Patents by Inventor J. Wallace Parce
J. Wallace Parce 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).
-
Patent number: 8440369Abstract: 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: July 17, 2012Date of Patent: May 14, 2013Assignee: Nanosys, Inc.Inventors: Chunming Niu, Calvin Y. H. Chow, Stephen A. Empedocles, J. Wallace Parce
-
Patent number: 8425803Abstract: 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 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: November 9, 2009Date of Patent: April 23, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: J. Wallace Parce, Paul Bernatis, Robert Dubrow, William P. Freeman, Joel Gamoras, Shihai Kan, Andreas Meisel, Baixin Qian, Jeffery A. Whiteford, Jonathan Ziebarth
-
Patent number: 8357475Abstract: 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: May 31, 2011Date of Patent: January 22, 2013Assignee: Nanosys, Inc.Inventors: Chunming Niu, Calvin Y. H. Chow, Stephen A. Empedocles, J. Wallace Parce
-
Publication number: 20120282540Abstract: 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: ApplicationFiled: July 17, 2012Publication date: November 8, 2012Applicant: NANOSYS, INC.Inventors: Chunming Niu, Calvin Y.H. Chow, Stephen A. Empedocles, J. Wallace Parce
-
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
-
Publication number: 20120273353Abstract: The present invention provides novel methods for performing pulsed field mobility shift assays in microfluidic devices. In particular, the methods of the invention utilize differences between electrophoretic mobilities (e.g., as between reactants and products, especially in non-fluorogenic reactions) in order to separate the species and thus analyze the reaction.Type: ApplicationFiled: July 9, 2012Publication date: November 1, 2012Applicant: Caliper Life Sciences, Inc.Inventors: Andrea W. Chow, John C. Owicki, J. Wallace Parce
-
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
-
Patent number: 8252164Abstract: The present invention provides methods and systems for nanowire alignment and deposition. Energizing (e.g., an alternating current electric field) is used to align and associate nanowires with electrodes. By modulating the energizing, the nanowires are coupled to the electrodes such that they remain in place during subsequent wash and drying steps. The invention also provides methods for transferring nanowires from one substrate to another in order to prepare various device substrates. The present invention also provides methods for monitoring and controlling the number of nanowires deposited at a particular electrode pair, as well as methods for manipulating nanowires in solution.Type: GrantFiled: May 23, 2011Date of Patent: August 28, 2012Assignees: Nanosys, Inc., Sharp Kabushiki KaishaInventors: Samuel Martin, Xiangfeng Duan, Katsumasa Fujii, James M. Hamilton, Hiroshi Iwata, Francisco Leon, Jeffrey Miller, Tetsu Negishi, Hiroshi Ohki, J. Wallace Parce, Cheri X. Y. Pereira, Paul John Schuele, Akihide Shibata, David P. Stumbo, Yasunobu Okada
-
Publication number: 20120204964Abstract: The invention provides methods of controlling environmental conditions within a fluidic system, where such environmental conditions can affect the operation of the system in its desired function, and fluidic channels, devices, and systems that are used in practicing these methods. Such methods are generally directed to environmental control fluids, the movement of such fluids through these systems, and the interaction of these fluids with other components of the system, e.g., other fluids or solid components of the system.Type: ApplicationFiled: April 23, 2012Publication date: August 16, 2012Applicant: Caliper Life Sciences, Inc.Inventors: J. Wallace Parce, Yung-mae M. Yao, Donald J. Morrissey, JR.
-
Patent number: 8241883Abstract: The present invention provides novel microfluidic devices and methods for performing pulsed field mobility shift assays in microfluidic devices. In particular the devices and methods of the invention utilize differences between electrophoretic mobilities (e.g., as between reactants and products, especially in non-fluorogenic reactions) in order to separate the species and thus analyze the reaction.Type: GrantFiled: April 25, 2006Date of Patent: August 14, 2012Assignee: Caliper Life Sciences, Inc.Inventors: Andrea W. Chow, John C. Owicki, J. Wallace Parce
-
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
-
Publication number: 20120068118Abstract: 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 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 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: ApplicationFiled: October 20, 2011Publication date: March 22, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: J. Wallace Parce, Paul Bernatis, Robert Dubrow, William P. Freeman, Joel Gamoras, Shihai Kan, Andreas Meisel, Baixin Qian, Jeffery A. Whiteford, Jonathan Ziebarth
-
Publication number: 20120031486Abstract: The present invention relates to nanoparticle compositions for use in photovoltaic cells. Nanoparticles are utilized to provide increased scattering and also wavelength shifting to increase the efficiency of the photovoltaic cells. Exemplary nanoparticles include colloidal metal and fluorescent nanoparticles.Type: ApplicationFiled: April 14, 2010Publication date: February 9, 2012Applicant: NANOSYS, INC.Inventors: J. Wallace Parce, Jian Chen
-
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
-
Publication number: 20110284380Abstract: The present invention provides methods and systems for nanowire alignment and deposition. Energizing (e.g., an alternating current electric field) is used to align and associate nanowires with electrodes. By modulating the energizing, the nanowires are coupled to the electrodes such that they remain in place during subsequent wash and drying steps. The invention also provides methods for transferring nanowires from one substrate to another in order to prepare various device substrates. The present invention also provides methods for monitoring and controlling the number of nanowires deposited at a particular electrode pair, as well as methods for manipulating nanowires in solution.Type: ApplicationFiled: May 23, 2011Publication date: November 24, 2011Inventors: Samuel MARTIN, Xiangfeng Duan, Katsumasa Fujii, James M. Hamilton, Hiroshi Iwata, Francisco Leon, Jeffrey Miller, Tetsu Negishi, Hiroshi Ohki, J. Wallace Parce, Cheri X.Y. Pereira, Paul John Schuele, Akihide Shibata, David P. Stumbo, Yasunobu Okada
-
Publication number: 20110251295Abstract: Methods for producing electronic grade metal nanostructures having low levels of contaminants are provided. Monolayer arrays, populations, and devices including such electronic grade nanostructures are described. In addition, novel methods and compositions for production of Group 10 metal nanostructures and for production of ruthenium nanostructures are provided, along with methods for recovering nanostructures from suspension.Type: ApplicationFiled: May 27, 2011Publication date: October 13, 2011Applicant: NANOSYS, INC.Inventors: Srikanth Ranganathan, Paul Bernatis, Joel Gamoras, Chao Liu, J. Wallace Parce
-
Patent number: 8030161Abstract: A nonvolatile memory cell includes a substrate comprising a source, drain, and channel between the source and the drain. A tunnel dielectric layer overlies the channel, and a localized charge storage layer is disposed between the tunnel dielectric layer and a control dielectric layer. A gate electrode has a first surface adjacent to the control dielectric layer, and the first surface includes a midsection and two edge portions. According to one embodiment, the midsection defines a plane, and at least one edge portion extends away from the plane. Preferably, the edge portion extending away from the plane converges toward an opposing second surface of the gate electrode. According to another embodiment, the gate electrode of the nonvolatile memory cell includes a first sublayer and a second sublayer of a different width on the first sublayer.Type: GrantFiled: May 15, 2008Date of Patent: October 4, 2011Assignee: Nanosys, Inc.Inventors: Xiangfeng Duan, Jian Chen, J. Wallace Parce, Francisco A. Leon
-
Publication number: 20110229795Abstract: 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: ApplicationFiled: May 31, 2011Publication date: September 22, 2011Applicant: NANOSYS, INC.Inventors: Chunming Niu, Calvin Y.H. Chow, Stephen A. Empedocles, J. Wallace Parce
-
Publication number: 20110204432Abstract: Methods for forming or patterning nanostructure arrays are provided. The methods involve formation of arrays on coatings comprising nanostructure association groups, formation of arrays in spin-on-dielectrics, solvent annealing after nanostructure deposition, 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). Methods for protecting nanostructures from fusion during high temperature processing are also provided.Type: ApplicationFiled: April 29, 2011Publication date: August 25, 2011Applicant: NANOSYS, INC.Inventors: Jian Chen, Xiangfeng Duan, Chao Liu, Madhuri L. Nallabolu, J. Wallace Parce, Srikanth Ranganathan
-
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