Patents by Inventor Rajkumar PERUMAL

Rajkumar PERUMAL 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: 12074526
    Abstract: A holdup energy arrangement can include a motor control module configured to connect to motor power electronics to operate an inverter to control a motor. The motor control module can operate at a lower voltage than the motor power electronics. The arrangement can include a power supply operatively connected to the motor control module and configured to provide power the motor control module and a converter operatively connected to the power supply and configured to be electrically connected to a DC link capacitor of the motor power electronics. The arrangement can also include a logic control module configured to control the converter to selectively allow energy to flow from the DC link capacitor, through the converter, and to the power supply to provide holdup energy to the power supply with energy from the DC link capacitor.
    Type: Grant
    Filed: August 10, 2022
    Date of Patent: August 27, 2024
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Nageswara Rao Kalluri, Sridhar Katakam, Surendra Somasekhar Valleru, Rajkumar Perumal, Pravinsharma Kaliyannan Eswaran
  • Publication number: 20240261201
    Abstract: The present invention relates to a method of delivering high Sun Protection Factor (SPF) and UVA protection factor (UVAPF) to a topical surface of a body preferably the human body. The method more preferably provides for synergistic benefit of SPF and UVA PF over and above that which can be delivered through each of two individual steps carried out sequentially viz. washing off the skin with a specific cleansing composition followed by the step of applying a sunscreen composition on to the same skin surface. The specific cleansing composition comprises water soluble sunscreens but the leave-on composition could comprise any sunscreen.
    Type: Application
    Filed: June 1, 2022
    Publication date: August 8, 2024
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: Praful Gulab Rao LAHORKAR, Rajkumar PERUMAL, Ashish Anant VAIDYA
  • Patent number: 12055390
    Abstract: A system and method for testing a resolver circuit is provided. Aspects include a resolver circuit including an excitation signal output, a sine signal input, and a cosine signal input, a switching matrix comprising an excitation input connected to the excitation signal output, a first output connected to the sine signal input, and a second output connected to the cosine signal input, wherein the switching matrix further includes a set of switches configured to route an excitation signal from the resolver circuit to mimic a sine and cosine signal output corresponding to a specified angle for a resolver sensor, a controller configured to operate the resolver circuit to output an excitation signal, determine an angle value based on a sine signal received and a cosine signal received from the switching matrix, and compare the angle value to the specified angle to determine a fault condition in the resolver circuit.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: August 6, 2024
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Pravinsharma Kaliyannan Eswaran, Nageswara Rao Kalluri, Surendra Somasekhar Valleru, Sridhar Katakam, Rajkumar Perumal
  • Publication number: 20240161132
    Abstract: Aspects of the present disclosure involve systems, methods, devices, and the like for augmented media intelligence using Artificial Intelligence (AI), Machine Learning (ML), Natural Language Processing (NLP), data analytics and data visualization. In one embodiment, a system is introduced that can retrieve real-time data from social media platforms to perform augmented media intelligence analysis and take real time actions if necessary. In another embodiment, the augmented media intelligence is design to use the machine learning and natural language processing capabilities and social currency means for understanding an influencers reach within the augmented media intelligence system via an influencer score.
    Type: Application
    Filed: November 14, 2023
    Publication date: May 16, 2024
    Inventors: Anita P. Rao, Babji Nagireddi, Srujan Jha, Rajkumar Perumal, Lenin Kumar Babu Pothabattula
  • Publication number: 20240088891
    Abstract: A switch control system includes a first voltage source configured to output a first source voltage on a first voltage line. The system includes a first gate driver, a second gate driver, a third gate driver, and a fourth gate driver. Each of the gate drivers includes shoot through protection (STP) configured to prevent a first switch and a second switch of the system from ever both being closed at once thereby preventing shoot voltages from a DC bus to ground through the first and second switches.
    Type: Application
    Filed: July 17, 2023
    Publication date: March 14, 2024
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Nageswara Rao Kalluri, Rajkumar Perumal, Sridhar Katakam, Surendra Somasekhar Valleru, Pravinsharma Kaliyannan Eswaran
  • Patent number: 11883516
    Abstract: The invention relates to a personal cleansing composition that delivers enhanced deposition of sunscreens on to the topical surface of the body. The composition more particularly provides for such wash off compositions that ensure that the sunscreens incorporated therein are stable and due to the high deposition on to surface provide high Sun Protection Factor (SPF). This is achieved through combination of two select water-soluble sunscreens in a high surfactant containing composition.
    Type: Grant
    Filed: May 31, 2021
    Date of Patent: January 30, 2024
    Assignee: CONOPCO, INC.
    Inventors: Mohini Anand Bapat, Praful Gulab Rao Lahorkar, Rajkumar Perumal, Nikita Tomar, Ashish Anant Vaidya
  • Patent number: 11861630
    Abstract: Aspects of the present disclosure involve systems, methods, devices, and the like for augmented media intelligence using Artificial Intelligence (AI), Machine Learning (ML), Natural Language Processing (NLP), data analytics and data visualization. In one embodiment, a system is introduced that can retrieve real-time data from social media platforms to perform augmented media intelligence analysis and take real time actions if necessary. In another embodiment, the augmented media intelligence is design to use the machine learning and natural language processing capabilities and social currency means for understanding an influencers reach within the augmented media intelligence system via an influencer score.
    Type: Grant
    Filed: May 31, 2022
    Date of Patent: January 2, 2024
    Assignee: PAYPAL, INC.
    Inventors: Anita P. Rao, Babji Nagireddi, Srujan Jha, Rajkumar Perumal, Lenin Kumar Babu Pothabattula
  • Publication number: 20230341274
    Abstract: A resistance temperature detector includes a single channel analog to digital converter (ADC) comprising a first channel input and a reference voltage input. The detector also includes a resistance temperature detector (RTD) element connected to the first channel input and a current sense element in series with the RTD element. The current sense element is connected to the reference voltage input. The detector also includes a power source connected to the RTD element and a controller configured to: receive an output of the single channel ADC to determine a temperature at the RTD element. The output of the single channel ADC comprises a bit representation of a ratio between a first voltage across the RTD element and a reference voltage across the current sense element.
    Type: Application
    Filed: June 22, 2022
    Publication date: October 26, 2023
    Inventors: Rajkumar Perumal, Nageswara Rao Kalluri, Pravinsharma Kaliyannan Eswaran, Sridhar Katakam, Surendra Somasekhar Valleru
  • Publication number: 20230344426
    Abstract: A switch control system can include a voltage source configured to output a source voltage on a voltage line, and a first gate driver connected to a gate control signal line to receive a gate control signal from a controller. The first gate driver can be connected to the voltage line to receive the source voltage, and the first gate driver can be connected to a first terminal line to output a first gate voltage signal to a first terminal of a switch. The system can include an inverter connected to the gate control signal line configured to receive the gate control signal and output an inverted gate control signal. The system can include a second gate driver connected to the inverter to receive the inverted gate control signal from the inverter. The second gate driver can be connected to the voltage line to receive the source voltage, and the second gate driver can be connected to a second terminal line to output a second gate voltage signal to a second terminal of a switch.
    Type: Application
    Filed: April 17, 2023
    Publication date: October 26, 2023
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Pravinsharma Kaliyannan Eswaran, Nageswara Rao Kalluri, Surendra Somasekhar Valleru, Sridhar Katakam, Rajkumar Perumal
  • Publication number: 20230333192
    Abstract: A circuit calibration system can include a calibration voltage source, a calibration output line, and a variable voltage system connected between the calibration voltage source and the calibration output line. The variable voltage system can be configured to provide a variable calibration voltage to the calibration output line.
    Type: Application
    Filed: April 12, 2023
    Publication date: October 19, 2023
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Rajkumar Perumal, Nageswara Rao Kalluri, Sridhar Katakam, Pravinsharma Kaliyannan Eswaran, Surendra Somasekhar Valleru
  • Publication number: 20230314119
    Abstract: A system and method for testing a resolver circuit is provided. Aspects include a resolver circuit including an excitation signal output, a sine signal input, and a cosine signal input, a switching matrix comprising an excitation input connected to the excitation signal output, a first output connected to the sine signal input, and a second output connected to the cosine signal input, wherein the switching matrix further includes a set of switches configured to route an excitation signal from the resolver circuit to mimic a sine and cosine signal output corresponding to a specified angle for a resolver sensor, a controller configured to operate the resolver circuit to output an excitation signal, determine an angle value based on a sine signal received and a cosine signal received from the switching matrix, and compare the angle value to the specified angle to determine a fault condition in the resolver circuit.
    Type: Application
    Filed: May 25, 2022
    Publication date: October 5, 2023
    Inventors: Pravinsharma Kaliyannan Eswaran, Nageswara Rao Kalluri, Surendra Somasekhar Valleru, Sridhar Katakam, Rajkumar Perumal
  • Patent number: 11754420
    Abstract: System and methods for accuracy improvement of an LVDT are provided. Aspects include determining a first voltage from the first PGA and a second voltage from the second PGA, wherein the first voltage is determined from a PGA coupled to a first secondary winding, and wherein the second voltage is determined from a second PGA coupled to a second secondary winding, iteratively performing: analyzing the first voltage to determine a gain correction is needed for a first gain for the first PGA, the gain correction comprising change to the first gain, and analyzing the second voltage to determine a gain correction is needed for a second gain for the second PGA, the gain correction comprising change to the second gain, based on determining a gain correction is not needed for the first gain and the second gain, calculating a position based on the first voltage and the second voltage.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: September 12, 2023
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Nageswara Rao Kalluri, Sridhar Katakam, Somasekhar Valleru, Pravinsharma Kaliyannan Eswaran, Rajkumar Perumal
  • Publication number: 20230181440
    Abstract: The invention relates to a personal cleansing composition that delivers enhanced deposition of sunscreens on to the topical surface of the body thereby ensuring high UV protection to the surface while the skin is washed clean of undesirable oils and dirt. This is achieved through incorporation of select water-soluble sunscreens in a high surfactant containing composition. The composition comprises 3 to 80% surfactant, 0.1 to 10 wt % water soluble organic sunscreen and a cosmetically acceptable carrier. The sunscreen is disodium phenyl dibenzimidazole tetrasulfonate, terephthalylidene dicamphor sulfonic acid or a combination thereof.
    Type: Application
    Filed: June 1, 2021
    Publication date: June 15, 2023
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: Praful Gulab Rao LAHORKAR, Rajkumar PERUMAL, Ashish Anant VAIDYA
  • Publication number: 20230181439
    Abstract: The invention relates to a personal cleansing composition that delivers enhanced deposition of sunscreens on to the topical surface of the body. The composition more particularly provides for such wash off compositions that ensure that the sunscreens incorporated therein are stable and due to the high deposition on to surface provide high Sun Protection Factor (SPF). This is achieved through combination of two select water-soluble sunscreens in a high surfactant containing composition.
    Type: Application
    Filed: May 31, 2021
    Publication date: June 15, 2023
    Inventors: Mohini Anand BAPAT, Praful Gulab Rao LAHORKAR, Rajkumar PERUMAL, Nikita TOMAR, Ashish Anant VAIDYA
  • Publication number: 20230063094
    Abstract: A holdup energy arrangement can include a motor control module configured to connect to motor power electronics to operate an inverter to control a motor. The motor control module can operate at a lower voltage than the motor power electronics. The arrangement can include a power supply operatively connected to the motor control module and configured to provide power the motor control module and a converter operatively connected to the power supply and configured to be electrically connected to a DC link capacitor of the motor power electronics. The arrangement can also include a logic control module configured to control the converter to selectively allow energy to flow from the DC link capacitor, through the converter, and to the power supply to provide holdup energy to the power supply with energy from the DC link capacitor.
    Type: Application
    Filed: August 10, 2022
    Publication date: March 2, 2023
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Nageswara Rao Kalluri, Sridhar Katakam, Surendra Somasekhar Valleru, Rajkumar Perumal, Pravinsharma Kaliyannan Eswaran
  • Publication number: 20220383342
    Abstract: Aspects of the present disclosure involve systems, methods, devices, and the like for augmented media intelligence using Artificial Intelligence (AI), Machine Learning (ML), Natural Language Processing (NLP), data analytics and data visualization. In one embodiment, a system is introduced that can retrieve real-time data from social media platforms to perform augmented media intelligence analysis and take real time actions if necessary. In another embodiment, the augmented media intelligence is design to use the machine learning and natural language processing capabilities and social currency means for understanding an influencers reach within the augmented media intelligence system via an influencer score.
    Type: Application
    Filed: May 31, 2022
    Publication date: December 1, 2022
    Inventors: Anita P. Rao, Babji Nagireddi, Srujan Jha, Rajkumar Perumal, Lenin Kumar Babu Pothabattula
  • Publication number: 20220331225
    Abstract: The present invention relates to a polymer of formula I, a cosmetic composition comprising the polymer of formula I, a method of synthesizing the polymer of formula I; and use of the polymer of formula Ito provide a benefit in a photoresponsive way.
    Type: Application
    Filed: May 26, 2020
    Publication date: October 20, 2022
    Inventors: Praful Gulab Rao LAHORKAR, Shiyong LIU, Rajkumar PERUMAL, Shengyu SHI, Ashish Anant VAIDYA, Chenzhi YAO, Xiaoxia YANG
  • Publication number: 20220187103
    Abstract: System and methods for accuracy improvement of an LVDT are provided. Aspects include determining a first voltage from the first PGA and a second voltage from the second PGA, wherein the first voltage is determined from a PGA coupled to a first secondary winding, and wherein the second voltage is determined from a second PGA coupled to a second secondary winding, iteratively performing: analyzing the first voltage to determine a gain correction is needed for a first gain for the first PGA, the gain correction comprising change to the first gain, and analyzing the second voltage to determine a gain correction is needed for a second gain for the second PGA, the gain correction comprising change to the second gain, based on determining a gain correction is not needed for the first gain and the second gain, calculating a position based on the first voltage and the second voltage.
    Type: Application
    Filed: February 8, 2021
    Publication date: June 16, 2022
    Inventors: Nageswara Rao Kalluri, Sridhar Katakam, Somasekhar Valleru, Pravinsharma Kaliyannan Eswaran, Rajkumar Perumal
  • Patent number: 11348125
    Abstract: Aspects of the present disclosure involve systems, methods, devices, and the like for augmented media intelligence using Artificial Intelligence (AI), Machine Learning (ML), Natural Language Processing (NLP), data analytics and data visualization. In one embodiment, a system is introduced that can retrieve real-time data from social media platforms to perform augmented media intelligence analysis and take real time actions if necessary. In another embodiment, the augmented media intelligence is design to use the machine learning and natural language processing capabilities and social currency means for understanding an influencers reach within the augmented media intelligence system via an influencer score.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: May 31, 2022
    Assignee: PAYPAL, INC.
    Inventors: Anita P. Rao, Babji Nagireddi, Srujan Jha, Rajkumar Perumal, Lenin Kumar Babu Pothabattula
  • Publication number: 20210106509
    Abstract: The present invention relates to a sunscreen composition. Particularly, the sunscreen composition relates to providing improved ultraviolet A protection factor (UVAPF). The composition comprises UVA organic sunscreen, 2-ethylhexyl 2-cyano-3,3-diphenylacrylate, a compound selected from resorcinol, phenylethyl resorcinol, 4-alkyl substituted resorcinol and mixtures thereof, fatty acid and soap.
    Type: Application
    Filed: April 15, 2019
    Publication date: April 15, 2021
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: Rajkumar PERUMAL, Ashish Anant VAIDYA