Patents Represented by Attorney, Agent or Law Firm Andrew L. Filler
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Patent number: 8343575Abstract: The present invention provides methods for hermetically sealing luminescent nanocrystals, as well as compositions and containers comprising hermetically sealed luminescent nanocrystals. By hermetically sealing the luminescent nanocrystals, enhanced lifetime and luminescence can be achieved.Type: GrantFiled: December 30, 2008Date of Patent: January 1, 2013Assignee: Nanosys, Inc.Inventor: Robert S. Dubrow
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Patent number: 8319002Abstract: Methods, systems, and apparatuses for nanomaterial-enhanced platelet binding and hemostatic medical devices are provided. Hemostatic materials and structures are provided that induce platelet binding, including platelet binding and the coagulation of blood at a wound/opening caused by trauma, a surgical procedure, ulceration, or other cause. Example embodiments include platelet binding devices, hemostatic bandages, hemostatic plugs, and hemostatic formulations. The hemostatic materials and structures may incorporate nanostructures and/or further hemostatic elements such as polymers, silicon nanofibers, silicon dioxide nanofibers, and/or glass beads into a highly absorbent, gelling scaffold. The hemostatic materials and structures may be resorbable.Type: GrantFiled: March 9, 2010Date of Patent: November 27, 2012Assignee: Nanosys, Inc.Inventors: R. Hugh Daniels, Esther Li, Erica J. Rogers
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Patent number: 8304595Abstract: Methods, systems, and apparatuses for nanomaterial-enhanced hemostatic medical devices are provided. Hemostatic materials and structures are provided that induce coagulation of blood at a wound/opening caused by trauma, a surgical procedure, ulceration, or other cause. The hemostatic materials and structures may incorporate nanostructures and/or further hemostatic elements such as polymers and/or glass beads. The hemostatic materials and structures may be resorbable. Example embodiments include hemostatic bandages, hemostatic plugs, and hemostatic formulations.Type: GrantFiled: December 5, 2008Date of Patent: November 6, 2012Assignee: Nanosys, Inc.Inventors: R. Hugh Daniels, Robert S. Dubrow, Robert Enzerink, Esther Li, Vijendra Sahi, Jay L. Goldman, J. Wallace Parce
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Patent number: 8293624Abstract: A method and apparatus for an electronic substrate having a plurality of semiconductor devices is described. A thin film of nanowires is formed on a substrate. The thin film of nanowires is formed to have a sufficient density of nanowires to achieve an operational current level. A plurality of semiconductor regions are defined in the thin film of nanowires. Contacts are formed at the semiconductor device regions to thereby provide electrical connectivity to the plurality of semiconductor devices. Furthermore, various materials for fabricating nanowires, thin films including p-doped nanowires and n-doped nanowires, nanowire heterostructures, light emitting nanowire heterostructures, flow masks for positioning nanowires on substrates, nanowire spraying techniques for depositing nanowires, techniques for reducing or eliminating phonon scattering of electrons in nanowires, and techniques for reducing surface states in nanowires are described.Type: GrantFiled: August 25, 2011Date of Patent: October 23, 2012Assignee: Nanosys, Inc.Inventors: Linda T. Romano, Jian Chen
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Patent number: 8283412Abstract: Matrixes doped with semiconductor nanocrystals are provided. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes are optionally formed from the ligands. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. Processes for producing matrixes comprising semiconductor nanocrystals are also provided.Type: GrantFiled: April 29, 2010Date of Patent: October 9, 2012Assignee: Nanosys, Inc.Inventors: Mingjun Liu, Robert Dubrow, William P. Freeman, Adrienne Kucma, J. Wallace Parce
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Patent number: 8278011Abstract: The present invention relates to SiC nanostructures, including SiC nanopowder, SiC nanowires, and composites of SiC nanopowder and nanowires, which can be used as catalyst supports in membrane electrode assemblies and in fuel cells. The present invention also relates to composite catalyst supports comprising nanopowder and one or more inorganic nanowires for a membrane electrode assembly.Type: GrantFiled: February 23, 2009Date of Patent: October 2, 2012Assignee: Nanosys, Inc.Inventors: Yimin Zhu, Jay L. Goldman, Baixin Qian, Ionel C. Stefan
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Patent number: 8143703Abstract: Methods for forming or patterning nanostructure arrays are provided. The methods involve formation of arrays on coatings comprising nanostructure association groups, patterning using resist, and/or use of devices that facilitate array formation. Related devices for forming nanostructure arrays are also provided, as are devices including nanostructure arrays (e.g., memory devices).Type: GrantFiled: November 5, 2008Date of Patent: March 27, 2012Assignee: Nanosys, Inc.Inventors: David L. Heald, Karen Chu Cruden, Xiangfeng Duan, Chao Liu, J. Wallace Parce
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Patent number: 8088483Abstract: Methods for producing Group 10 metal nanostructures are provided. The methods involve novel precursors, novel surfactants, or novel precursor-surfactant combinations. Compositions related to the methods are also featured.Type: GrantFiled: December 15, 2005Date of Patent: January 3, 2012Assignee: Nanosys, Inc.Inventors: Jeffery A. Whiteford, Mihai A. Buretea, William P. Freeman, J. Wallace Parce, Baixin Qian, Erik C. Scher
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Patent number: 8062967Abstract: Methods for producing nanostructures, particularly Group III-V semiconductor nanostructures, are provided. The methods include use of novel Group III and/or Group V precursors, novel surfactants, oxide acceptors, high temperature, and/or stable co-products. Related compositions are also described. Methods and compositions for producing Group III inorganic compounds that can be used as precursors for nanostructure synthesis are provided. Methods for increasing the yield of nanostructures from a synthesis reaction by removal of a vaporous by-product are also described.Type: GrantFiled: June 1, 2009Date of Patent: November 22, 2011Assignee: Nanosys, Inc.Inventors: Erik C. Scher, Mihai A. Buretea, William P. Freeman, Joel Gamoras, Baixin Qian, Jeffery A. Whiteford
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Patent number: 8041171Abstract: This invention provides composite materials comprising nanostructures (e.g., nanowires, branched nanowires, nanotetrapods, nanocrystals, and nanoparticles). Methods and compositions for making such nanocomposites are also provided, as are articles comprising such composites. Waveguides and light concentrators comprising nanostructures (not necessarily as part of a nanocomposite) are additional features of the invention.Type: GrantFiled: September 4, 2009Date of Patent: October 18, 2011Assignee: Nanosys, Inc.Inventors: Mihai A. Buretea, Stephen A. Empedocles, Chunming Niu, Erik C. Scher
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Patent number: 8030186Abstract: A method and apparatus for an electronic substrate having a plurality of semiconductor devices is described. A thin film of nanowires is formed on a substrate. The thin film of nanowires is formed to have a sufficient density of nanowires to achieve an operational current level. A plurality of semiconductor regions are defined in the thin film of nanowires. Contacts are formed at the semiconductor device regions to thereby provide electrical connectivity to the plurality of semiconductor devices. Furthermore, various materials for fabricating nanowires, thin films including p-doped nanowires and n-doped nanowires, nanowire heterostructures, light emitting nanowire heterostructures, flow masks for positioning nanowires on substrates, nanowire spraying techniques for depositing nanowires, techniques for reducing or eliminating phonon scattering of electrons in nanowires, and techniques for reducing surface states in nanowires are described.Type: GrantFiled: November 5, 2010Date of Patent: October 4, 2011Assignee: Nanosys, Inc.Inventors: Linda T. Romano, Jian Chen
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Patent number: 7985475Abstract: This invention provides novel super-liquidphobic nanofibers and structures comprising such nanofibers, as well as methods and uses for such nanofibers.Type: GrantFiled: April 27, 2004Date of Patent: July 26, 2011Assignee: Nanosys, Inc.Inventor: Robert Dubrow
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Patent number: 7985454Abstract: The present invention is directed to compositions of matter, systems, and methods to manufacture nanowires. In an embodiment, a method to produce a catalytic-coated nanowire growth substrate for nanowire growth is disclosed which comprises: (a) depositing a buffer layer on a substrate; (b) treating the buffer layer with boiled water or steam to enhance interactions between the buffer layer and catalyst particles; and (c) depositing catalytic particles on a surface of the buffer layer. Methods to develop and use this catalytic-coated nanowire growth substrate are disclosed.Type: GrantFiled: September 23, 2008Date of Patent: July 26, 2011Assignee: Nanosys, Inc.Inventors: Chunming Niu, Jay L. Goldman, Xiangfeng Duan, Vijendra Sahi
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Patent number: 7977013Abstract: The present invention discloses nanowires for use in a fuel cell comprising a metal catalyst deposited on a surface of the nanowires. A membrane electrode assembly for a fuel cell is disclosed which generally comprises a proton exchange membrane, an anode electrode, and a cathode electrode, wherein at least one or more of the anode electrode and cathode electrode comprise an interconnected network of the catalyst supported nanowires. Methods are also disclosed for preparing a membrane electrode assembly and fuel cell based upon an interconnected network of nanowires.Type: GrantFiled: December 20, 2006Date of Patent: July 12, 2011Assignee: Nanosys, Inc.Inventors: Chunming Niu, Calvin Y. H. Chow, Stephen A. Empedocles, J. Wallace Parce
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Patent number: 7977007Abstract: The present invention discloses nanowires for use in a fuel cell comprising a metal catalyst deposited on a surface of the nanowires. A membrane electrode assembly for a fuel cell is disclosed which generally comprises a proton exchange membrane, an anode electrode, and a cathode electrode, wherein at least one or more of the anode electrode and cathode electrode comprise an interconnected network of the catalyst supported nanowires. Methods are also disclosed for preparing a membrane electrode assembly and fuel cell based upon an interconnected network of nanowires.Type: GrantFiled: September 19, 2008Date of Patent: July 12, 2011Assignee: Nanosys, Inc.Inventors: Chunming Niu, Calvin Y. H. Chow, Stephen A. Empedocles, J. Wallace Parce
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Patent number: 7932511Abstract: A method and apparatus for an electronic substrate having a plurality of semiconductor devices is described. A thin film of nanowires is formed on a substrate. The thin film of nanowires is formed to have a sufficient density of nanowires to achieve an operational current level. A plurality of semiconductor regions are defined in the thin film of nanowires. Contacts are formed at the semiconductor device regions to thereby provide electrical connectivity to the plurality of semiconductor devices. Furthermore, various materials for fabricating nanowires, thin films including p-doped nanowires and n-doped nanowires, nanowire heterostructures, light emitting nanowire heterostructures, flow masks for positioning nanowires on substrates, nanowire spraying techniques for depositing nanowires, techniques for reducing or eliminating phonon scattering of electrons in nanowires, and techniques for reducing surface states in nanowires are described.Type: GrantFiled: March 1, 2007Date of Patent: April 26, 2011Assignee: Nanosys, Inc.Inventors: Xiangfeng Duan, Chunming Niu, Stephen Empedocles, Linda T. Romano, Jian Chen, Vijendra Sahi, Lawrence Bock, David Stumbo, J. Wallace Parce, Jay L. Goldman
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Patent number: 7888292Abstract: Methods of detecting a component of interest, a change in charge, a pH, a cellular response using nanosensors are provided. Nanosensors, including nanowires and nanowire arrays comprising functionalized and/or non-functionalized nanowires are provided. Nanosensors are used for detection in cellular fragmentation, multiple concentration analysis, glucose detection, and intracellular analysis.Type: GrantFiled: October 18, 2007Date of Patent: February 15, 2011Assignee: Nanosys, Inc.Inventors: Larry Bock, R. Hugh Daniels, Stephen Empedocles, John C. Owicki
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Patent number: 7871870Abstract: Methods, systems, and apparatuses for electronic devices having improved gate structures are described. An electronic device includes at least one nanowire. A gate contact is positioned along at least a portion of a length of the at least one nanowire. A dielectric material layer is between the gate contact and the at least one nanowire. A source contact and a drain contact are in contact with the at least one nanowire. At least a portion of the source contact and/or the drain contact overlaps with the gate contact along the nanowire the length. In another aspect, an electronic device includes a nanowire having a semiconductor core surrounded by an insulating shell layer. A ring shaped first gate region surrounds the nanowire along a portion of the length of the nanowire. A second gate region is positioned along the length of the nanowire between the nanowire and the substrate.Type: GrantFiled: February 9, 2010Date of Patent: January 18, 2011Assignee: Nanosys, Inc.Inventors: Shahriar Mostarshed, Jian Chen, Francisco A. Leon, Yaoling Pan, Linda T. Romano
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Patent number: 7851841Abstract: A method and apparatus for an electronic substrate having a plurality of semiconductor devices is described. A thin film of nanowires is formed on a substrate. The thin film of nanowires is formed to have a sufficient density of nanowires to achieve an operational current level. A plurality of semiconductor regions are defined in the thin film of nanowires. Contacts are formed at the semiconductor device regions to thereby provide electrical connectivity to the plurality of semiconductor devices. Furthermore, various materials for fabricating nanowires, thin films including p-doped nanowires and n-doped nanowires, nanowire heterostructures, light emitting nanowire heterostructures, flow masks for positioning nanowires on substrates, nanowire spraying techniques for depositing nanowires, techniques for reducing or eliminating phonon scattering of electrons in nanowires, and techniques for reducing surface states in nanowires are described.Type: GrantFiled: June 8, 2007Date of Patent: December 14, 2010Assignee: Nanosys, Inc.Inventors: Xiangfeng Duan, Chunming Niu, Stephen A. Empedocles, Linda T. Romano, Jian Chen, Vijendra Sahi, Lawrence Bock, David P. Stumbo, J. Wallace Parce, Jay L. Goldman
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Patent number: RE43868Abstract: This invention provides navel capacitors comprising nanofiber enhanced surface area substrates and structures comprising such capacitors, as well as methods and uses for such capacitors.Type: GrantFiled: December 16, 2010Date of Patent: December 25, 2012Assignee: Nanosys, Inc.Inventors: Calvin Y. H. Chow, Robert Dubrow