Patents by Inventor Timothy Sands
Timothy Sands 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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Publication number: 20210262029Abstract: Two new de novo gain of function (GoF) variants in the KCNQ3 channel, R227 (at R1) and R230 (at R2), have been discovered by whole exome sequencing that cause neurodevelopmental disability (NDD), autism spectrum disorder (ASD), and frequent sleep-activated multifocal epileptiform discharge in children. Theses KCNQ3 mutations define a new phenotype herein called KCNQ3 GoF disorder, that contrasts both with self-limited neonatal epilepsy due to KCNQ3 partial loss-of-function, and with the neonatal or infantile-onset epileptic encephalopathies due to KCNQ2 GoF mutations. The KCNQ3 variants R230 and R227 described herein are at homologous positions to KCNQ2 missense mutations at R1:198; R2: R201. Therapies to treat KCNQ3 GoF disorders are described.Type: ApplicationFiled: April 30, 2021Publication date: August 26, 2021Inventor: Tristan Timothy Sands
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Patent number: 9784888Abstract: A titanium nitride-based metamaterial, and method for producing the same, is disclosed, consisting of ultrathin, smooth, and alternating layers of a plasmonic titanium nitride (TiN) material and a dielectric material, grown on a substrate to form a superlattice. The dielectric material is made of A1-xScxN, where ‘x’ ranges in value from 0.2 to 0.4. The layers of alternating material have sharp interfaces, and each layer can range from 1-20 nanometers in thickness. Metamaterials based on titanium TiN, a novel plasmonic building block, have many applications including, but not ‘limited to emission enhancers, computer security, etc. The use of nitrogen vacancy centers in diamond, and light emitting diode (LED) efficiency enhancement is of particular interest.Type: GrantFiled: October 9, 2013Date of Patent: October 10, 2017Assignee: PURDUE RESEARCH FOUNDATIONInventors: Gururaj Naik, Bivas Saha, Timothy Sands, Vladimir Shalaev, Alexandra Boltasseva
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Patent number: 8679630Abstract: A modified porous anodic alumina template (PAA) containing a thin CNT catalyst layer directly embedded into the pore walls. CNT synthesis using the template selectively catalyzes SWNTs and DWNTs from the embedded catalyst layer to the top PAA surface, creating a vertical CNT channel within the pores. Subsequent processing allows for easy contact metallization and adaptable functionalization of the CNTs and template for a myriad of applications.Type: GrantFiled: May 11, 2007Date of Patent: March 25, 2014Assignee: Purdue Research FoundationInventors: Matthew Ralph Maschmann, Timothy Scott Fisher, Timothy Sands, Rashid Bashir
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Publication number: 20130140517Abstract: A material for use in electronic circuits. The material includes a thin layer of gallium nitride (GaN), the thin layer of GaN produced in a high-volume production setting without mechanical planarization having a thickness of as low as 10 nm and a defect density as low as 105 per cm2.Type: ApplicationFiled: June 29, 2012Publication date: June 6, 2013Applicant: PURDUE RESEARCH FOUNDATIONInventors: Liang Tang, Yuefeng Wang, Michael Manfra, Gary Cheng, Timothy Sands
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Publication number: 20100176369Abstract: A light emitting diode having a metallized silicon substrate including a silicon base, a buffer layer disposed on the silicon base, a metal layer disposed on the buffer layer, and light emitting layers disposed on the metal layer. The buffer layer can be AlN, and the metal layer ZrN. The light emitting layers can include GaN and InGaN. The metallized silicon substrate can also include an oxidation prevention layer disposed on the metal layer. The oxidation prevention layer can be AlN. The light emitting diode can be formed using an organometallic vapor phase epitaxy process. The intermediate ZrN/AlN layers enable epitaxial growth of GaN on silicon substrates using conventional organometallic vapor phase epitaxy. The ZrN layer provides an integral back reflector, ohmic contact to n-GaN. The AlN layer provides a reaction barrier, thermally conductive interface layer, and electrical isolation layer.Type: ApplicationFiled: April 15, 2009Publication date: July 15, 2010Inventors: Mark Oliver, Vijay Rawat, Timothy Sands, Jeremy Schroeder
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Publication number: 20080176058Abstract: A modified porous anodic alumina template (PAA) containing a thin CNT catalyst layer directly embedded into the pore walls. CNT synthesis using the template selectively catalyzes SWNTs and DWNTs from the embedded catalyst layer to the top PAA surface, creating a vertical CNT channel within the pores. Subsequent processing allows for easy contact metallization and adaptable functionalization of the CNTs and template for a myriad of applications.Type: ApplicationFiled: May 11, 2007Publication date: July 24, 2008Inventors: Matthew Ralph Maschmann, Timothy Scott Fisher, Timothy Sands, Rashid Bashir
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Publication number: 20080092938Abstract: One-dimensional nanostructures having uniform diameters of less than approximately 200 nm. These inventive nanostructures, which we refer to as “nanowires”, include single-crystalline homostructures as well as heterostructures of at least two single-crystalline materials having different chemical compositions. Because single-crystalline materials are used to form the heterostructure, the resultant heterostructure will be single-crystalline as well. The nanowire heterostructures are generally based on a semiconducting wire wherein the doping and composition are controlled in either the longitudinal or radial directions, or in both directions, to yield a wire that comprises different materials. Examples of resulting nanowire heterostructures include a longitudinal heterostructure nanowire (LOHN) and a coaxial heterostructure nanowire (COHN).Type: ApplicationFiled: December 22, 2006Publication date: April 24, 2008Inventors: Arun Majumdar, Ali Shakouri, Timothy Sands, Peidong Yang, Samuel Mao, Richard Russo, Henning Feick, Eicke Weber, Hannes Kind, Michael Huang, Haoquan Yan, Yiying Wu, Rong Fan
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Publication number: 20070164270Abstract: One-dimensional nanostructures having uniform diameters of less than approximately 200 nm. These inventive nanostructures, which we refer to as “nanowires”, include single-crystalline homostructures as well as heterostructures of at least two single-crystalline materials having different chemical compositions. Because single-crystalline materials are used to form the heterostructure, the resultant heterostructure will be single-crystalline as well. The nanowire heterostructures are generally based on a semiconducting wire wherein the doping and composition are controlled in either the longitudinal or radial directions, or in both directions, to yield a wire that comprises different materials. Examples of resulting nanowire heterostructures include a longitudinal heterostructure nanowire (LOHN) and a coaxial heterostructure nanowire (COHN).Type: ApplicationFiled: December 22, 2006Publication date: July 19, 2007Inventors: Arun Majumdar, Ali Shakouri, Timothy Sands, Peidong Yang, Samuel Mao, Richard Russo, Henning Feick, Eicke Weber, Hannes Kind, Michael Huang, Haoquan Yan, Yiying Wu, Rong Fan
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Publication number: 20050161662Abstract: One-dimensional nanostructures having uniform diameters of less than approximately 200 nm. These inventive nanostructures, which we refer to as “nanowires”, include single-crystalline homostructures as well as heterostructures of at least two single-crystalline materials having different chemical compositions. Because single-crystalline materials are used to form the heterostructure, the resultant heterostructure will be single-crystalline as well. The nanowire heterostructures are generally based on a semiconducting wire wherein the doping and composition are controlled in either the longitudinal or radial directions, or in both directions, to yield a wire that comprises different materials. Examples of resulting nanowire heterostructures include a longitudinal heterostructure nanowire (LOHN) and a coaxial heterostructure nanowire (COHN).Type: ApplicationFiled: January 20, 2005Publication date: July 28, 2005Inventors: Arun Majumdar, Ali Shakouri, Timothy Sands, Peidong Yang, Samuel Mao, Richard Russo, Henning Feick, Eicke Weber, Hannes Kind, Michael Huang, Haoquan Yan, Yiying Wu, Rong Fan
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Publication number: 20050157301Abstract: The present invention relates to a functionally integrated microanalytical system for performing fluorescence spectroscopy. A source of fluorescence-exciting radiation, typically a LED, is integrated onto a substrate along with a photodetector and, in some embodiments, an optical filter. A pixel-to-point laser lift-off process is used to effect this component integration. For those cases in which a filter is required, a thin film bandgap filter is typically used, such as CdS or CdSxSe1-x (0<x<1). A disposable microchannel containing the sample and its fluorescent tag is mounted onto the integrated assembly of LED, photodetector and (optionally) filter. This configuration of components allows the microchannel and sample to be readily removed and replaced, facilitating rapid analysis of multiple samples. Multiple LEDS, detectors and filters (if present) can also be integrated onto the same substrate, permitting multiple wavelength analysis of the sample to be performed concurrently.Type: ApplicationFiled: July 30, 2004Publication date: July 21, 2005Applicant: The Regents of the University of CaliforniaInventors: J. Chediak, Zhongsheng Luo, Timothy Sands, Nathan Cheung, Luke Lee, Jeonggi Seo
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Patent number: 5624618Abstract: A multi-vane structure for incorporation in an aircraft gas turbine engine has vanes of complex geometry made of braided fibers which are continuous about the cavities defined by the vanes. These complex geometry parts are prepared by providing a plurality of removable mandrels, stacking the mandrels along a horizontal axis in a cavity end to cavity end configuration, braiding about the mandrels, cutting the mandrels adjacent the cavity end faces, side stacking the mandrels so the faces are placed in a parallel orientation and molding. Utilizing braided fibers instead of hand lay-up woven fibers eliminates seams and produces cavities having continuous fibers about the periphery thereof which substantially increases the strength and dimensional reproducibly of the part.Type: GrantFiled: June 7, 1995Date of Patent: April 29, 1997Assignee: Dow-United Technologies Composite Products, Inc.Inventors: Thomas P. Forman, Rance B. Fox, George E. Sabak, Timothy A. Sands, Paul A. Vallier
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Patent number: 5576079Abstract: A multi-vane structure for incorporation in an aircraft gas turbine engine has vanes of complex geometry made of braided fibers which are continuous about the cavities defined by the vanes. These complex geometry parts are prepared by providing a plurality of removable mandrels, stacking the mandrels along a horizontal axis in a cavity end to cavity end configuration, braiding about the mandrels, cutting the mandrels adjacent the cavity end faces, side stacking the mandrels so the faces are placed in a parallel orientation and molding. Utilizing braided fibers instead of hand lay-up woven fibers eliminates seams and produces cavities having continuous fibers about the periphery thereof which substantially increases the strength and dimensional reproducibly of the part.Type: GrantFiled: August 16, 1994Date of Patent: November 19, 1996Assignee: Dow-United Technologies Composite Products, Inc.Inventors: Thomas P. Forman, Rance B. Fox, George E. Sabak, Timothy A. Sands, Paul A. Vallier
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Patent number: 5399395Abstract: A multi-vane structure for incorporation in an aircraft gas turbine engine has vanes of complex geometry made of braided fibers which are continuous about the cavities defined by the vanes. These complex geometry parts are prepared by providing a plurality of removable mandrels, stacking the mandrels along a horizontal axis in a cavity end to cavity end configuration, braiding about the mandrels, cutting the mandrels adjacent the cavity end faces, side stacking the mandrels so the faces are placed in a parallel orientation and molding. Utilizing braided fibers instead of hand lay-up woven fibers eliminates seams and produces cavities having continuous fibers about the periphery thereof which substantially increases the strength and dimensional reproducibly of the part.Type: GrantFiled: November 15, 1993Date of Patent: March 21, 1995Assignee: Dow-United Technologies Composite Products Inc.Inventors: Thomas P. Forman, Rance B. Fox, George E. Sabak, Timothy A. Sands, Paul A. Vallier
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Patent number: 5098756Abstract: A self-extinguishing fire resistant elastic strap material is disclosed, as is a method of fabricating the same. The material is comprised of a tubular fabric of fireproof yarns having a hollow core, elastic and hence combustible yarns being disposed entirely within the core, the elastic yarns being frictionally clampingly engaged at spaced positions to the surrounding fabric, the elastic yarns being tensioned in the formed condition of the fabric to effect foreshortening of the fabric when the tension in the elastic yarns is relaxed.Type: GrantFiled: January 25, 1989Date of Patent: March 24, 1992Inventors: Mark P. Henderson, Timothy A. Sands, John A. Mortensen
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Patent number: 4755407Abstract: A fire and wear-resistant strap material particularly useful in conjunction with fire fighting apparatus is disclosed. The strap material comprises a carrier fabric, the surfaces of which have been provided with a flexible retro-reflective coating permanently bonded thereto. The carrier fabric is preferably comprised of aramid yarns which, while having low abrasion resistance, are rendered highly wear-resistant by the retro-reflective coating, which also functions to minimize heat transfer to the supporting fabric.Type: GrantFiled: September 22, 1986Date of Patent: July 5, 1988Assignee: C.M.Offray & Son, Inc.Inventors: John A. Mortensen, Timothy A. Sands, Mark P. Henderson, Richard P. Lee, Linda B. Patterson
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Patent number: 4664158Abstract: An elastic conductive fabric for use as a grounding strap and the method of making the same are disclosed. The fabric is woven utilizing elastic yarn ends intermingled with conductive yarn ends. The weaving process is carried out while the elastic yarn ends are distended by at least 150% and preferably 250-400% as compared with the relaxed condition thereof. Preferably the conductive yarn is woven in a two over one pattern so that when tension is released in the elastic ends, the crests of the conductive ends which span two picks will project a substantial distance from the fabric surface. The opposite face of the fabric may be comprised of insulative ends likewise woven in a two over one pattern to provide enlarged crests at said face. Locking yarn ends maintain the conductive crests in a perpendicular condition relative to the fabric body.Type: GrantFiled: February 26, 1986Date of Patent: May 12, 1987Assignee: C. M. Offray & Son, Inc.Inventor: Timothy A. Sands