Patents by Inventor Sanjay Krishna

Sanjay Krishna 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).

  • Publication number: 20240277587
    Abstract: The complete disclosure of all patents, patent applications, and publications, and electronically available material cited herein are incorporated by reference. The foregoing detailed description and examples have been given for clarity of understanding only. No unnecessary limitations are to be understood therefrom. The invention is not limited to the exact details shown and described, for variations obvious to one skilled in the art will be included within the invention defined by the claims.
    Type: Application
    Filed: April 15, 2024
    Publication date: August 22, 2024
    Inventors: Vijay Krishna, Sanjay Anand, Edward Maytin, Stephen Grobmyer
  • Patent number: 11976972
    Abstract: Disclosed herein are systems and devices for use in determining a level of a trait in an agriculture or food product sample. Further disclosed is a portable spectrometer system coupled with chemometric analysis methods to determine a level of a trait in an agriculture or food product sample, the portable spectrometer system comprising: a spectrometer; a sample stage adjacent the spectrometer; a motor coupled to the sample stage; and a system housing enclosing the motor and the spectrometer; wherein rotation of the motor rotates the sample stage, and wherein the motor is controllable in response to spectroscopy requirements.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: May 7, 2024
    Assignee: Ohio State Innovation Foundation
    Inventors: Luis Rodriguez-Saona, Christopher Ball, Xin Rong Sia, Sanjay Krishna, Theodore James Ronningen
  • Publication number: 20240035961
    Abstract: A system and method indicate capability for detecting methane leaks inside buildings. This approach provides the ability to detect methane behind high efficiency coated windows and can extract methane concentration (rather than concentration-path length product CL). Lock-in imaging technologies can facilitate lower laser transmitter power. A field deployable, hand held prototype sensor for use in remote sensing a appropriate standoff distances can support operational testing. Distance infrared imaging of methane is feasible. Fully characterized real time image of a methane cloud offers operational advantages in accuracy and safety as compared to current sensors.
    Type: Application
    Filed: July 31, 2023
    Publication date: February 1, 2024
    Inventors: Christopher Ball, Theodore Ronningen, Douglas Fink, Brett Ringel, Sanjay Krishna, Earl Fuller, Douglas Mooney
  • Patent number: 11714046
    Abstract: A system and method indicate capability for detecting methane leaks inside buildings. This approach provides the ability to detect methane behind high efficiency coated windows and can extract methane concentration (rather than concentration-path length product CL). Lock-in imaging technologies can facilitate lower laser transmitter power. A field deployable, hand held prototype sensor for use in remote sensing a appropriate standoff distances can support operational testing. Distance infrared imaging of methane is feasible. Fully characterized real time image of a methane cloud offers operational advantages in accuracy and safety as compared to current sensors.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: August 1, 2023
    Assignees: Ohio State Innovation Foundation, SK Infrared, LLC
    Inventors: Christopher Ball, Theodore Ronningen, Douglas Fink, Brett Ringel, Sanjay Krishna, Earl Fuller, Douglas Mooney
  • Patent number: 11552204
    Abstract: An apparatus for light detection includes a light, or photon, detector assembly and a dielectric resonator layer coupled to the detector assembly. The dielectric resonator layer is configured to receive transmission of incident light that is directed into the detector assembly by the dielectric resonator layer. The dielectric resonator layer resonates with a range of wavelengths of the incident light.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: January 10, 2023
    Assignees: Ohio State Innovation Foundation, THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Sanjay Krishna, Anthony Grbic, Christopher Ball, Theodore Ronningen, Alireza Kazemi, Mohammadamin Ranjbaraskari, Qingyuan Shu
  • Patent number: 11521994
    Abstract: An open circuit voltage photodetector comprises a photovoltaic device including a photovoltaic junction, and a transistor. The photovoltaic device is connected to the gate terminal of the transistor to input an open circuit voltage of the photovoltaic device to the gate terminal. An array of such photodetectors and a readout integrated circuit forms an image sensor. In a photodetection method, an open circuit voltage is generated in a photovoltaic device in response to illumination by incident radiation, and the open circuit voltage is applied to a gate terminal of a transistor to modulate a channel current flowing in a channel of the transistor. A readout electronic circuit may be fabricated with an extra transistor, and a photovoltaic device disposed on the readout electronic circuit and electrically connected to apply an open circuit voltage of the photovoltaic device to a gate of the extra transistor.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: December 6, 2022
    Assignee: Ohio State Innovation Foundation
    Inventors: Sanjay Krishna, Earl Fuller, Waleed Khalil, Theodore Ronningen, Alireza Kazemi, Dale Shane Smith, Teressa Specht, Ramy Tantawy
  • Patent number: 11508869
    Abstract: A lateral interband Type II engineered (LITE) detector is provided. LITE detectors use engineered heterostructures to spatially separate electrons and holes into separate layers. The device may have two configurations, a positive intrinsic (PIN) configuration and a BJT (Bipolar junction transistor) configuration. The PIN configuration may have a wide bandgap (WBG) layer that transports the holes above a narrow bandgap (NBG) absorber layer that absorbs the target radiation and transports the electrons. The BJT configuration may have a WBG layer operating as a BJT above an NBG layer. In both configurations, the LITE design uses a Type II staggered offset between the NBG layers and the WBG layers that provides a built-in field for the holes to drift from an absorber region to a transporter region.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: November 22, 2022
    Assignee: Ohio State Innovation Foundation
    Inventors: Sanjay Krishna, Sri Harsha Kodati, Theodore Ronningen, Seunghyun Lee
  • Publication number: 20220221338
    Abstract: Disclosed herein are systems and devices for use in determining a level of a trait in an agriculture or food product sample. Further disclosed is a portable spectrometer system coupled with chemometric analysis methods to determine a level of a trait in an agriculture or food product sample, the portable spectrometer system comprising: a spectrometer; a sample stage adjacent the spectrometer; a motor coupled to the sample stage; and a system housing enclosing the motor and the spectrometer; wherein rotation of the motor rotates the sample stage, and wherein the motor is controllable in response to spectroscopy requirements.
    Type: Application
    Filed: May 21, 2020
    Publication date: July 14, 2022
    Inventors: Luis RODRIGUEZ-SAONA, Christopher BALL, Xin Rong SIA, Sanjay KRISHNA, Theodore James RONNINGEN
  • Patent number: 11333707
    Abstract: Methods for testing an application specific integrated circuit (ASIC). A set of representations is created that overlays power density information and clock gate physical locations of a set of clock gates in a critical sub-chip of the ASIC for test mode power analysis. The set of representations are further grouped in the sub-chip into various groups based on overlapping of the set of representations. Then, a set of test control signals is generated corresponding to each of the set of clock gates during at-speed test mode of operation such that each clock gate with overlapping representations receive different test control signals. Further, patterns are generated using a virtual constraint function to selectively enable the set of test control signals such that the set of test control signals are not activated simultaneously.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: May 17, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Khushboo Agarwal, Sanjay Krishna Hulical Vijayaraghavachar, Raashid Moin Shaikh, Srivaths Ravi, Wilson Pradeep, Rajesh Kumar Tiwari
  • Publication number: 20210375957
    Abstract: An open circuit voltage photodetector comprises a photovoltaic device including a photovoltaic junction, and a transistor. The photovoltaic device is connected to the gate terminal of the transistor to input an open circuit voltage of the photovoltaic device to the gate terminal. An array of such photodetectors and a readout integrated circuit forms an image sensor. In a photodetection method, an open circuit voltage is generated in a photovoltaic device in response to illumination by incident radiation, and the open circuit voltage is applied to a gate terminal of a transistor to modulate a channel current flowing in a channel of the transistor. A readout electronic circuit may be fabricated with an extra transistor, and a photovoltaic device disposed on the readout electronic circuit and electrically connected to apply an open circuit voltage of the photovoltaic device to a gate of the extra transistor.
    Type: Application
    Filed: December 5, 2018
    Publication date: December 2, 2021
    Applicant: OHIO STATE INNOVATION FOUNDATION
    Inventors: Sanjay Krishna, Earl Fuller, Waleed Khalil, Theodore RONNINGEN, Alireza Kazemi, Dale Shane Smith, Teressa Specht, Ramy Tantawy
  • Publication number: 20210043791
    Abstract: A lateral interband Type II engineered (LITE) detector is provided. LITE detectors use engineered heterostructures to spatially separate electrons and holes into separate layers. The device may have two configurations, a positive intrinsic (PIN) configuration and a BJT (Bipolar junction transistor) configuration. The PIN configuration may have a wide bandgap (WBG) layer that transports the holes above a narrow bandgap (NBG) absorber layer that absorbs the target radiation and transports the electrons. The BJT configuration may have a WBG layer operating as a BJT above an NBG layer. In both configurations, the LITE design uses a Type II staggered offset between the NBG layers and the WBG layers that provides a built-in field for the holes to drift from an absorber region to a transporter region.
    Type: Application
    Filed: August 6, 2020
    Publication date: February 11, 2021
    Inventors: Sanjay Krishna, Sri Harsha Kodati, Theodore Ronningen, Seunghyun Lee
  • Publication number: 20200319096
    Abstract: A system and method indicate capability for detecting methane leaks inside buildings. This approach provides the ability to detect methane behind high efficiency coated windows and can extract methane concentration (rather than CL). Lock-in imaging technologies can facilitate lower laser transmitter power. A field deployable, hand held prototype sensor for use in remote sensing a appropriate standoff distances can support operational testing. Distance infrared imaging of methane is feasible.
    Type: Application
    Filed: April 6, 2020
    Publication date: October 8, 2020
    Inventors: Christopher Ball, Theodore Ronningen, Douglas Fink, Brett Ringel, Sanjay Krishna, Earl Fuller, Douglas Mooney
  • Publication number: 20200321481
    Abstract: An apparatus for light detection includes a light, or photon, detector assembly and a dielectric resonator layer coupled to the detector assembly. The dielectric resonator layer is configured to receive transmission of incident light that is directed into the detector assembly by the dielectric resonator layer. The dielectric resonator layer resonates with a range of wavelengths of the incident light.
    Type: Application
    Filed: February 3, 2020
    Publication date: October 8, 2020
    Inventors: Sanjay Krishna, Anthony Grbic, Christopher Ball, Theodore Ronningen, Alireza Kazemi, Amin Ranjbar, Qingyuan Shu
  • Patent number: 10798242
    Abstract: Devices, computer-readable media and methods for delivering customer service content associated with a reason code are disclosed. Examples of the present disclosure may include a processor of a telecommunication network identifying a reason code associated with calls from customers to a customer call center and determining a set of shared traits among the customers. The shared traits may be based upon first network event data and first customer account data associated with the customers. The processor may further determine a customer with a propensity to call score that exceeds a threshold and with a customer profile that matches the set of shared traits. The customer profile may be based upon second network event data and second customer account data associated with the customer. The processor may further deliver a customer service content associated with the reason code to the customer via a communication modality that is determined for the customer.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: October 6, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: David Dunmire, Sanjay Krishna, Don Green, John Roberts, Anna Aspley
  • Patent number: 10699703
    Abstract: Aspects of the subject disclosure may include an artificial intelligence method of routing customer service interactions which begins with an analysis of a body of historical interactions with customers. By monitoring an interaction between a user and an agent, the user's issue may be determined and a potential resolution resource may be identified. By monitoring an exchange between the user and the resource, the analysis may be updated. Other embodiments are disclosed.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: June 30, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Don Green, Mazin E. Gilbert, David Kapilow, Kelley Mantione, Sanjay Krishna, Wen-Ling Hsu, Cheryl Brooks, Christopher Rath, Tan Xu
  • Publication number: 20200132763
    Abstract: Methods for testing an application specific integrated circuit (ASIC). A set of representations is created that overlays power density information and clock gate physical locations of a set of clock gates in a critical sub-chip of the ASIC for test mode power analysis. The set of representations are further grouped in the sub-chip into various groups based on overlapping of the set of representations. Then, a set of test control signals is generated corresponding to each of the set of clock gates during at-speed test mode of operation such that each clock gate with overlapping representations receive different test control signals. Further, patterns are generated using a virtual constraint function to selectively enable the set of test control signals such that the set of test control signals are not activated simultaneously.
    Type: Application
    Filed: December 5, 2019
    Publication date: April 30, 2020
    Applicant: Texas Instruments Incorporated
    Inventors: Khushboo Agarwal, Sanjay Krishna Hulical Vijayaraghavachar, Raashid Moin Shaikh, Srivaths Ravi, Wilson Pradeep, Rajesh Kumar Tiwari
  • Publication number: 20190394332
    Abstract: Devices, computer-readable media and methods for delivering customer service content associated with a reason code are disclosed. Examples of the present disclosure may include a processor of a telecommunication network identifying a reason code associated with calls from customers to a customer call center and determining a set of shared traits among the customers. The shared traits may be based upon first network event data and first customer account data associated with the customers. The processor may further determine a customer with a propensity to call score that exceeds a threshold and with a customer profile that matches the set of shared traits. The customer profile may be based upon second network event data and second customer account data associated with the customer. The processor may further deliver a customer service content associated with the reason code to the customer via a communication modality that is determined for the customer.
    Type: Application
    Filed: September 9, 2019
    Publication date: December 26, 2019
    Inventors: David Dunmire, Sanjay Krishna, Don Green, John Roberts, Anna Aspley
  • Publication number: 20190287517
    Abstract: Aspects of the subject disclosure may include an artificial intelligence method of routing customer service interactions which begins with an analysis of a body of historical interactions with customers. By monitoring an interaction between a user and an agent, the user's issue may be determined and a potential resolution resource may be identified. By monitoring an exchange between the user and the resource, the analysis may be updated. Other embodiments are disclosed.
    Type: Application
    Filed: March 19, 2018
    Publication date: September 19, 2019
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Don Green, Mazin E. Gilbert, David Kapilow, Kelley Mantione, Sanjay Krishna, Wen-Ling Hsu, Cheryl Brooks, Christopher Rath, Tan Xu
  • Patent number: 10412218
    Abstract: Devices, computer-readable media and methods for delivering customer service content associated with a reason code are disclosed. Examples of the present disclosure may include a processor of a telecommunication network identifying a reason code associated with calls from customers to a customer call center and determining a set of shared traits among the customers. The shared traits may be based upon first network event data and first customer account data associated with the customers. The processor may further determine a customer with a propensity to call score that exceeds a threshold and with a customer profile that matches the set of shared traits. The customer profile may be based upon second network event data and second customer account data associated with the customer. The processor may further deliver a customer service content associated with the reason code to the customer via a communication modality that is determined for the customer.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: September 10, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: David Dunmire, Sanjay Krishna, Don Green, John Roberts, Anna Aspley
  • Patent number: 10411436
    Abstract: A tunable laser device includes a laser structure and a plurality of individually addressable, separated contact stripes disposed on the laser structure. The laser structure includes a substrate, an active portion disposed on the substrate, and a chirped distributed feedback (DFB) grating disposed on the active portion. The active portion includes at least top and bottom contact layers and a gain medium.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: September 10, 2019
    Inventors: Steven R. J. Brueck, Sanjay Krishna, Daniel P. Dapkus