Patents by Inventor Amit Dixit

Amit Dixit 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: 20240384025
    Abstract: A thermally curable epoxy system includes 94 to 99.98 wt % of an epoxide component, 0.01 to 5% wt% of a toughener, 0.005 to 1.5 wt % of a catalyst, and 0.005 to 1.5 wt % of a co-catalyst.
    Type: Application
    Filed: May 31, 2022
    Publication date: November 21, 2024
    Inventors: Pradip Kumar DUBEY, Amit DIXIT, Sirirat CHANGMONGKOL, Atchara CHADSIRIWATTANA, Sarun RUNGRUANGSUPARAT
  • Patent number: 12119769
    Abstract: The present invention relates to a method (200) and system (100) for controlling a rotary electric machine wherein a state of the rotary electric machine is determined between a low speed state and a high speed state. In the low speed state, a first rotor position (P1) and a first rotor speed (S1) are estimated based on intra-PWM current ripple (?X), a mean current vector (Y) and an inductance vector. A second rotor position (P2) and second rotor speed (S2) is estimated based on average current flowing through stator phase windings. State of rotary electric machine is selected based on estimated first rotor speed (S1) and/or estimated second rotor speed (S2). At low speed state, PWM signals are updated based on estimated first rotor position (P1), and at high speed state, PWM signals are updated based on estimated second rotor position (P2).
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: October 15, 2024
    Assignee: SEDEMAC MECHATRONICS PVT LTD
    Inventors: Anaykumar Joshi, Amit Dixit
  • Publication number: 20240277726
    Abstract: The present invention relates to novel pharmaceutical composition comprising meloxicam for the treatment of acute pain, wherein the composition comprises at least a hydrophilic polymer and one or more alkalizing agents or combinations thereof.
    Type: Application
    Filed: November 3, 2021
    Publication date: August 22, 2024
    Inventors: Pankaj Devidas Patil, Vivekanand Khyamgonde, Ritesh Kakaria, Ashish Jaiswal, Akhilesh Dixit, Santanu Chakraborty, Amit Antarkar, Abhijit Deshmukh, Jeffrey P. Smith
  • Patent number: 12015315
    Abstract: An Integrated Starter Generator system (100) comprising a battery (110) and a three-phase brushless DC electric machine (130). The electric machine (130) has a stator (132) with 3n stator teeth (132?), ‘n’ being a natural number, and each stator tooth (132?) has a coil corresponding to one of the three phases. The electric machine (130) further has a rotor (134) with 4n rotor poles (134?) facing the stator (132), and magnets on the rotor poles (134?) are disposed with an alternating sequence of magnet polarity facing the stator (132). Herein, back-emf constant of the electric machine (130) is substantially between 25% of a nominal battery voltage and 75% of the nominal battery voltage.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: June 18, 2024
    Assignee: SEDEMAC MECHATRONICS PVT LTD
    Inventors: Amit Dixit, Anaykumar Joshi
  • Publication number: 20230295414
    Abstract: A slow reacting recyclable epoxy resin system for structural composites is disclosed. The slow reacting recyclable epoxy resin system comprises an epoxy resin component comprising a high purity epoxy resin selected from a high purity Bisphenol A (BPA) epoxy resin, a high purity Bisphenol F (BPF) epoxy resin and a combination thereof wherein the high purity epoxy resin is in a range of 20 to 95 wt. % of the total weight of the epoxy resin component, a standard epoxy resin selected from a standard bisphenol A (BPA) epoxy resin, a standard Bisphenol F (BPF) epoxy resin and a combination thereof wherein the standard epoxy resin is in a range of 1 to 50 wt. % of the total weight of the epoxy resin component; and a curing agent component comprising a curing agent having at least one cleavage linkage selected from a group comprising of an acetal linkage, a ketal linkage, a formal linkage, an orthoester linkage or a siloxy linkage.
    Type: Application
    Filed: January 5, 2021
    Publication date: September 21, 2023
    Inventors: Pradip Kumar Dubey, Amit Dixit, Sirirat Changmongkol, Kanchana Inchamnan, Wasinee Sakathok
  • Publication number: 20230268864
    Abstract: The present invention relates to a method (200) and system (100) for controlling a rotary electric machine wherein a state of the rotary electric machine is determined between a low speed state and a high speed state. In the low speed state, a first rotor position (P1) and a first rotor speed (S1) are estimated based on intra-PWM current ripple (?X), a mean current vector (Y) and an inductance vector. A second rotor position (P2) and second rotor speed (S2) is estimated based on average current flowing through stator phase windings. State of rotary electric machine is selected based on estimated first rotor speed (S1) and/or estimated second rotor speed (S2). At low speed state, PWM signals are updated based on estimated first rotor position (P1), and at high speed state, PWM signals are updated based on estimated second rotor position (P2).
    Type: Application
    Filed: May 21, 2021
    Publication date: August 24, 2023
    Inventors: Anaykumar JOSHI, Amit DIXIT
  • Publication number: 20230204006
    Abstract: An Integrated Starter Generator System The present invention relates to an Integrated Starter Generator system (100) comprising a battery (110) and a three-phase brushless DC electric machine (130). The electric machine (130) has a stator (132) with 3n stator teeth (132?), ‘n’ being a natural number, and each stator tooth (132?) has a coil corresponding to one of the three phases. The electric machine (130) further has a rotor (134) with 4n rotor poles (134?) facing the stator (132), and magnets on the rotor poles (134?) are disposed with an alternating sequence of magnet polarity facing the stator (132). Herein, back-emf constant of the electric machine (130) is substantially between 25% of a nominal battery voltage and 75% of the nominal battery voltage.
    Type: Application
    Filed: May 28, 2021
    Publication date: June 29, 2023
    Inventors: Amit DIXIT, Anaykumar JOSHI
  • Publication number: 20230208263
    Abstract: An Integrated Starter Generator System The present invention relates to an Integrated Starter Generator system (100) comprising a battery (110) and a three-phase brushless DC electric machine (130). The electric machine (130) has a stator (132) with 6n stator teeth (132?), ‘n’ being a natural number, and each stator tooth (132?) has a coil corresponding to one of the three phases. The electric machine (130) further has a rotor (134) with 6n±2 rotor poles (134?) facing the stator, and magnets on the rotor poles (134?) are disposed with an alternating sequence of magnet polarity facing the stator (132).
    Type: Application
    Filed: May 28, 2021
    Publication date: June 29, 2023
    Inventors: Amit DIXIT, Anaykumar JOSHI
  • Patent number: 11332571
    Abstract: A slow reacting epoxy resin system is disclosed. The slow reacting epoxy resin system comprises a high purity epoxy resin component selected from the group comprising of a high purity Bisphenol A(BPA), a high purity Bisphenol F (BPF), and a combination thereof, and an amine curing agent. The initial viscosity after mixing the high purity epoxy resin component and the amine curing agent is less than 350 mPa·s at 25° C.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: May 17, 2022
    Assignee: ADITYA BIRLA CHEMICALS (THAILAND) LTD.
    Inventors: Pradip Kumar Dubey, Amit Dixit, Sirirat Changmongkol, Kanchana Inchamnan, Wasinee Sakathok
  • Patent number: 11190118
    Abstract: A system for controlling electrical power generated by a permanent magnet machine coupled to an internal combustion engine includes a central processing unit configured to determine speed of the machine, and compare the machine speed with a predetermined range of machine speeds, a series power switching circuit connected between the machine and a battery, a bus decoupling power switch connected between a voltage bus and the battery, and a bridge switching circuit connected between the voltage bus and the machine and configured to amplify voltage generated by the machine if the machine speed is less than a predetermined value or fall within a predetermined range thereby charging the battery with amplified voltage even at lower machine speeds. The central processing unit selectively connects the bridge switching circuit with the battery by actuating the bus decoupling switch and/or the series power switching circuit depending upon the machine speed.
    Type: Grant
    Filed: November 23, 2017
    Date of Patent: November 30, 2021
    Assignee: SEDEMAC MECHATRONICS PVT LTD
    Inventors: Amit Dixit, Arvind Athavale, Anaykumar Joshi
  • Publication number: 20210297021
    Abstract: A system for controlling electrical power generated by a permanent magnet machine coupled to an internal combustion engine includes a central processing unit configured to determine speed of the machine, and compare the machine speed with a predetermined range of machine speeds, a series power switching circuit connected between the machine and a battery, a bus decoupling power switch connected between a voltage bus and the battery, and a bridge switching circuit connected between the voltage bus and the machine and configured to amplify voltage generated by the machine if the machine speed is less than a predetermined value or fall within a predetermined range thereby charging the battery with amplified voltage even at lower machine speed. The central processing unit selectively connects the bridge switching circuit with the battery by actuating the bus decoupling switch and/or the series power switching circuit depending upon the machine speed.
    Type: Application
    Filed: November 23, 2017
    Publication date: September 23, 2021
    Inventors: Amit DIXIT, Arvind ATHAVALE, Anaykumar JOSHI
  • Publication number: 20210070924
    Abstract: A slow reacting epoxy resin system is disclosed. The slow reacting epoxy resin system comprises a high purity epoxy resin component selected from the group comprising of a high purity Bisphenol A(BPA), a high purity Bisphenol F (BPF), and a combination thereof, and an amine curing agent. The initial viscosity after mixing the high purity epoxy resin component and the amine curing agent is less than 350 mPa·s at 25° C.
    Type: Application
    Filed: September 14, 2018
    Publication date: March 11, 2021
    Inventors: Pradip Kumar Dubey, Amit Dixit, Sirirat Changmongkol, Kanchana Inchan0mnan, Wasinee Sakathok
  • Patent number: 10637867
    Abstract: Embodiments of the present invention provide a system for dynamic role-based evaluation of access permissions. The system is configured to generate a database comprising a plurality of job roles and associated access permissions. A job role of a particular user is identified from the database by the system, and the job role is matched to a set of access permissions based on a comparison of the user's job role to the database. The user is authorized for the set of access permissions and generally does not authorize the user for any other access permissions. The system may compile a compliance database comprising the plurality of access permissions and compliance criteria associated with each access permission. When the system receives a user request for accessing an outlier access permission, the system determines whether the user meets the compliance criteria of that outlier access permission before authorizing the outlier access permission.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: April 28, 2020
    Assignee: Bank of America Corporation
    Inventors: Christopher Lamont Rice, Amit Dixit, Neetu Chadha, Aditya Vyas
  • Publication number: 20190230088
    Abstract: Embodiments of the present invention provide a system for dynamic role-based evaluation of access permissions. The system is configured to generate a database comprising a plurality of job roles and associated access permissions. A job role of a particular user is identified from the database by the system, and the job role is matched to a set of access permissions based on a comparison of the user's job role to the database. The user is authorized for the set of access permissions and generally does not authorize the user for any other access permissions. The system may compile a compliance database comprising the plurality of access permissions and compliance criteria associated with each access permission. When the system receives a user request for accessing an outlier access permission, the system determines whether the user meets the compliance criteria of that outlier access permission before authorizing the outlier access permission.
    Type: Application
    Filed: January 19, 2018
    Publication date: July 25, 2019
    Inventors: Christopher Lamont Rice, Amit Dixit, Neetu Chadha, Aditya Vyas
  • Patent number: 10221276
    Abstract: A self-healing hydrophobic epoxy resin composition is provided. The self-healing epoxy resin composition comprises an epoxy resin component and a hardener component, the hardener component comprises at least 0.1 weight % of a modified epoxy resin hardener. The modified epoxy resin hardener is a reaction product of an amino modified oligomericsiloxane and a carboxylic acid anhydride. A process for preparing the modified epoxy resin hardener is also disclosed.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: March 5, 2019
    Assignee: Aditya Birla Chemicals (Thailand) Ltd.
    Inventors: Pradip Kumar Dubey, Amit Dixit, Pankaj Verma
  • Publication number: 20160229950
    Abstract: A self-healing hydrophobic epoxy resin composition is provided. The self-healing epoxy resin composition comprises an epoxy resin component and a hardener component, the hardener component comprises at least 0.1 weight % of a modified epoxy resin hardener. The modified epoxy resin hardener is a reaction product of an amino modified oligomericsiloxane and a carboxylic acid anhydride. A process for preparing the modified epoxy resin hardener is also disclosed.
    Type: Application
    Filed: September 26, 2014
    Publication date: August 11, 2016
    Applicant: ADITYA BIRLA CHEMICALS (THAILAND) LTD.
    Inventors: Pradip Kumar Dubey, Amit Dixit, Pankaj Verma
  • Patent number: 9176728
    Abstract: Embodiments of the invention relate to systems, methods, and computer program products for an automated infrastructure management and remediation in an enterprise-type computing infrastructure that provides for automated deployment of critical updates/patches to enterprise-wide computing servers to insure that such updates occur and within prescribed time limits. Further, the invention provides for automatic extraction data from the various different data sources that contain data relevant to the update/patch process, consolidation and transformation of the data to accommodate reporting needs and analytical research and relying on the data to automatically determine the current state of the servers for the subsequent purpose of determining which of enterprise-wide servers require a pending update/patch.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: November 3, 2015
    Assignee: Bank of America Corporation
    Inventors: Amit Dixit, Syed Luqman Ahmed, Nandakumar Malireddy
  • Patent number: 8262955
    Abstract: A process for making epoxy resin foam blocks of varying density comprising mixing together (i) a foam resin comprising: a first epoxy resin, a foaming agent to the extent of 2% to 10% of the mass of the epoxy resin, a surfactant to the extent of 2% to 6% of the mass of the epoxy resin, a filler, a toughening agent and (ii) a curing agent comprising: a hardener and a second epoxy resin, the ratio of the foam resin to curing agent being in the range of about 100:20 to 100:25 by mass to form a reaction mixture; pouring the reaction mixture inside a mold maintained at a temperature in the range of 70° to 80° C. and allowing the mixture to cure in the mold for 60 to 100 min.; allowing the mold to cool at a temperature in the range of 15° C. to 30° C. and demolding to obtain a green block; and post-curing the green block in an air circulatory oven for 10 to 15 hrs to obtain a final hard foam block.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: September 11, 2012
    Assignee: Aditya Birla Chemical (Thailand) Ltd.
    Inventors: Amit Dixit, Pradip Kumar Dubey, Tatiya Laksanangam
  • Patent number: 8231820
    Abstract: A process for making a molded composite comprising the following steps: reacting a reaction mass containing a polyepoxide, in the proportion of about 20% to 50% with respect to the reaction mass, a diol, in the proportion of about 10% to 20% with respect to the reaction mass, a hardener, in the proportion of about 20% to 50% with respect to the reaction mass, in the presence of an accelerator in the proportion of about 0.5 to 10.0% with respect to the reaction mass either alone or in solution with compatible diluents, to obtain an epoxy resin mix having intrinsic viscosity in the range of 100 to 850 cPs, pouring the resin mix in a mold having an in-situ glass fiber scaffold at a mold temperature in the range of 45 to 50 C. and applying pressure to the resin mix in the mold to form a compressed green composition: partially curing the compressed green composition at a temperature in the range of 60 to 80 C.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: July 31, 2012
    Assignee: Aditya Birla Chemicals (Thailand) Ltd.
    Inventors: Amit Dixit, Pradip Kumar Dubey, Thitikan Prommaneewat
  • Publication number: 20110042843
    Abstract: A process for making epoxy resin foam blocks of varying density comprising mixing together (i) a foam resin comprising: a first epoxy resin, a foaming agent to the extent of 2% to 10% of the mass of the epoxy resin, a surfactant to the extent of 2% to 6% of the mass of the epoxy resin, a filler, a toughening agent and (ii) a curing agent comprising: a hardener and a second epoxy resin, the ratio of the foam resin to curing agent being in the range of about 100:20 to 100:25 by mass to form a reaction mixture; pouring the reaction mixture inside a mold maintained at a temperature in the range of 70° to 80° C. and allowing the mixture to cure in the mold for 60 to 100 min.; allowing the mold to cool at a temperature in the range of 15° C. to 30° C. and demolding to obtain a green block; and post-curing the green block in an air circulatory oven for 10 to 15 hrs to obtain a final hard foam block.
    Type: Application
    Filed: October 21, 2008
    Publication date: February 24, 2011
    Applicant: ADITYA BIRLA CHEMICALS (THAILAND) LTD.
    Inventors: Amit Dixit, Pradip Kumar Dubey, Tatiya Laksanangam