane, aramid, wool, cotton, ramie, milk protein, soy protein, bamboo, etc. The core-shell silica nanoparticles can incorporate sensing, magnetic, thermal, electrical, chemical or RFID properties that can be imparted to the materials and that allow the materials to sense one or more conditions of interest, making them ideal for in situ sensing, treatment, or security applications.Type: ApplicationFiled: May 12, 2009Publication date: October 27, 2011Inventors: Erik Herz, Erin Sue Hendrick, Margaret W. Frey, Ulrich Wiesner
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Publication number: 20110068493Abstract: A process for making a stimuli responsive liquid crystal-polymer composite fiber comprising mixing a liquid crystal, a polymer, and a solvent; processing the mixture in the presence of an electric potential across a collection distance; phase separating a polymer and said liquid crystal; and encapsulating said liquid crystal within said polymer. The fiber generally comprises a liquid crystal core and a polymer shell wherein the liquid crystal is responsive to chemical changes, thermal and mechanical effects, as well as electrical and magnetic fields. A liquid crystal containing fiber can be utilized as optical fibers, in textiles, and in optoelectronic devices.Type: ApplicationFiled: September 22, 2009Publication date: March 24, 2011Applicant: KENT STATE UNIVERSITYInventors: Ebru A. Buyuktanir, Margaret W. Frey, John L. West
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Patent number: 7618702Abstract: Composite of polyamide layer solvent bonded to cellulosic substrate is formed by solution electrospinning deposit of polyamide on cellulosic substrate with the solution subjected to electrospinning containing as solvent for polyamide one that swells cellulosic fibers on contact therewith and/or by depositing very long polyamide fibers of low average diameter.Type: GrantFiled: December 13, 2006Date of Patent: November 17, 2009Assignee: Cornell Research Foundation, Inc.Inventors: Margaret W. Frey, Lei Li, Thomas B. Green
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Patent number: 7485591Abstract: Electrospun nanofiber incorporating a binder (e.g., biotin) is used in the form of a nonwoven or composite with a substrate. The nonwoven and composite can be joined to biosensor, e.g., by binding the biotin to streptavidin and binding streptavidin to biotinylated detector, and because of the high surface area to volume of electrospun nanofiber provides increased sensitivity.Type: GrantFiled: May 4, 2006Date of Patent: February 3, 2009Assignee: Cornell Research Foundation, Inc.Inventors: Margaret W. Frey, Antje J. Baeumner, Dapeng Li, Prashant Kakad
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Publication number: 20070163217Abstract: Composite of polyamide layer solvent bonded to cellulosic substrate is formed by solution electrospinning deposit of polyamide on cellulosic substrate with the solution subjected to electrospinning containing as solvent for polyamide one that swells cellulosic fibers on contact therewith and/or by depositing very long polyamide fibers of low average diameter.Type: ApplicationFiled: December 13, 2006Publication date: July 19, 2007Applicants: Cornell Research Foundation, Inc., Clarcor, Inc.Inventors: Margaret W. Frey, Lei Li, Thomas B. Green