Patents by Inventor Anurag Tyagi

Anurag Tyagi 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: 11099393
    Abstract: A micro-LED includes a light emitting device that emits a light beam surface—normally and a plurality of semiconductor layers that modify the light beam. Each semiconductor layer includes a first lateral region and a second lateral region, where the first lateral region and the second lateral region are characterized by different respective refractive indices. The first lateral regions of the plurality of semiconductor layers are arranged in two or more different lateral areas of the semiconductor light source. The second lateral region in each semiconductor layer of the plurality of semiconductor layers includes a semiconductor material with a different respective composition. The plurality of semiconductor layers form a planar optical component that is used to, for example, collimate, converge, diverge, or deflect the light beam emitted by the light emitting device.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: August 24, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Maik Andre Scheller, Anurag Tyagi
  • Publication number: 20210157142
    Abstract: A micro-LED includes a light emitting device that emits a light beam surface-normally and a plurality of semiconductor layers that modify the light beam. Each semiconductor layer includes a first lateral region and a second lateral region, where the first lateral region and the second lateral region are characterized by different respective refractive indices. The first lateral regions of the plurality of semiconductor layers are arranged in two or more different lateral areas of the semiconductor light source. The second lateral region in each semiconductor layer of the plurality of semiconductor layers includes a semiconductor material with a different respective composition. The plurality of semiconductor layers form a planar optical component that is used to, for example, collimate, converge, diverge, or deflect the light beam emitted by the light emitting device.
    Type: Application
    Filed: November 22, 2019
    Publication date: May 27, 2021
    Inventors: Maik Andre Scheller, Anurag Tyagi
  • Publication number: 20210151498
    Abstract: LED apparatuses featuring etched mesas and techniques for manufacturing LED apparatuses are described, including techniques for reducing surface recombination and techniques for charge carrier confinement. Etched facets of an LED mesa can be passivated using epitaxial regrowth of one or more semiconductor regrowth layers. The one or more semiconductor regrowth layers can include a transition layer. The transition layer can be configured with a bandgap energy between that of layers that are on opposite sides of the transition layer. A transition layer can separate an etched facet and another regrowth layer or separate two regrowth layers. In some instances, selective etching can be performed to preferentially etch a quantum well layer relative to a barrier layer. The selective etching removes surface imperfections, which contribute to surface recombination and which tend to be more prevalent in etched facets of the quantum well layer than etched facets of the barrier layer.
    Type: Application
    Filed: November 12, 2020
    Publication date: May 20, 2021
    Inventors: Anurag TYAGI, James Ronald BONAR, Gareth VALENTINE
  • Publication number: 20210126164
    Abstract: A light source includes a p-type semiconductor layer, an n-type semiconductor layer, and an active region between the p-type semiconductor layer and the n-type semiconductor layer and configured to emit light. The active region includes a plurality of barrier layers and one or more quantum well layers. The plurality of barrier layers of the active region includes at least one n-doped barrier layer that includes an n-type dopant. The active region is characterized by a lateral linear dimension equal to or less than about 10 ?m. The n-type dopant includes, for example, silicon, selenium, or tellurium.
    Type: Application
    Filed: October 27, 2020
    Publication date: April 29, 2021
    Inventors: Markus BROELL, David HWANG, Steven David LESTER, Anurag TYAGI, Michael GRUNDMANN, Guillaume LHEUREUX, Alexander TONKIKH
  • Publication number: 20210056259
    Abstract: A method and system generate customized financial document templates in a document preparation system, according to one embodiment. The method and system receive document data from a user corresponding to a document including a plurality of custom data fields in a custom template. The method and system map the custom data fields to system data fields from a relatively small subset of data fields selected from a system data field pool based on the characteristics of the user. The method and system generate a custom form template based on the document data and the mapping of the custom data fields to system data fields.
    Type: Application
    Filed: November 6, 2020
    Publication date: February 25, 2021
    Applicant: Intuit Inc.
    Inventors: Prabhat Hegde, Bala Dutt, Sivaraj Iyamperumal, Roshni Neogy, Anurag Tyagi
  • Patent number: 10853567
    Abstract: A method and system generate customized financial document templates in a document preparation system, according to one embodiment. The method and system receive document data from a user corresponding to a document including a plurality of custom data fields in a custom template. The method and system map the custom data fields to system data fields from a relatively small subset of data fields selected from a system data field pool based on the characteristics of the user. The method and system generate a custom form template based on the document data and the mapping of the custom data fields to system data fields.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: December 1, 2020
    Assignee: Intuit Inc.
    Inventors: Prabhat Hegde, Bala Dutt, Sivaraj Iyamperumal, Roshni Neogy, Anurag Tyagi
  • Publication number: 20200313036
    Abstract: Disclosed herein are methods, systems, and apparatuses for an light emitting diode (LED) array apparatus. In some embodiments, the LED array apparatus may include a plurality of mesas etched from a layered epitaxial structure. The layered epitaxial structure may include a P-type doped semiconductor layer, a active layer, and an N-type doped semiconductor layer. The LED array apparatus may also include one or more regrowth semiconductor layers, including a first regrowth semiconductor layer, which may be grown epitaxially over etched facets of the plurality of mesas. In some cases, for each mesa, the first regrowth semiconductor layer may overlay etched facets of the P-type doped semiconductor layer, the active layer, and the N-type doped semiconductor layer, around an entire perimeter of the mesa.
    Type: Application
    Filed: March 29, 2020
    Publication date: October 1, 2020
    Inventors: Markus BROELL, Michael GRUNDMANN, David HWANG, Stephan LUTGEN, Brian Matthew MCSKIMMING, Anurag TYAGI
  • Publication number: 20190129931
    Abstract: A method and system generate customized financial document templates in a document preparation system, according to one embodiment. The method and system receive document data from a user corresponding to a document including a plurality of custom data fields in a custom template. The method and system map the custom data fields to system data fields from a relatively small subset of data fields selected from a system data field pool based on the characteristics of the user. The method and system generate a custom form template based on the document data and the mapping of the custom data fields to system data fields.
    Type: Application
    Filed: December 26, 2017
    Publication date: May 2, 2019
    Applicant: Intuit Inc.
    Inventors: Prabhat Hegde, Bala Dutt, Sivaraj Iyamperumal, Roshni Neogy, Anurag Tyagi
  • Publication number: 20180152004
    Abstract: An optoelectronic device grown on a miscut of GaN, wherein the miscut comprises a semi-polar GaN crystal plane (of the GaN) miscut x degrees from an m-plane of the GaN and in a c-direction of the GaN, where ?15<x<?1 and 1<x<15 degrees.
    Type: Application
    Filed: January 26, 2018
    Publication date: May 31, 2018
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Po Shan Hsu, Kathryn M. Kelchner, Robert M. Farrell, Daniel A. Haeger, Hiroaki Ohta, Anurag Tyagi, Shuji Nakamura, Steven P. DenBaars, James S. Speck
  • Patent number: 9934213
    Abstract: A method and system for generation of a customized financial document template in a financial management system, according to one embodiment. The method and system includes receiving a financial document that includes a plurality of data entries, according to one embodiment. The method and system includes mapping the plurality of data entries to a plurality of data fields of the financial management system, according to one embodiment. Mapping the plurality of data entries includes identifying characteristics of each of the plurality of data entries, and determining a relevance of the plurality of the data fields to the plurality of the data entries, at least partially based on the characteristics of the plurality of data entries, according to one embodiment. The method and system includes populating a custom financial document template, at least partially based on the mapping of the plurality of data entries to the plurality of data fields.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: April 3, 2018
    Assignee: Intuit Inc.
    Inventors: Bala Dutt, Rahul Vankudothu, Prabhat Hegde, Anurag Tyagi
  • Patent number: 9917422
    Abstract: An optoelectronic device grown on a miscut of GaN, wherein the miscut comprises a semi-polar GaN crystal plane (of the GaN) miscut x degrees from an m-plane of the GaN and in a c-direction of the GaN, where ?15<x<?1 and 1<x<15 degrees.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: March 13, 2018
    Assignee: The Regents of the University of California
    Inventors: Po Shan Hsu, Kathryn M. Kelchner, Robert M. Farrell, Daniel A. Haeger, Hiroaki Ohta, Anurag Tyagi, Shuji Nakamura, Steven P. DenBaars, James S. Speck
  • Patent number: 9653650
    Abstract: A method for providing (Al,Ga,In)N thin films on Ga-face c-plane (Al,Ga,In)N substrates using c-plane surfaces with a miscut greater than at least 0.35 degrees toward the m-direction. Light emitting devices are formed on the smooth (Al,Ga,In)N thin films. Devices fabricated on the smooth surfaces exhibit improved performance.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: May 16, 2017
    Assignee: Soraa, Inc.
    Inventors: Arpan Chakraborty, Michael Grundmann, Anurag Tyagi
  • Patent number: 9646827
    Abstract: Disclosed is a method for processing GaN based substrate material for manufacturing light-emitting diodes, lasers, and other types of devices. In various embodiments, a GaN substrate is exposed to nitrogen and hydrogen at a high temperature. This process causes the surface of the GaN substrate to anneal and become smooth. Then other processes, such as growing epitaxial layers over the surface of GaN substrate, can be performed over the smooth surface of the GaN substrate.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: May 9, 2017
    Assignee: Soraa, Inc.
    Inventors: Arpan Chakraborty, Anurag Tyagi
  • Publication number: 20160268476
    Abstract: A method for providing (Al,Ga,In)N thin films on Ga-face c-plane (Al,Ga,In)N substrates using c-plane surfaces with a miscut greater than at least 0.35 degrees toward the in-direction. Light emitting devices are formed on the smooth (Al,Ga,In)N thin films. Devices fabricated on the smooth surfaces exhibit improved performance.
    Type: Application
    Filed: January 11, 2016
    Publication date: September 15, 2016
    Inventors: ARPAN CHAKRABORTY, MICHAEL GRUNDMANN, ANURAG TYAGI
  • Patent number: 9236530
    Abstract: A method for providing (Al,Ga,In)N thin films on Ga-face c-plane (Al,Ga,In)N substrates using c-plane surfaces with a miscut greater than at least 0.35 degrees toward the m-direction. Light emitting devices are formed on the smooth (Al,Ga,In)N thin films. Devices fabricated on the smooth surfaces exhibit improved performance.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: January 12, 2016
    Assignee: Soraa, Inc.
    Inventors: Arpan Chakraborty, Michael Grundmann, Anurag Tyagi
  • Patent number: 9159553
    Abstract: A dislocation-free high quality template with relaxed lattice constant, fabricated by spatially restricting misfit dislocation(s) around heterointerfaces. This can be used as a template layer for high In composition devices. Specifically, the present invention prepares high quality InGaN templates (In composition is around 5-10%), and can grow much higher In-composition InGaN quantum wells (QWs) (or multi quantum wells (MQWs)) on these templates than would otherwise be possible.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: October 13, 2015
    Assignee: The Regents of the University of California
    Inventors: Hiroaki Ohta, Feng Wu, Anurag Tyagi, Arpan Chakraborty, James S. Speck, Steven P. DenBaars, Shuji Nakamura, Erin C. Young
  • Publication number: 20150255959
    Abstract: An optoelectronic device grown on a miscut of GaN, wherein the miscut comprises a semi-polar GaN crystal plane (of the GaN) miscut x degrees from an m-plane of the GaN and in a c-direction of the GaN, where ?15<x<?1 and 1<x<15 degrees.
    Type: Application
    Filed: May 26, 2015
    Publication date: September 10, 2015
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Po Shan Hsu, Kathryn M. Kelchner, Robert M. Farrell, Daniel A. Haeger, Hiroaki Ohta, Anurag Tyagi, Shuji Nakamura, Steven P. DenBaars, James S. Speck
  • Patent number: 9077151
    Abstract: An optoelectronic device grown on a miscut of GaN, wherein the miscut comprises a semi-polar GaN crystal plane (of the GaN) miscut x degrees from an m-plane of the GaN and in a c-direction of the GaN, where ?15<x<?1 and 1<x<15 degrees.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: July 7, 2015
    Assignee: The Regents of the University of California
    Inventors: Po Shan Hsu, Kathryn M. Kelchner, Robert M. Farrell, Daniel A. Haeger, Hiroaki Ohta, Anurag Tyagi, Shuji Nakamura, Steven P. DenBaars, S. James Speck
  • Patent number: 9040326
    Abstract: A III-nitride light emitting diode (LED) and method of fabricating the same, wherein at least one surface of a semipolar or nonpolar plane of a III-nitride layer of the LED is textured, thereby forming a textured surface in order to increase light extraction. The texturing may be performed by plasma assisted chemical etching, photolithography followed by etching, or nano-imprinting followed by etching.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: May 26, 2015
    Assignee: The Regents of the University of California
    Inventors: Hong Zhong, Anurag Tyagi, Kenneth J. Vampola, James S. Speck, Steven P. DenBaars, Shuji Nakamura
  • Publication number: 20140376584
    Abstract: An epitaxial structure for a III-Nitride based optical device, comprising an active layer with anisotropic strain on an underlying layer, where a lattice constant and strain in the underlying layer are partially or fully relaxed in at least one direction due to a presence of misfit dislocations, so that the anisotropic strain in the active layer is modulated by the underlying layer.
    Type: Application
    Filed: September 10, 2014
    Publication date: December 25, 2014
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Hiroaki Ohta, Feng Wu, Anurag Tyagi, Arpan Chakraborty, James S. Speck, Steven P. DenBaars, Shuji Nakamura, Erin C. Young