Patents by Inventor Ravi Chandra

Ravi Chandra 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: 12386203
    Abstract: The present disclosure is directed generally to a lens that provides a stop signal to a myopic eye, over a substantial portion of the spectacle lens that the viewer is using. The present disclosure is directed to devices, methods and/or systems of imposing a stop signal to eye growth, using a spectacle lens in conjunction with a micro lenslet array. The present disclosure is also directed to devices, methods and/or systems of modifying incoming light through spectacle lenses that utilizes chromatic cues to decelerate the rate of myopia progression. The present disclosure is directed to devices, methods and/or systems of imposing a stop signal to eye growth, using a spectacle lens in conjunction with a refractive optical element and/or diffractive optical element that offer conflicting or contradictory optical signals at a wavelength between 510 nm and 610 nm.
    Type: Grant
    Filed: December 5, 2023
    Date of Patent: August 12, 2025
    Assignee: Brien Holden Vision Institute Limited
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Cathleen Fedtke, Padmaja Sankaridurg, Arthur Ho
  • Publication number: 20250247260
    Abstract: Devices, systems, methods, and processes for transmitting power and managing power transmission are described herein. A device may be configured to transmit power to multiple user devices. The device can receive, from a licensing server, a power utilization license indicative of a power consumption threshold. The device can transmit power to the user devices based on the power utilization license. The device may monitor a power consumption of the user devices. The device can identify a license gap based on a difference in measured power consumption of the user devices and the power consumption threshold. The device may transmit a signed utilization signal indicative of the measured power consumption and the license gap. The licensing server can provide a temporary power utilization license by way of a synchronization response signal. The device can thereby transmit power to the one or more user devices based on the temporary power utilization license.
    Type: Application
    Filed: January 30, 2024
    Publication date: July 31, 2025
    Inventors: Ravi Chandra, Pradeep K. Kathail, Eric A. Voit
  • Patent number: 12360398
    Abstract: The present disclosure is directed to lenses, devices, methods and/or systems for addressing refractive error. Certain embodiments are directed to changing or controlling the wavefront of the light entering a human eye. The lenses, devices, methods and/or systems can be used for correcting, addressing, mitigating or treating refractive errors and provide excellent vision at distances encompassing far to near without significant ghosting. The refractive error may for example arise from myopia, hyperopia, or presbyopia with or without astigmatism. Certain disclosed embodiments of lenses, devices and/or methods include embodiments that address foveal and/or peripheral vision. Exemplary of lenses in the fields of certain embodiments include contact lenses, corneal onlays, corneal inlays, and lenses for intraocular devices both anterior and posterior chamber, accommodating intraocular lenses, electro-active spectacle lenses and/or refractive surgery.
    Type: Grant
    Filed: March 28, 2022
    Date of Patent: July 15, 2025
    Assignee: Brien Holden Vision Institute Limited
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Arthur Ho, Brien Anthony Holden
  • Publication number: 20250216701
    Abstract: Devices and/or systems are used to modify the incoming light through spectacle lenses that utilize at least one auxiliary or regional optical element, to provide extension or elongation of the depth of focus for a myopic eye. Methods are used to correct myopia and control or reduce the rate of myopia progression utilizing extension of the depth of focus provided by the at least one auxiliary or regional optical element configured within, or in conjunction, combination, or juxtaposition with spectacle lenses. An axicon, a light sword element, or a peacock eye element is provided within the regional optical element or a sub-lens. A plurality of axicons, light sword elements or peacock eye elements may be configured within, or in conjunction, combination, or juxtaposition with spectacle lenses.
    Type: Application
    Filed: March 18, 2025
    Publication date: July 3, 2025
    Inventors: Ravi Chandra BAKARAJU, Klaus EHRMANN
  • Patent number: 12345961
    Abstract: The present disclosure generally relates to contact lenses for use with eyes experiencing eye-length related disorders, like myopia. This invention relates to contact lens for managing myopia wherein the contact lens comprises of an optical zone about an optical axis and a non-optical peripheral carrier zone about the optical zone; wherein the optical zone is configured with a substantially single vision power profile providing correction for the eye, and a decentred second region configured with an astigmatic, or toric, or asymmetric power distribution, the second region located substantially away from the optical centre and configured to provide at least in part a regional conoid or interval of Sturm producing an optical stop signal for the eye; and wherein the non-optical peripheral carrier zone is configured with a thickness profile that is substantially rotationally symmetric to further provide a temporally and spatially varying stop signals to reduce myopia progression.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: July 1, 2025
    Assignees: Nthalmic Holding Pty Ltd, Brighten Optix Corp.
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Fabian Conrad
  • Patent number: 12339928
    Abstract: A machine learning model data quality improvement detection tool is provided for identifying an accurate reference group and an accurate monitored group of a machine learning model. The tool monitors a behavior of the machine learning model for a predetermined time frame. The tool compares a determined fairness metric a pre-defined fairness threshold. Responsive to the fairness metric failing to meet the pre-defined fairness threshold, the tool modifies the monitored group to include a first portion of the reference group. The tool compares a newly determined fairness metric to the pre-defined fairness threshold. Responsive to the newly determined fairness metric meeting the pre-defined fairness threshold, the tool identifies the modified monitored group including the first portion of the user-defined reference group as a new monitored group and the modified reference group without the first portion of the user-defined reference group as a new reference group.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: June 24, 2025
    Assignee: International Business Machines Corporation
    Inventors: Ravi Chandra Chamarthy, Manish Anand Bhide, Madhavi Katari, Arunkumar Kalpathi Suryanarayanan
  • Publication number: 20250199337
    Abstract: The present disclosure relates to means of managing eye-length disorders, like myopia. The invention includes an apparatus and methods for the prescription, selection, supply and fitting of sets, stocks, or kits of pairs of myopia management spectacles, or spectacle fronts, attachable impermanent auxiliary optical films, or mini optical elements, used in conjunction with standard single vision spectacles, said auxiliary optical films, or optical elements possess one or more meridionally and azimuthally variant power distributions resulting in a delta power and said power distributions are devoid of mirror symmetry, wherein the apparatus and methods are configured to provide a conoid of partial blur, or at least one regional conoid of partial blur, at the retina of the myopic eye to decelerate, ameliorate, control, inhibit, or reduce the rate of myopia progression over time, wherein the method is a prescribed care regimen providing temporal and spatial variation to the directional optical cues or stop signals.
    Type: Application
    Filed: February 28, 2025
    Publication date: June 19, 2025
    Inventor: Ravi Chandra Bakaraju
  • Patent number: 12321046
    Abstract: The present disclosure is directed to devices and/or systems of modifying the incoming light through spectacle lenses that utilise at least one auxiliary or regional optical element, to provide extension or elongation of the depth of focus for a myopic eye. The disclosure relates to methods of correcting myopia and controlling or reducing the rate of myopia progression utilising extension of the depth of focus provided by the at least one auxiliary or regional optical element configured within, or in conjunction, combination, or juxtaposition with spectacle lenses. This disclosure relates to the use of an axicon, a light sword element, or a peacock eye element within the regional optical element or a sub-lens. This disclosure also relates to the use of a plurality of axicons, light sword elements or peacock eye elements configured within, or in conjunction, combination, or juxtaposition with spectacle lenses.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: June 3, 2025
    Assignees: NTHALMIC HOLDING PTY LTD, BRIGHTEN OPTIX CORP, LTD., SHANGHAI ISPARX MEDICAL CO., LTD
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann
  • Patent number: 12298605
    Abstract: The present disclosure is directed to lenses, devices, methods and/or systems for addressing refractive error. Certain embodiments are directed to changing or controlling the wavefront of the light entering a human eye. The lenses, devices, methods and/or systems can be used for correcting, addressing, mitigating or treating refractive errors and provide excellent vision at distances encompassing far to near without significant ghosting. The refractive error may for example arise from myopia, hyperopia, or presbyopia with or without astigmatism. Certain disclosed embodiments of lenses, devices and/or methods include embodiments that address foveal and/or peripheral vision. Exemplary of lenses in the fields of certain embodiments include contact lenses, corneal onlays, corneal inlays, and lenses for intraocular devices both anterior and posterior chamber, accommodating intraocular lenses, electro-active spectacle lenses and/or refractive surgery.
    Type: Grant
    Filed: September 26, 2023
    Date of Patent: May 13, 2025
    Assignee: Brien Holden Vision Institute Limited
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Arthur Ho, Brien Anthony Holden
  • Publication number: 20250110355
    Abstract: The present disclosure is directed generally to a lens that provides a stop signal to a myopic eye, over a substantial portion of the spectacle lens that the viewer is using. The present disclosure is directed to devices, methods and/or systems of imposing a stop signal to eye growth, using a spectacle lens in conjunction with a micro lenslet array. The present disclosure is also directed to devices, methods and/or systems of modifying incoming light through spectacle lenses that utilizes chromatic cues to decelerate the rate of myopia progression. The present disclosure is directed to devices, methods and/or systems of imposing a stop signal to eye growth, using a spectacle lens in conjunction with a refractive optical element and/or diffractive optical element that offer conflicting or contradictory optical signals at a wavelength between 510 nm and 610 nm.
    Type: Application
    Filed: July 9, 2024
    Publication date: April 3, 2025
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Cathleen Fedtke, Padmaja Sankaridurg, Arthur Ho
  • Patent number: 12265284
    Abstract: The present disclosure relates to means of managing eye-length disorders, like myopia. The invention includes an apparatus and methods for the prescription, selection, supply and fitting of sets, stocks, or kits of pairs of myopia management spectacles, or spectacle fronts, attachable impermanent auxiliary optical films, or mini optical elements, used in conjunction with standard single vision spectacles, said auxiliary optical films, or optical elements possess one or more meridionally and azimuthally variant power distributions resulting in a delta power and said power distributions are devoid of mirror symmetry, wherein the apparatus and methods are configured to provide a conoid of partial blur, or at least one regional conoid of partial blur, at the retina of the myopic eye to decelerate, ameliorate, control, inhibit, or reduce the rate of myopia progression over time, wherein the method is a prescribed care regimen providing temporal and spatial variation to the directional optical cues or stop signals.
    Type: Grant
    Filed: February 6, 2021
    Date of Patent: April 1, 2025
    Assignees: Nthalmic Holding Pty Ltd, Zhong Jing Wei Shi (Suzhou) Optical Technology Ltd
    Inventor: Ravi Chandra Bakaraju
  • Patent number: 12241628
    Abstract: A swirler assembly for a combustor includes at least one swirler including a plurality of swirl vanes arrayed about an axis of the swirler. The plurality of swirl vanes includes a first ring of first sub-vanes and a second ring of second sub-vanes, the first ring of first sub-vanes and the second ring of second sub-vanes being separated by a gap therebetween.
    Type: Grant
    Filed: September 1, 2023
    Date of Patent: March 4, 2025
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Gurunath Gandikota, Karthikeyan Sampath, Perumallu Vukanti, Allen M. Danis, Scott M. Bush, Steven Clayton Vise, Hari Ravi Chandra, Rimple Rangrej, Saket Singh, Pradeep Naik, Neeraj Kumar Mishra, Arvind Kumar Rao, Balasubramaniam Venkatanarayanan, Ranjeet Kumar Mishra
  • Patent number: 12236182
    Abstract: A user experience repository may contain base layouts and variant metadata for applications of an enterprise. An application design platform may receive, from a designer, an indication of a selected base layout for a selected application and interact with the designer to create a user experience variant (e.g., a page layout). The designer may then define an assignment rule for the user experience variant, the assignment rule including custom logic and multiple user parameters (e.g., a user role, country, language, etc.), and the system may store information about the user experience variant and assignment rule. An enterprise application service platform may determine that a user is accessing the selected application and evaluate the custom logic of the assignment rule based on user parameters of the user accessing the selected application. In accordance with the evaluation, the system may arrange to provide the appropriate user experience variant to the user.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: February 25, 2025
    Assignee: SAP SE
    Inventors: Pradeep Kumar Singh, Adithya Uday, Sreekanth K, Jens Rohde, Ravi Chandra Chandra Kss, Anilkumar Bairi
  • Publication number: 20250035962
    Abstract: The present disclosure related to means of managing eye-length disorders, like myopia. The invention includes an apparatus and methods for the prescription selection, supply and fitting of sets, stocks, or kits of pairs of myopia management spectacles, or spectacle fronts, attachable impermanent auxiliary optical films or mini optical elements used in conjunction with standard single vision spectacles, wherein the apparatus and methods are configured to provide substantially toric, or astigmatic, or asymmetric, directional optical cues to decelerate, ameliorate, control, inhibit, or reduce the rate of myopia progression over time, wherein the method is a prescribed care regimen providing temporal and spatial variation of the directional optical cues or stop signals.
    Type: Application
    Filed: October 15, 2024
    Publication date: January 30, 2025
    Inventor: Ravi Chandra Bakaraju
  • Patent number: 12165671
    Abstract: Techniques for performing conversation recovery of a system/user exchange are described. In response to determining that an action responsive to a user input cannot be performed, a system may determine a topic to recommend to a user. The topic may be unrelated to the original substance of the user input. The system may have access to various data representing a context in which a user provides an input to the system. The system may use these inputs and various data at runtime to make a determination regarding whether a user should be recommended a topic, as well as what that topic should be. The system may cause a question be output to the user, with the question asking the user about the topic, for example whether the user would like a song played, whether the user would like to hear information about a particular individual (e.g., artist), whether the user would like to know about a particular skill (e.g.
    Type: Grant
    Filed: November 13, 2023
    Date of Patent: December 10, 2024
    Assignee: Amazon Technologies
    Inventors: Gregory Newell, Eliav Kahan, Ravi Chandra Reddy Yasa, David Suarez, Joel Toledano
  • Patent number: 12153289
    Abstract: The present disclosure relates to means of managing eye-length disorders, like myopia. The invention includes an apparatus and methods for the prescription, selection, supply and fitting of sets, stocks, or kits of pairs of myopia management spectacles, or spectacle fronts, attachable impermanent auxiliary optical films or mini optical elements used in conjunction with standard single vision spectacles, wherein the apparatus and methods are configured to provide substantially toric, or astigmatic, or asymmetric, directional optical cues to decelerate, ameliorate, control, inhibit, or reduce the rate of myopia progression over time, wherein the method is a prescribed care regimen providing temporal and spatial variation to the directional optical cues or stop signals.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: November 26, 2024
    Assignees: NTHALMIC HOLDING PTY LTD, Zhong Jing Wei Shi (Suzhou) Optical Technology Ltd
    Inventor: Ravi Chandra Bakaraju
  • Patent number: 12130721
    Abstract: A computer-implemented method includes: receiving, by a computing device and from a user device, a request to validate an application program interface (API); validating, by the computing device, the API by performing a fetch analysis using different user profiles; returning, by the computing device and to the user device, a result of the fetch analysis; validating, by the computing device, the API by performing an insert/update analysis using the different user profiles; and returning, by the computing device and to the user device, a result of the insert/update analysis.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: October 29, 2024
    Assignee: International Business Machines Corporation
    Inventors: Manish Anand Bhide, Remus Lazar, Ravi Chandra Chamarthy
  • Publication number: 20240331032
    Abstract: An example system creates a video based on a user's financial profile for a specified time period and displays the video on a virtual reality device to help the user visualize the user's financial decisions resulting in the user's current financial status as well as visualize the user's predicted financial status in the future. The system analyzes the user's historical financial transactional data, profile information and relevant market and peer information to extract and predict one or more data points regarding the user's financial profile from the past, present and the future. The system generates a video about the user's financial profile by creating a storyline based on the one or more data points.
    Type: Application
    Filed: June 13, 2024
    Publication date: October 3, 2024
    Inventors: Jaison Prabhu Doss, Naveen Hunsur Jayaramegowda, Sadananda Kalappanahally Nagarajappa, Venkata Reddy Yeruva, Gowtham Reddyvari, Ravi Chandra Singamsetty
  • Patent number: 12102963
    Abstract: A high salinity feed water such as seawater is treated to produce a reverse osmosis (RO) concentrate and an RO permeate. Optionally, some or all of the RO concentrate may be filtered to produce a nanofiltration (NF) permeate. Optionally, some feed water can also be filtered to produce NF permeate without first being concentrated by RO treatment. The NF permeate, or a blend of the RO permeate and NF permeate, may be used to produce a product water for injection into an oil-bearing reservoir to enhance oil recovery. Optionally, the product water may have salinity greater than the feedwater, or at least 30 g/L. The product water may have hardness of less than 20 mg/L.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: October 1, 2024
    Assignee: BL TECHNOLOGIES, INC.
    Inventors: Nick Antonopoulos, Michael Doupe, Tamizh Aruvi Kanagasabai, Ravi Chandra Reddy Kapa, Irving Elyanow
  • Patent number: 12080281
    Abstract: Exemplary embodiments relate to a system for recovering a conversation between a user and the system when the system is unable to properly respond to a user's input. The system may process the user input and determine an error condition exists. The system may query one or more storage systems to identify candidate text data based on their semantic similarity to the user input. The storage systems may store data related to past frequently entered inputs and/or user-generated inputs. Alternative text data is selected from the candidate text data, and presented to the user for confirmation.
    Type: Grant
    Filed: January 27, 2023
    Date of Patent: September 3, 2024
    Assignee: Amazon Technologies, Inc.
    Inventors: Ravi Chandra Reddy Yasa, Sai Rahul Reddy Pulikunta, Eliav Kahan, Gregory Newell