Utilizing Electrostatic Charge, Field, Or Force (e.g., Pinning, Etc.) Patents (Class 264/465)
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Patent number: 8486318Abstract: Provided is a functional fiber and a fiber aggregate for realizing various functions, an adhesive for easily bonding electronic components, and a method for manufacturing the same. Particularly, a fiber extended in a length direction includes a carrier polymer and a plurality of functional particles, wherein the plurality of functional particles are embedded in the carrier polymer and physically fixed to the carrier polymer to be integrated.Type: GrantFiled: May 19, 2011Date of Patent: July 16, 2013Assignees: Optopac Co., Ltd., Korea Advanced Institute of Science and Technology, Micropack Co., Ltd.Inventors: Deok Hoon Kim, Kyung Wook Paik, Kyoung Lim Suk, Jae Ok Kim
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Publication number: 20130177623Abstract: Activated platelet-rich plasma (aPRP) is electrospun into fibrous matrices which are used to deliver components of aPRP to a site of action in a sustained manner. The electrospun matrices are used, for example, for tissue engineering applications and for the treatment of wounds.Type: ApplicationFiled: September 21, 2011Publication date: July 11, 2013Inventors: Gary L. Bowlin, Patricia S. Wolfe, Scott A. Sell
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Patent number: 8480945Abstract: An electrospinning manufacture for drug carriers is disclosed. The method comprises a preliminary step mixing a predetermined drug, an alginate, and a saline to obtain a mixture; an electric field establishing step providing a collection plate and an emitter filled with divalent cation agent and the mixture individually, wherein an electric field is applied to the collection plate and the emitter to form a voltage therebetween; and an electrospinning step sequentially dropping the mixture from the emitter into the divalent cation agent filled in the collection plate via the driving of the electric field, triggering a crosslinking-gelating reaction between the divalent cation and the alginate, wherein a plurality of gel particles is produced for a coating of the predetermined drug presenting a drug carrier performance.Type: GrantFiled: July 14, 2010Date of Patent: July 9, 2013Assignee: I-Shou UniversityInventors: Chih-Hui Yang, Keng-Shiang Huang, Yung-Sheng Lin
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Patent number: 8475692Abstract: Nanofibers are manufactured while preventing explosions from occurring due to solvent evaporation. An effusing unit (201) which effuses solution (300) into a space, a first charging unit (202) which electrically charges the solution (300) by applying an electric charge to the solution (300), a guiding unit (206) which forms an air channel for guiding the manufactured nanofibers (301), a gas flow generating unit (203) which generates, inside the guiding unit (206), gas flow for transporting the nanofibers, a diffusing unit (240) which diffusing the nanofibers (301) guided by the guiding unit (206), a collecting apparatus which electrically attracts and collects the nanofibers (301), and a drawing unit (102) which draws the gas flow together with the evaporated component evaporated from the solution (300) are included.Type: GrantFiled: March 23, 2009Date of Patent: July 2, 2013Assignee: Panasonic CorporationInventors: Hiroto Sumida, Takahiro Kurokawa, Kazunori Ishikawa, Yoshiaki Tominaga, Mikio Takezawa, Mitsuhiro Takahashi, Masahide Yokoyama
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Patent number: 8475704Abstract: Exemplary embodiments provide materials and methods for ink jet printhead nozzle plate and related printing apparatus, wherein the ink jet printhead nozzle plate can include a coaxially electrospun layer to provide a low adhesion oleophobic textile surface exhibiting a low sliding angle and a high contact angle with ultra-violet gel ink and/or solid ink.Type: GrantFiled: February 1, 2010Date of Patent: July 2, 2013Assignee: Xerox CorporationInventors: Hong Zhao, Kock-Yee Law, Varun Sambhy
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Publication number: 20130164629Abstract: A polyimide blend nanofiber and its use in battery separator are disclosed. The polyimide blend nanofiber is made of two kinds of polyimide precursors by high pressure electrostatic spinning and then high temperature imidization processing, wherein one of the polyimide precursor does not melt under high temperature ,and the other is meltable at a temperature of 300-400° C. The polyimide blend nanofiber of present invention has high temperature-resistance, high chemical stability, high porosity, good mechanical strength and good permeability, and can be applied as battery separator.Type: ApplicationFiled: September 30, 2010Publication date: June 27, 2013Applicant: JIANGXI ADVANCE NANOFIBER S&T CO., LTD.Inventors: Haoqing Hou, Chuyun Cheng, Shuiliang Chen, Xiaoping Zhou, Xiaoyi Lv, Ping He, Xiaoming Kuang, Jinsheng Ren
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Textile-Templated Electrospun Anisotropic Scaffolds for Tissue Engineering and Regenerative Medicine
Publication number: 20130131830Abstract: The present invention includes an anisotropic scaffold, which is prepared by electrospinning a solution of matrix material upon a textile template. The present invention further includes a method of preparing such scaffold. The anisotropic scaffold of the invention finds use in tissue engineering and regenerative medicine.Type: ApplicationFiled: May 23, 2011Publication date: May 23, 2013Applicant: Philadelphia UniversityInventors: Peter I. Lelkes, H. Gozde Senel, David Brookstein, Muthu Govindaraj -
Publication number: 20130112618Abstract: Filtration membrane comprising polymeric nanofibers and/or microfibers attaching dendrimer component presenting reactive sites selective for chemicals to be filtered, and related nanofibers and microfibers, composite materials, compositions, methods and system.Type: ApplicationFiled: August 8, 2012Publication date: May 9, 2013Inventors: Mamadou S. DIALLO, William A. GODDARD, III, Seong-Jik PARK, Manki CHO
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Publication number: 20130115457Abstract: Electrospun nanofibrils and methods of preparing the same are provided. The electrospun nanofibrils comprise at least one polypeptide. A polypeptide can be dissolved in a solution, and the solution can be electrospun into a nanofibril. The solution can be added to a syringe or syringe pump, and an electric field can be applied to electrospin the at least one polypeptide.Type: ApplicationFiled: June 21, 2011Publication date: May 9, 2013Applicants: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC., UNIVERSITY OF SOUTH FLORIDAInventors: Donald T. Haynie, Lei Zhai
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Publication number: 20130115456Abstract: This invention is directed to nanofibers doped with an alkali salt having improved tensile properties, and process of preparation thereof.Type: ApplicationFiled: July 12, 2011Publication date: May 9, 2013Inventors: Daniel H. Wagner, Erica Wiesel, Xiaomeng Sui
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Publication number: 20130108097Abstract: A membrane for covering an opening in a hearing aid is produced by a process of electrospinning fibers to form a non-woven structure. The electrospinning is adjusted in such a way that the various requirements of the membrane are fulfilled in the hearing aid, in particular with respect to water and dirt-repelling properties and acoustic permeability. The membrane is fixed by way of example in the form of a covering, in which the membrane is held by a holding frame, by a fixing device in front of the opening in the hearing aid. The membrane is adapted by way of example so as to be permeable to sound in order to use it for covering a noise admittance or exit opening of the hearing aid.Type: ApplicationFiled: October 29, 2012Publication date: May 2, 2013Applicant: SIEMENS MEDICAL INSTRUMENTS PTE. LTD.Inventor: SIEMENS MEDICAL INSTRUMENTS PTE. LTD.
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Patent number: 8431064Abstract: The invention relates to supports consisting of nanoscalar polymer fibers, polymer tubes or hollow fibers for the application and targeted and/or delayed release of ingredients, in particular, agricultural active ingredients. The invention also relates to a method and a device for the production of supports of this type in a charged or empty state. The method and device use electrospinning technology.Type: GrantFiled: August 8, 2011Date of Patent: April 30, 2013Assignees: Phillips-Universitat Marburg, Justus-Liebig Universitat GiessenInventors: Andreas Greiner, Hans E. Hummel, Joachim H. Wendorff, Mathias Becker, Roland Dersch
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Patent number: 8425810Abstract: A nanofiber production device produces nanofibers by stretching, in a space, a solution. The nanofiber production device includes: an effusing body which effuses the solution into the space by centrifugal force; a driving source which rotates the effusing body; a supplying electrode which is placed at a predetermined distance from the effusing body and supplies charge to the solution via the effusing body; a charging electrode to which a potential of reverse polarity to a polarity of the effusing body is applied, with the charging electrode being placed at a predetermined distance from the effusing body; and a charging power source which applies a predetermined voltage between the supplying electrode and the charging electrode.Type: GrantFiled: January 19, 2010Date of Patent: April 23, 2013Assignee: Panasonic CorporationInventors: Kazunori Ishikawa, Takahiro Kurokawa, Hiroto Sumida, Masahide Yokoyama
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Publication number: 20130093122Abstract: Described herein are synthesis schemes and methods for producing silicon based nanostructures and materials, including compositions and methods for synthesis of silicon-based nanowires and composites from three-component and four-component liquid silane/polymer inks. Materials and methods for producing silicon based micro and nanofibers that can be used in a variety of applications including material composites, electronic devices, sensors, photodetectors, batteries, ultracapacitors, and photosensitive substrates, and the like.Type: ApplicationFiled: October 5, 2012Publication date: April 18, 2013Applicant: NDSU RESEARCH FOUNDATIONInventor: NDSU RESEARCH FOUNDATION
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Publication number: 20130092622Abstract: A composite liquid filtration platform including a composite filtration medium featuring an electrospun polymeric nanofiber layer collected on a porous membrane. When in use, the porous membrane acts as a prefilter used upstream from the polymeric nanofiber layer to remove particles from a liquid stream flowing through the composite filtration structure. The nanofiber layer, positioned downstream from the porous membrane, is used as the retentive layer for critical filtration to provide biosafety assurance, and is responsible for capturing microorganisms like bacteria, mycoplasma or viruses. The composite liquid filtration platform provided herein exhibits permeability advantages over conventional porous membranes or nanofiber mats spun on coarse non-wovens.Type: ApplicationFiled: March 30, 2012Publication date: April 18, 2013Applicant: Millipore CorporationInventors: Onur Y. Kas, Mikhail Kozlov, Gabriel Tkacik, David Nhiem, Philip Goddard, Sherry Ashby Leon
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Publication number: 20130095307Abstract: A spacecraft or spacesuit that provides shielding to reduce exposure to ionizing radiation such as high energy electrons and protons. Further, methods are provided for reducing exposure through spacesuits and manufacturing spacecraft and spacesuit shields.Type: ApplicationFiled: October 17, 2011Publication date: April 18, 2013Applicant: CELLA ENERGY LIMITEDInventors: Stephen BENNINGTON, Arthur LOVELL, Tom HEADEN, David ROYSE, Atahl NATHANSON, Stephen VOLLER
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Patent number: 8414821Abstract: A method for electrostatic spinning of thermoplastic polymers for obtaining nano and microfibers, is introduced. The method if characterized by the following steps: solving the thermoplastic polymer in a corresponding solvent; adding a thermoplastic elastomer (TPE) to this solution, and introducing the solution into an electric field and spinning under the effect of the electric field to nano and microfibers.Type: GrantFiled: October 29, 2009Date of Patent: April 9, 2013Assignee: Mann + Hummel GmbHInventors: Nico Behrendt, Stefan Orendt
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Publication number: 20130084515Abstract: Disclosed is a polyimide porous web with good porosity, good dimensional stability, and uniform pore; a method for manufacturing the same; and an electrolyte membrane with improved ion conductivity and good dimensional stability owing to ion conductors uniformly impregnated in the porous web, the polyimide porous web having a porosity of 60% to 90%, wherein not less than 80% of entire pores of the porous web have a pore diameter which differs from an average pore diameter of the porous web by not more than 1.5 ?m.Type: ApplicationFiled: May 24, 2011Publication date: April 4, 2013Applicant: KOLON FASHION MATERIAL, INC.Inventors: Yun Kyung Kang, Heung Ryul Oh
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Publication number: 20130085212Abstract: The present invention relates to a procedure for the obtainment of a nanocomposite material through the technique of melt mixing comprising a polymeric matrix and a nanoreinforcement which has been previously dispersed in the same plastic or other matrix by means of electrospinning methods.Type: ApplicationFiled: November 2, 2012Publication date: April 4, 2013Applicant: CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS (CSIC)Inventor: Consejo Superior De Investigaciones Cientificas (CSIC)
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Publication number: 20130082424Abstract: Disclosed is an antibacterial nanofiber which comprises a polymer having an electron-withdrawing group and/or an electron-withdrawing atomic group and has an average fiber diameter of not less than 1 nm and less than 1000 nm, wherein the ratio of the binding energy of the minimum unit of the polymer at 25° C. to the binding energy of the electron-withdrawing group and/or the electron-withdrawing atomic group contained in the minimum unit of the polymer at 25° C. is 0.13 or greater. The nanofiber has an antibacterial activity by itself, and therefore can exhibit an antibacterial activity without the need of adding any antibacterial agent.Type: ApplicationFiled: November 26, 2012Publication date: April 4, 2013Applicant: NISSHINBO INDUSTRIES, INC.Inventor: NISSHINBO INDUSTRIES, INC.
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Publication number: 20130075326Abstract: Provided are a filter fabrication method and the filter formed thereby. In this method, a three-dimensional graphene polymer complex filter can be easily fabricated. By forming various patterns at a surface of a collector, patterns can be simply formed at a surface of a filter. This provides advantages at control of pressure difference which can be one of the very important factors necessary for designing and fabricating a filter. Since the filter includes graphene particles homogeneously combined to the polymer nanofiber, the filter can represent a superior antibiosis.Type: ApplicationFiled: September 13, 2012Publication date: March 28, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: Yong Ju YUN, Han Young Yu, Yark Yeon Kim, Won Ick Jang
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Publication number: 20130078527Abstract: Disclosed is a porous nanoweb including first and second nanofilaments, which facilitates to perform heat resistance simultaneously with a shutdown function for preventing a battery explosion caused by an abnormal heat generation, and to realize small thickness and easy control of porosity, wherein, if the porous nanoweb is used as a battery separator for a secondary battery, it allow the good battery efficiency and good safety owing to the low resistance, the porous nanoweb comprising the first nanofilament having a melting temperature not more than 200° C.; and the second nanofilament having a melting temperature not less than 210° C.Type: ApplicationFiled: June 21, 2011Publication date: March 28, 2013Applicant: KOLON INDUSTRIES, INC.Inventor: Moo-Seok Lee
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Patent number: 8403151Abstract: A nanofiber-containing membrane has a specific surface area of 0.1 to 1000 m2/g, porosity of 10 to 99.5% and a pore size of 0.01 to 10 ?m. This provides a nanofiber-containing membrane having properties of high specific surface area, high porosity, nanoscale pore size, high pore uniformity and so on. A process for producing a nanofiber-containing membrane comprising producing a membrane from a polymer solution by electrospinning technology under optimal operation conditions.Type: GrantFiled: March 31, 2010Date of Patent: March 26, 2013Assignee: Taiwan Textile Research InstituteInventors: Tai-Hong Cheng, Cheng-Chiang Huang
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Patent number: 8404174Abstract: A main object of the present invention is to provide a method for producing a carbon nanofiber supporting a metal fine particle in which the metal fine particles are supported in high dispersion and sintering of the metal fine particles is restrained. The present invention attains the object by providing a method for producing a carbon nanofiber supporting a metal fine particle comprising a step of: spinning a material composition which contains a nitrogen-containing polymer, including a nitrogen element and capable of forming a carbon nanofiber, and an organometallic compound by an electro spinning process, and the spinning is conducted under a condition which keeps the nitrogen element remained to the carbon nanofiber and allows the formation of the carbon nanofiber.Type: GrantFiled: November 18, 2008Date of Patent: March 26, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Haruyuki Nakanishi, Hidekazu Arikawa, Kazuya Uchisasai
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Publication number: 20130068692Abstract: Novel electrospun nanofibers and nanofibrous membranes, methods of manufacturing the same, and methods of using the same are provided. The nanofibers include a cactus mucilage, such as mucilage from Opuntia ficus-indica. An organic polymer can be added to the cactus mucilage before electrospinning The nanofibrous membranes can be used in water filtration.Type: ApplicationFiled: June 25, 2012Publication date: March 21, 2013Applicant: University of South FloridaInventors: Sylvia W. Thomas, Yanay Pais, Norma A. Alcantar
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Patent number: 8394393Abstract: A composite material containing polymeric nanofibers, themselves containing NO-donor molecules, imbibed with an elastomer matrix is permeable to both water and gas so that dissociation reactions in the presence of water releases NO gas in a sustained manner. The NO-donor nanofibers may be formed by synthesizing acceptable NO-donor molecules, blending such molecules in solution with PVP, PCL or PVAc, electrospinning the blend at relatively high voltage for form fiber mats, applying PDMS rubber to the fiber mat and crosslinking it. The resulting NO-releasing electrospun fiber composite may be used in medical devices such as catheters, stents, or vascular grafts, with the purpose of releasing nitric oxide within a controlled rate and for a sustained period of time, as well as other known medical applications for NO.Type: GrantFiled: April 6, 2011Date of Patent: March 12, 2013Assignee: Syracuse UniversityInventors: Patrick Mather, Ifeanyi Onyejewke, Kazuki Ishida
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Publication number: 20130053958Abstract: Prosthetic ligaments and tendons comprising ligament- or tendon-mimicking nanofibers and methods of making such nanofibers and prosthetic ligaments and tendons.Type: ApplicationFiled: March 27, 2012Publication date: February 28, 2013Inventor: Javier Macossay-Torres
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Patent number: 8383539Abstract: A carried material is carried only on a surface of nano-fibers. It includes a raw material liquid spray step that sprays raw material liquid, which is a raw material of nano-fibers, into a space, a raw material liquid electrically charging step, which applies an electric charge to the raw material liquid and makes the raw material liquid electrically charged, a nano-fiber manufacturing step that manufactures the nano-fibers by having the electrically charged and sprayed raw material liquid explode electrostatically, a carried material electrically charging step that electrically charges a carried material carried on the nano-fibers with a polarity opposite to a polarity of the electrically charged nano-fibers, and a mixing step that mixes the manufactured nano-fibers and the electrically charged carried material in a space.Type: GrantFiled: March 9, 2009Date of Patent: February 26, 2013Assignee: Panasonic CorporationInventors: Hiroto Sumida, Takahiro Kurokawa, Kazunori Ishikawa, Yoshiaki Tominaga, Mikio Takezawa, Mitsuhiro Takahashi, Takatoshi Mitsushima
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Publication number: 20130040140Abstract: Provided herein are gas and/or temperature assisted electrospinning apparatus, processes, components and polymer nanofibers.Type: ApplicationFiled: February 15, 2011Publication date: February 14, 2013Applicant: Cornell UniversityInventors: Yong L. Joo, Daehwan Cho, Eduard Zhmayev
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Patent number: 8366986Abstract: Electrostatic fine fiber generation equipment such as for forming nano-fibers from polymer solution is provided. The fine fiber generation equipment includes a strand that may take the form of a stainless steel beaded chain. The beaded chain can be an endless chain entrained upon two guide wheels and driven about an endless path perpendicularly relative to the collection media.Type: GrantFiled: May 24, 2011Date of Patent: February 5, 2013Assignee: CLARCOR Inc.Inventors: Thomas B. Green, Scotty L. King, Lei Li
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Patent number: 8361365Abstract: A process for electroblowing a multiple layered sheet using multiple spinning beams to produce different component webs wherein the sheet doesn't stick to the forming screen and has improved web stability.Type: GrantFiled: December 14, 2007Date of Patent: January 29, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Joseph Brian Hovanec, Michael John Moore, Sr.
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Publication number: 20130023648Abstract: A method of forming a cross-linked protein structures includes preparing a solution of protein dissolved in a benign solvent and forming an intermediate protein structure from the solution. The intermediate protein structure can be cross-linked by providing for a specific ratio of chemical cross-linking agents to form the cross-linked protein structure. The solution can be prepared by adding a cross-linker of N-hydroxysuccinimide (NHS) and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC) at a ratio of two-to-one of NHS to EDC to alcohol. PBS buffer (20X) can be added to the solution until the volume ratio of PBS buffer (20X) to alcohol is about one-to-one. About 16 percent by weight of protein can be dissolved in the solution. The solution can be electrospun to form an intermediate protein structure. After a period of time, the protein structure can be cross-linked to form the cross-linked protein structure.Type: ApplicationFiled: March 26, 2012Publication date: January 24, 2013Inventors: Gary Wnek, Linghui Meng
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Patent number: 8354052Abstract: A microconduit network structure and methods for making the same. One aspect of the invention relates to a microconduit network structure, including: a solid or semi-solid matrix having at least one interconnected web of filaments formed within the matrix; and wherein at least one interconnected web of filaments having diameters of about 10 nm to about 1 mm.Type: GrantFiled: January 26, 2010Date of Patent: January 15, 2013Assignee: The United States of America as Represented by the Secretary of the NavyInventors: Andrew J. Guenthner, David Michael Hess
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Publication number: 20130009098Abstract: A process of preparing a doped aluminum oxide, includes providing a solution comprising 8-hydroxyquinoline; an aluminum precursor; a dopant precursor, and a reaction solvent; isolating a precipitate from the solution; and calcining the precipitate to form the doped aluminum oxide. Compositions may be prepared which include tris(8-hydroxyquinolinato) aluminum and (8-hydroxyquinolinato)zM, wherein M is a metal ion and the value of z is equivalent to the oxidation state of the metal ion.Type: ApplicationFiled: April 15, 2011Publication date: January 10, 2013Applicant: Indian Institute of Technology KanpurInventor: S. Sundar Manoharan
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Patent number: 8337742Abstract: The invention relates to a novel method for electrospinning fibers wherein the fiber-spinning solution is infused with gas bubbles which travel through the electrospinning fluid, causing the bubbles to be coated with electrospinning solution. The coated bubbles, in turn, in response to an applied electrical force, generate jets of the electrospinning fluid that travel away from the bubble surface. The invention further relates to the fibers formed by this bubble-jet process and to products made therefrom.Type: GrantFiled: September 24, 2008Date of Patent: December 25, 2012Assignee: The University of AkronInventors: Jakapon Sunthornvarabhas, Darrell H. Reneker, George G. Chase
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Publication number: 20120318731Abstract: The invention relates to a membrane for the microfiltration or ultrafiltration of liquid fluids, in particular for the microfiltration or ultrafiltration of water or for the filtration of nanoparticles containing fluids. The membrane is characterized in that the membrane comprises, in particular electrospun, nanofibers, wherein the nanofibers are functionalized with proteins. Moreover, the invention relates to a method for producing a membrane for the microfiltration or ultrafiltration of liquid fluids, in particular for the microfiltration or ultrafiltration of water or for the filtration of nanoparticles containing fluids. Furthermore, the invention relates to a use of a microfiltration or ultrafiltration membrane.Type: ApplicationFiled: June 13, 2012Publication date: December 20, 2012Applicant: Helmholtz-Zentrum Geesthacht Zentrum fur Material- und Kustenforschung GmbHInventors: Mady Elbahri, Seyed Shahin Homaeigohar, Tianhe Dai, Ramzy Abdelaziz
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Patent number: 8333918Abstract: The present invention provides a method of making a nonwoven web, the method including the steps of providing plurality of fibers and subjecting the fibers to a pneumatic attenuation force which imparts a velocity to the fibers, reducing the velocity of the fibers in a diffusion chamber which is formed substantially between opposed diverging sidewalls, subjecting the fibers to an applied electrostatic charge, and thereafter collecting the fibers into a web on a moving forming surface. The invention also provides an apparatus for forming nonwoven webs, the apparatus comprising a source of fibers, a fiber attenuation chamber, a diffusion chamber formed substantially between opposed diverging sidewalls, the diffusion chamber located below the fiber attenuation chamber, and a forming surface for collecting the fibers as a nonwoven web.Type: GrantFiled: October 27, 2003Date of Patent: December 18, 2012Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Eric Edward Lennon, Thomas William Brock, Bryan David Haynes, Douglas Jay Hulslander
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Publication number: 20120315319Abstract: A guided bone regeneration material is disclosed. The guided bone regeneration material includes biodegradable fibers produced by an electro spinning method. The biodegradable fibers produced by the method include a silicon-releasing calcium carbonate and a biodegradable polymer. The silicon-releasing calcium carbonate is a composite of siloxane and calcium carbonate of vaterite phase. The biodegradable fibers may be coated with apatite. When the guided bone regeneration material is immersed in a neutral aqueous solution, silicon species ions are eluted from the calcium carbonate. The guided bone regeneration material excels in bone reconstruction ability.Type: ApplicationFiled: August 22, 2012Publication date: December 13, 2012Applicants: NATIONAL UNIVERSITY CORPORATION NAGOYA INSTITUTE OF TECHNOLOGY, YAMAHACHI DENTAL MFG., CO., YABASHI INDUSTRIES CO., LTD.Inventors: Toshihiro Kasuga, Yoshio Ota, Takashi Wakita
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Publication number: 20120315815Abstract: A method of synthesizing mechanically resilient titanium carbide (TiC) nano-fibrous felts comprising continuous nanofibers or nano-ribbons with TiC crystallites embedded in carbon matrix, comprising: (a) electrospinning a spin dope for making precursor nanofibers with diameters less than 0.5 ?m; (b) overlaying the nanofibers to produce a nano-fibrous mat (felt); and then (c) heating the nano-felts first at a low temperature, and then at a high temperature for making electrospun continuous nanofibers or nano-ribbons with TiC crystallites embedded in carbon matrix; and (d) chlorinating the above electrospun nano-felts at an elevated temperature to remove titanium for producing carbon-derived-carbon (CDC) nano-fibrous felt with high specific surface areas.Type: ApplicationFiled: May 29, 2012Publication date: December 13, 2012Applicant: South Dakota Board of RegentsInventors: Hao Fong, Lifeng Zhang, Yong Zhao, Zhengtao Zhu
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Publication number: 20120301514Abstract: The present invention relates to a bioactive composition obtained through the technique of electrospinning and composed of at least one polymer. Furthermore, the invention also discloses a process for the incorporation of such electrospun bioactive composition, as a coating over a plastic matrix to obtain composite materials for their use in both biodegradable and non-biodegradable biomedical implants and in tissue engineering.Type: ApplicationFiled: November 18, 2010Publication date: November 29, 2012Applicant: CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS (CSIC)Inventors: José M. Lagarón Cabello, Sergio Torres Giner, José V. Gimeno Alcañiz, María J. Ocio Zapata
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Publication number: 20120299223Abstract: Implants and methods for the delivery of a therapeutic agent to a target location within a patient's body are disclosed. The implants include a fiber comprising a polymeric material and having a diameter of up to about twenty microns, and a first therapeutic agent within the fiber. The therapeutic agent is substantially in particulate form. The implants are of a variety of configurations, such as individual fibers, yarns, ropes, tubes, and patches.Type: ApplicationFiled: August 10, 2012Publication date: November 29, 2012Inventors: Maria Palasis, Upma Sharma, Quynh Pham, John Marini
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Patent number: 8298471Abstract: The present invention relates to a process for producing polymer fibers, especially nano- and mesofibers, by electrospinning a colloidal dispersion of at least one essentially water-insoluble polymer in an aqueous medium, and to fibers obtainable by this process, to textile fabrics comprising the inventive fibers, and to the use of the inventive fibers and of the inventive textile fabrics.Type: GrantFiled: December 11, 2008Date of Patent: October 30, 2012Assignee: BASF SEInventors: Rajan Venkatesh, Evgueni Klimov
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Publication number: 20120270942Abstract: Disclosed herein is a device for the application of agricultural active agents, wherein the device is suitable to be brought to the site of action in a manner temporally and spatially separated from the production process, and comprises a dispenser and non-water-soluble nanofibers and/or mesofibers charged with agricultural active agents. The polymers from which the nanofibers and/or mesofibers are made are preferably biodegradable. The agricultural active agents are selected from fungicides, herbicides, batericides, plant growth regulators and plant nutrients. These are preferably pheromones, kairomones and signaling substances. Furthermore, a method for the production of this device is disclosed, wherein the nanofibers and/or mesofibers charged with active agents are produced via electrospinning. The device is suitable to be used to bring agricultural active agents to the site of action in a manner temporally and spatially separated from the production of this device.Type: ApplicationFiled: October 21, 2010Publication date: October 25, 2012Applicants: Justus-Liebig-Universitat Giessen, Baden-Wurttemberg Versuchs- und Forschungsanstalt fur Weinbau und Weinbehandlung, Philipps-Universitat MarburgInventors: Andreas Greiner, Joachim H. Wendorff, Seema Agarwall, Christoph Hellmann, Michael Breuer, Günter Leithold, Hans E. Hummel, Detlef Hein
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Publication number: 20120265300Abstract: Provided are materials comprising layers of anisotropically aligned fibers, the alignment of which fibers may be adjusted so as to give rise to circumferentially-aligned fibers that replicate the fiber alignment of native fibrous tissue, such as the meniscus or the annulus fibrosis. Also provided are laminates formed from the disclosed materials, as well as methods of fabricating the disclosed materials and laminates.Type: ApplicationFiled: March 16, 2012Publication date: October 18, 2012Applicant: THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIAInventors: Robert L. Mauck, Matthew B. Fisher, Brendon M. Baker, Amy M. Silverstein, Jason Alan Burdick
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Publication number: 20120264214Abstract: Sugar-acrylic monomers are synthesized to have a carbohydrate moiety linked to an acrylate group. The sugar-acrylic monomers may be polymerized to form polymers, adhesives, hydrogels, and the like. The sugar-acrylic monomers and polymers may be used in tissue engineering, adhesives and sealers, wound healing, and the like.Type: ApplicationFiled: October 27, 2010Publication date: October 18, 2012Applicant: EMPIRE TECHNOLOGY DEVELOPMENT LLCInventors: William B. Carlson, Gregory D. Phelan, Phillip A. Sullivan
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Publication number: 20120256355Abstract: The invention relates to a nanofiber web preparing apparatus and method via electro-blown spinning. The nanofiber web preparing method includes feeding a polymer solution, which is a polymer dissolved into a given solvent, toward a spinning nozzle, discharging the polymer solution via the spinning nozzle, which is charged with a high voltage, while injecting compressed air via the lower end of the spinning nozzle, and collecting fiber spun in the form of a web on a grounded suction collector under the spinning nozzle, in which both of thermoplastic and thermosetting resins are applicable, the solution does not need to be heated and electrical insulation is readily realized.Type: ApplicationFiled: May 14, 2012Publication date: October 11, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Yong Min Kim, Kyoung Ryoul Ahn, Young Bin Sung, Rai Sang Jang
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Publication number: 20120258160Abstract: Cellulose and sulfated cellulose fibrous meshes exhibiting robust structural and mechanical integrity in water were fabricated using a combination of electrospinning, thermal-mechanical annealing and chemical modifications. The sulfated fibrous mesh exhibited higher retention capacity for human recombinant bone morphogenetic protein-2 than the cellulose mesh, and the retained proteins remained biologically active for at least 7 days. The sulfated fibrous mesh also more readily supported the attachment and osteogenic differentiation of rat bone marrow stromal cells in the absence of osteogenic growth factors. These properties combined make the sulfated cellulose fibrous mesh a promising bone tissue engineering scaffold.Type: ApplicationFiled: April 3, 2012Publication date: October 11, 2012Inventors: Jie Song, Tera Marie Fillion Potts, Artem Kutikov
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Patent number: 8282873Abstract: Methods for controlled electrospinning of polymer fibers are described. The methods include spinning a polymer fiber from a fluid comprising a polymer in the presence of an electric field established between a plurality of collectors and a jet supply device controlling the dispersion characteristics of the fluid by applying a magnetic field created by at least one magnet located after the point of jet formation. Different voltages are applied to at least two collectors of the plurality of collectors. At least one magnet, located between the jet supply device and at least one collector, creates a magnetic field substantially transverse or substantially collinear to an electrospinning jet stream. The magnetic field changes direction of travel of the electrospinning jet stream.Type: GrantFiled: January 3, 2007Date of Patent: October 9, 2012Inventors: Victor Barinov, Kalle Levon
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Patent number: 8268224Abstract: The present invention provides a method for producing a polyethersulfone fiber, the method comprising the steps of discharging an electrically charged solution comprising a polyethersulfone and a solvent from a container; and drawing the charged solution by electrical attraction in an electrical field generated between the solution and an electrically charged collecting means having the opposite charge of the solution, while evaporating at least a portion of the solvent to form a polyethersulfone fiber. The fiber obtained in the present invention has a small average fiber diameter and can be made into a thin fiber cloth.Type: GrantFiled: May 14, 2008Date of Patent: September 18, 2012Assignee: Sumitomo Chemical Company, LimitedInventors: Yusaku Kohinata, Satoshi Okamoto
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Publication number: 20120231063Abstract: Provided is a dressing, comprising (a) a substrate layer and (b) an active layer, which is a nanofiber layer and comprises: (b1) at least one of gelatin and collagen; (b2) polyvinyl alcohol (PVA); and (b3) at least one of asiaticoside and a Centella asiatica extract. Also, a method for preparing the dressing is provided.Type: ApplicationFiled: June 16, 2011Publication date: September 13, 2012Applicant: CHINA MEDICAL UNIVERSITYInventors: Chun-Hsu YAO, Jen-Yu Yeh