Patents by Inventor Anshu A. Pradhan

Anshu A. Pradhan 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: 11181797
    Abstract: This disclosure provides connectors for smart windows. A smart window may incorporate an optically switchable pane. In one aspect, a window unit includes an insulated glass unit including an optically switchable pane. A wire assembly may be attached to the edge of the insulated glass unit and may include wires in electrical communication with electrodes of the optically switchable pane. A floating connector may be attached to a distal end of the wire assembly. The floating connector may include a flange and a nose, with two holes in the flange for affixing the floating connector to a first frame. The nose may include a terminal face that present two exposed contacts of opposite polarity. Pre-wired spacers improve fabrication efficiency and seal integrity of insulated glass units. Electrical connection systems include those embedded in the secondary seal of the insulated glass unit.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: November 23, 2021
    Assignee: View, Inc.
    Inventors: Stephen C. Brown, Dhairya Shrivastava, David Walter Groechel, Anshu A. Pradhan, Gordon Jack, Disha Mehtani, Robert T. Rozbicki
  • Publication number: 20210356833
    Abstract: Aspects of this disclosure concern controllers and control methods for applying a drive voltage to bus bars of optically switchable devices such as electrochromic devices. Such devices are often provided on windows such as architectural glass. In certain embodiments, the applied drive voltage is controlled in a manner that efficiently drives an optical transition over the entire surface of the electrochromic device. The drive voltage is controlled to account for differences in effective voltage experienced in regions between the bus bars and regions proximate the bus bars. Regions near the bus bars experience the highest effective voltage. In some cases, feedback may be used to monitor an optical transition. In these or other cases, a group of optically switchable devices may transition together over a particular duration to achieve approximately uniform tint states over time during the transition.
    Type: Application
    Filed: July 29, 2021
    Publication date: November 18, 2021
    Inventors: Gordon Jack, Sridhar K. Kailasam, Stephen C. Brown, Anshu A. Pradhan
  • Patent number: 11112674
    Abstract: Aspects of this disclosure concern controllers and control methods for applying a drive voltage to bus bars of optically switchable devices such as electrochromic devices. Such devices are often provided on windows such as architectural glass. In certain embodiments, the applied drive voltage is controlled in a manner that efficiently drives an optical transition over the entire surface of the electrochromic device. The drive voltage is controlled to account for differences in effective voltage experienced in regions between the bus bars and regions proximate the bus bars. Regions near the bus bars experience the highest effective voltage. In some cases, feedback may be used to monitor an optical transition. In these or other cases, a group of optically switchable devices may transition together over a particular duration to achieve approximately uniform tint states over time during the transition.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: September 7, 2021
    Assignee: View, Inc.
    Inventors: Gordon Jack, Sridhar K. Kailasam, Stephen C. Brown, Anshu A. Pradhan
  • Patent number: 11086182
    Abstract: Certain aspects pertain to methods of fabricating an optical device on a substantially transparent substrate that include a pre-deposition operation that removes a width of lower conductor layer at a distance from the outer edge of the substrate to form a pad at the outer edge. The pad and any deposited layers of the optical device may be removed in a post edge deletion operation.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: August 10, 2021
    Assignee: View, Inc.
    Inventors: Abhishek Anant Dixit, Todd William Martin, Anshu A. Pradhan
  • Patent number: 11078721
    Abstract: Thin-film devices, for example, multi-zone electrochromic windows, and methods of manufacturing are described. In certain cases, a multi-zone electrochromic window comprises a monolithic EC device on a transparent substrate and two or more tinting zones, wherein the tinting zones are configured for independent operation.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: August 3, 2021
    Assignee: View, Inc.
    Inventors: Dhairya Shrivastava, Robin Friedman, Vinod Khosla, Rao Mulpuri, Anshu A. Pradhan
  • Patent number: 11065845
    Abstract: Methods of manufacturing electrochromic windows are described. Insulated glass units (IGU's) are protected, e.g. during handling and shipping, by a protective bumper. The bumper can be custom made using IGU dimension data received from the IGU fabrication tool. The bumper may be made of environmentally friendly materials. Laser isolation configurations and related methods of patterning and/or configuring an electrochromic device on a substrate are described. Edge deletion is used to ensure a good seal between spacer and glass in an IGU and thus better protection of an electrochromic device sealed in the IGU. Configurations for protecting the electrochromic device edge in the primary seal and maximizing viewable area in an electrochromic pane of an IGU are also described.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: July 20, 2021
    Assignee: View, Inc.
    Inventors: Ronald M. Parker, Robert T. Rozbicki, Yashraj Bhatnagar, Abhishek Anant Dixit, Anshu A. Pradhan
  • Publication number: 20210208468
    Abstract: Aspects of this disclosure concern controllers and control methods for applying a drive voltage to bus bars of optically switchable devices such as electrochromic devices. Such devices are often provided on windows such as architectural glass. In certain embodiments, the applied drive voltage is controlled in a manner that efficiently drives an optical transition over the entire surface of the electrochromic device. The drive voltage is controlled to account for differences in effective voltage experienced in regions between the bus bars and regions proximate the bus bars. Regions near the bus bars experience the highest effective voltage.
    Type: Application
    Filed: February 25, 2021
    Publication date: July 8, 2021
    Inventors: Gordon Jack, Sridhar K. Kailasam, Stephen C. Brown, Anshu A. Pradhan
  • Patent number: 11054711
    Abstract: Electromagnetic-shielding, electrochromic windows comprising a first multi-layer conductor, an electrochromic stack disposed on the first multi-layer conductor, and a second multi-layer conductor, wherein the one or more multi-layer conductors with an electromagnetic shielding stack configured to be activated to block electromagnetic communication signals through the windows.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: July 6, 2021
    Assignee: View, Inc.
    Inventors: Dhairya Shrivastava, Stephen Clark Brown, Robert T. Rozbicki, Anshu A. Pradhan, Sridhar Karthik Kailasam, Robin Friedman, Gordon E. Jack, Dane Thomas Gillaspie
  • Publication number: 20210191221
    Abstract: Onboard EC window controllers are described. The controllers are configured in close proximity to the EC window, for example, within the IGU. The controller may be part of a window assembly, which includes an IGU having one or more EC panes, and thus does not have to be matched with the EC window, and installed, in the field. The window controllers described herein have a number of advantages because they are matched to the IGU containing one or more EC devices and their proximity to the EC panes of the window overcomes a number of problems associated with conventional controller configurations.
    Type: Application
    Filed: March 2, 2021
    Publication date: June 24, 2021
    Inventors: Dhairya Shrivastava, Anshu A. Pradhan, Stephen Clark Brown, David Walter Groechel, Robert T. Rozbicki
  • Publication number: 20210191214
    Abstract: Electrochromic devices with multi-layer conductors including one or more of a defect mitigation insulating layer, a color tuning layer and metal layer pair, and a transparent conductive oxide layer.
    Type: Application
    Filed: March 4, 2021
    Publication date: June 24, 2021
    Inventors: Robert T. Rozbicki, Anshu A. Pradhan, Sridhar Karthik Kailasam, Robin Friedman, Gordon E. Jack, Dane Thomas Gillaspie
  • Publication number: 20210191215
    Abstract: Conventional electrochromic devices frequently suffer from poor reliability and poor performance. Improvements are made using entirely solid and inorganic materials. Electrochromic devices are fabricated by forming an ion conducting electronically-insulating interfacial region that serves as an IC layer. In some methods, the interfacial region is formed after formation of an electrochromic and a counter electrode layer. The interfacial region contains an ion conducting electronically-insulating material along with components of the electrochromic and/or the counter electrode layer. Materials and microstructure of the electrochromic devices provide improvements in performance and reliability over conventional devices.
    Type: Application
    Filed: March 8, 2021
    Publication date: June 24, 2021
    Inventors: Anshu A. Pradhan, Robert T. Rozbicki
  • Publication number: 20210181593
    Abstract: The embodiments herein relate to methods for controlling an optical transition in an optically switchable device, and optically switchable devices configured to perform such methods. In various embodiments, non-optical (e.g., electrical) feedback is used to help control an optical transition. The feedback may be used for a number of different purposes. In many implementations, the feedback is used to control an ongoing optical transition.
    Type: Application
    Filed: January 29, 2021
    Publication date: June 17, 2021
    Inventor: Anshu A. Pradhan
  • Patent number: 11030929
    Abstract: The embodiments herein relate to methods for controlling an optical transition and the ending tint state of an optically switchable device, and optically switchable devices configured to perform such methods. In various embodiments, non-optical (e.g., electrical) feedback is used to help control an optical transition. The feedback may be used for a number of different purposes. In many implementations, the feedback is used to control an ongoing optical transition. In some embodiments a transfer function is used calibrate optical drive parameters to control the tinting state of optically switching devices.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: June 8, 2021
    Assignee: View, Inc.
    Inventors: Anshu A. Pradhan, Abhishek Anant Dixit
  • Publication number: 20210163346
    Abstract: Methods for protecting transparent electronically conductive layers on glass substrates are described herein. Methods include depositing a sacrificial coating during deposition of the transparent electronically conductive layer, before packing the glass substrate for storage or shipping, after unpacking glass substrates from a stack of glass substrates, and/or after a washing operation prior to fabricating an electrochromic stack on the transparent electronically conductive layer. Methods also include removing the sacrificial coating during a washing operation, during tempering, or prior to depositing an electrochromic stack by, e.g., heating the sacrificial coating or exposing the sacrificial coating to an inert plasma.
    Type: Application
    Filed: February 12, 2021
    Publication date: June 3, 2021
    Inventors: Ronald M. Parker, Anshu A. Pradhan, Abhishek Anant Dixit, Douglas Dauson
  • Publication number: 20210162719
    Abstract: Methods are provided for fabricating electrochromic devices that mitigate formation of short circuits under a top bus bar without predetermining where top bus bars will be applied on the device. Devices fabricated using such methods may be deactivated under the top bus bar, or may include active material under the top bus bar. Methods of fabricating devices with active material under a top bus bar include depositing a modified top bus bar, fabricating self-healing layers in the electrochromic device, and modifying a top transparent conductive layer of the device prior to applying bus bars.
    Type: Application
    Filed: February 12, 2021
    Publication date: June 3, 2021
    Inventors: Ronald M. Parker, Anshu A. Pradhan, Abhishek Anant Dixit, Douglas Dauson
  • Patent number: 10996533
    Abstract: Conventional electrochromic devices frequently suffer from poor reliability and poor performance. Improvements are made using entirely solid and inorganic materials. Electrochromic devices are fabricated by forming an ion conducting electronically-insulating interfacial region that serves as an IC layer. In some methods, the interfacial region is formed after formation of an electrochromic and a counter electrode layer. The interfacial region contains an ion conducting electronically-insulating material along with components of the electrochromic and/or the counter electrode layer. Materials and microstructure of the electrochromic devices provide improvements in performance and reliability over conventional devices.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: May 4, 2021
    Assignee: View, Inc.
    Inventors: Anshu A. Pradhan, Robert T. Rozbicki
  • Patent number: 10989977
    Abstract: Onboard EC window controllers are described. The controllers are configured in close proximity to the EC window, for example, within the IGU. The controller may be part of a window assembly, which includes an IGU having one or more EC panes, and thus does not have to be matched with the EC window, and installed, in the field. The window controllers described herein have a number of advantages because they are matched to the IGU containing one or more EC devices and their proximity to the EC panes of the window overcomes a number of problems associated with conventional controller configurations.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: April 27, 2021
    Assignee: View, Inc.
    Inventors: Dhairya Shrivastava, Anshu A. Pradhan, Stephen Clark Brown, David Walter Groechel, Robert T. Rozbicki
  • Publication number: 20210116770
    Abstract: Controllers and control methods apply a drive voltage to bus bars of a thin film optically switchable device. The applied drive voltage is provided at a level that drives a transition over the entire surface of the optically switchable device but does not damage or degrade the device. This applied voltage produces an effective voltage at all locations on the face of the device that is within a bracketed range. The upper bound of this range is associated with a voltage safely below the level at which the device may experience damage or degradation impacting its performance in the short term or the long term. At the lower boundary of this range is an effective voltage at which the transition between optical states of the device occurs relatively rapidly. The level of voltage applied between the bus bars is significantly greater than the maximum value of the effective voltage within the bracketed range.
    Type: Application
    Filed: December 23, 2020
    Publication date: April 22, 2021
    Inventors: Anshu A. Pradhan, Disha Mehtani, Gordon Jack
  • Publication number: 20210116769
    Abstract: Networks of electrochromic windows and methods of commissioning the windows on such networks are described. The commissioning may involve determining where each electrochromic window is installed and/or which controller is associated with which electrochromic window. In various cases, a number of windows may be simultaneously commissioned.
    Type: Application
    Filed: December 23, 2020
    Publication date: April 22, 2021
    Inventors: Dhairya Shrivastava, Alexander Rumer, Anshu A. Pradhan
  • Publication number: 20210103195
    Abstract: Methods are provided for fabricating electrochromic devices that mitigate formation of short circuits under a top bus bar without predetermining where top bus bars will be applied on the device. Devices fabricated using such methods may be deactivated under the top bus bar, or may include active material under the top bus bar. Methods of fabricating devices with active material under a top bus bar include depositing a modified top bus bar, fabricating self-healing layers in the electrochromic device, and modifying a top transparent conductive layer of the device prior to applying bus bars.
    Type: Application
    Filed: December 15, 2020
    Publication date: April 8, 2021
    Inventors: Sridhar K. Kailasam, Dhairya Shrivastava, Zhiwei Cai, Robert T. Rozbicki, Dane Gillaspie, Todd Martin, Anshu A. Pradhan, Ronald M. Parker