Patents by Inventor Mita Chattoraj
Mita Chattoraj 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).
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Patent number: 11953458Abstract: A method for characterizing a process fluid comprising applying electrical power to a first resistance temperature detector (RTD) in contact with a fluid to increase the temperature of the first RTD; allowing the first RTD to cool toward a fluid equilibrium temperature; analyzing the temperature decay profile of the first RTD over time to determine thermal characteristics; applying electrical power to a second RTD in contact with the fluid to increase the temperature of the second RTD; allowing the second RTD to cool toward the fluid equilibrium temperature; analyzing the temperature decay profile of the second RTD over time to determine thermal characteristics; comparing the thermal characteristics of the first and second RTD to determining one or more characteristics of the fluid based; and performing a corrective action. The first RTD has a first coating and the second RTD has a second coating different than the first coating.Type: GrantFiled: March 6, 2020Date of Patent: April 9, 2024Assignee: Ecolab USA Inc.Inventors: Mita Chattoraj, Michael J. Murcia, Alexander P. Mantis, Craig W. Myers
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Publication number: 20220099604Abstract: Fluid flow systems can include one or more resistance temperature detectors (RTDs) in contact with the fluid flowing through the system. One or more RTDs can be operated in a heating mode and a measurement mode. Thermal behavior of the one or more RTDs can be analyzed to characterize a level of deposit formed on the RTD(s) from the fluid flowing through the system. Characterizations of deposition on RTDs operated at different temperatures can be used to establish a temperature-dependent deposition profile. The deposition profile can be used to determine if depositions are likely to form at certain locations in the fluid flow system, such as at a use device. Detected deposit conditions can initiate one or more corrective actions that can be taken to prevent or minimize deposit formation before deposits negatively impact operation of the fluid flow system.Type: ApplicationFiled: December 13, 2021Publication date: March 31, 2022Inventors: Mita Chattoraj, Michael J. Murcia, Aseet Mukherjee
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Patent number: 10816285Abstract: Fluid flow systems can include one or more thermoelectric devices in contact with the fluid flowing through the system. One or more thermoelectric devices can be operated in a temperature control mode and a measurement mode. Thermal behavior of the one or more thermoelectric devices can be analyzed to characterize a level of deposit formed on the thermoelectric device(s) from the fluid flowing through the system. Characterizations of deposition on thermoelectric devices operated at different temperatures can be used to establish a temperature-dependent deposition profile. The deposition profile can be used to determine if depositions are likely to form at various locations in the system, such as at a use device or in a flow vessel. Detected deposit conditions can initiate one or more corrective actions that can be taken to remove deposits, or to prevent or minimize deposit formation before deposits negatively impact operation of the system.Type: GrantFiled: February 24, 2017Date of Patent: October 27, 2020Assignee: Ecolab USA Inc.Inventors: Mita Chattoraj, Michael J. Murcia
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Patent number: 10816490Abstract: Fluid flow systems can include one or more resistance temperature detectors (RTDs) in contact with the fluid flowing through the system. One or more RTDs can be operated in a heating mode and a measurement mode. Thermal behavior of the one or more RTDs can be analyzed to characterize a level of deposit formed on the RTD(s) from the fluid flowing through the system. Characterizations of deposition on RTDs operated at different temperatures can be used to establish a temperature-dependent deposition profile. The deposition profile can be used to determine if depositions are likely to form at certain locations in the fluid flow system, such as at a use device. Detected deposit conditions can initiate one or more corrective actions that can be taken to prevent or minimize deposit formation before deposits negatively impact operation of the fluid flow system.Type: GrantFiled: April 13, 2019Date of Patent: October 27, 2020Assignee: Ecolab USA Inc.Inventors: Mita Chattoraj, Michael J. Murcia, Aseet Mukherjee
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Publication number: 20200292478Abstract: A method for characterizing a process fluid comprising applying electrical power to a first resistance temperature detector (RTD) in contact with a fluid to increase the temperature of the first RTD; allowing the first RTD to cool toward a fluid equilibrium temperature; analyzing the temperature decay profile of the first RTD over time to determine thermal characteristics; applying electrical power to a second RTD in contact with the fluid to increase the temperature of the second RTD; allowing the second RTD to cool toward the fluid equilibrium temperature; analyzing the temperature decay profile of the second RTD over time to determine thermal characteristics; comparing the thermal characteristics of the first and second RTD to determining one or more characteristics of the fluid based; and performing a corrective action. The first RTD has a first coating and the second RTD has a second coating different than the first coating.Type: ApplicationFiled: March 6, 2020Publication date: September 17, 2020Inventors: Mita Chattoraj, Michael J. Murcia, Alexander P. Mantis, Craig W. Myers
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Publication number: 20190234893Abstract: Fluid flow systems can include one or more resistance temperature detectors (RTDs) in contact with the fluid flowing through the system. One or more RTDs can be operated in a heating mode and a measurement mode. Thermal behavior of the one or more RTDs can be analyzed to characterize a level of deposit formed on the RTD(s) from the fluid flowing through the system. Characterizations of deposition on RTDs operated at different temperatures can be used to establish a temperature-dependent deposition profile. The deposition profile can be used to determine if depositions are likely to form at certain locations in the fluid flow system, such as at a use device. Detected deposit conditions can initiate one or more corrective actions that can be taken to prevent or minimize deposit formation before deposits negatively impact operation of the fluid flow system.Type: ApplicationFiled: April 13, 2019Publication date: August 1, 2019Inventors: Mita Chattoraj, Michael J. Murcia, Aseet Mukherjee
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Patent number: 10295489Abstract: Fluid flow systems can include one or more resistance temperature detectors (RTDs) in contact with the fluid flowing through the system. One or more RTDs can be operated in a heating mode and a measurement mode. Thermal behavior of the one or more RTDs can be analyzed to characterize a level of deposit formed on the RTD(s) from the fluid flowing through the system. Characterizations of deposition on RTDs operated at different temperatures can be used to establish a temperature-dependent deposition profile. The deposition profile can be used to determine if depositions are likely to form at certain locations in the fluid flow system, such as at a use device. Detected deposit conditions can initiate one or more corrective actions that can be taken to prevent or minimize deposit formation before deposits negatively impact operation of the fluid flow system.Type: GrantFiled: September 12, 2016Date of Patent: May 21, 2019Assignee: Ecolab USA Inc.Inventors: Mita Chattoraj, Michael J. Murcia, Aseet Mukherjee
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Publication number: 20180245865Abstract: Fluid flow systems can include one or more thermoelectric devices in contact with the fluid flowing through the system. One or more thermoelectric devices can be operated in a temperature control mode and a measurement mode. Thermal behavior of the one or more thermoelectric devices can be analyzed to characterize a level of deposit formed on the thermoelectric device(s) from the fluid flowing through the system. Characterizations of deposition on thermoelectric devices operated at different temperatures can be used to establish a temperature-dependent deposition profile. The deposition profile can be used to determine if depositions are likely to form at various locations in the system, such as at a use device or in a flow vessel. Detected deposit conditions can initiate one or more corrective actions that can be taken to remove deposits, or to prevent or minimize deposit formation before deposits negatively impact operation of the system.Type: ApplicationFiled: February 24, 2017Publication date: August 30, 2018Inventors: Mita Chattoraj, Michael J. Murcia
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Publication number: 20180073996Abstract: Fluid flow systems can include one or more resistance temperature detectors (RTDs) in contact with the fluid flowing through the system. One or more RTDs can be operated in a heating mode and a measurement mode. Thermal behavior of the one or more RTDs can be analyzed to characterize a level of deposit formed on the RTD(s) from the fluid flowing through the system. Characterizations of deposition on RTDs operated at different temperatures can be used to establish a temperature-dependent deposition profile. The deposition profile can be used to determine if depositions are likely to form at certain locations in the fluid flow system, such as at a use device. Detected deposit conditions can initiate one or more corrective actions that can be taken to prevent or minimize deposit formation before deposits negatively impact operation of the fluid flow system.Type: ApplicationFiled: September 12, 2016Publication date: March 15, 2018Inventors: Mita Chattoraj, Michael J. Murcia, Aseet Mukherjee
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Patent number: 9032792Abstract: A device and method for reducing and/or preventing fouling of a sensor is disclosed. The method comprises operating ultrasound technology that is submerged or partially submerged into a liquid medium that is responsible for the fouling. The device comprises the ultrasound technology itself. The ultrasound technology may be operated intermittently at high intensity to advantageously provide cavitation of the liquid medium, while avoiding the disadvantages typical of continuously operating ultrasound technology at high intensity. Additionally, the method may be carried out by taking advantage of the piezoelectric property of quartz.Type: GrantFiled: January 19, 2012Date of Patent: May 19, 2015Assignee: Nalco CompanyInventors: Michael E. Bradley, Michael J. Murcia, Daniel E. Schwarz, Mita Chattoraj
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Publication number: 20130186188Abstract: A device and method for reducing and/or preventing fouling of a sensor is disclosed. The method comprises operating ultrasound technology that is submerged or partially submerged into a liquid medium that is responsible for the fouling. The device comprises the ultrasound technology itself. The ultrasound technology may be operated intermittently at high intensity to advantageously provide cavitation of the liquid medium, while avoiding the disadvantages typical of continuously operating ultrasound technology at high intensity. Additionally, the method may be carried out by taking advantage of the piezoelectric property of quartz.Type: ApplicationFiled: January 19, 2012Publication date: July 25, 2013Inventors: Michael E. Bradley, Michael J. Murcia, Daniel E. Schwarz, Mita Chattoraj
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Patent number: 7479490Abstract: A system of equipment allowing addition of solid materials to a pressurized pipeline wherein said solid material is conveyed in such a way as to be readily dissolved by the liquid in said pipeline. The system includes a solid material transfer device that is used to transfer solid material to the point of intake in a pressurized pipeline, without allowing liquid from the process pipeline to access the solid material in the solid material feeder. The system of equipment has been found to be particularly useful in feeding pellets containing resazurin.Type: GrantFiled: February 10, 2005Date of Patent: January 20, 2009Assignee: Nalco CompanyInventors: Robert R. Adams, Rodney H. Banks, Mita Chattoraj, Joe L. Schwartz
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Patent number: 7179384Abstract: A method to control a cooling water system based on the rate of consumption of fluorescent polymer is described and claimed. The method includes providing a cooling water system and a water treatment product including at least one fluorescent polymer and a fluorescent tracer. Measuring the fluorescence of the fluorescent polymer and calculating its rate of consumption provides a way of determining whether to adjust one or more operating parameters in the cooling water system.Type: GrantFiled: April 30, 2004Date of Patent: February 20, 2007Assignee: Nalco CompanyInventors: Barbara E. Moriarty, Narasimha M. Rao, Kun Xiong, Tzu-Yu Chen, Shunong Yang, Mita Chattoraj
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Publication number: 20050242042Abstract: A method to control a cooling water system based on the rate of consumption of a fluorescent polymer is described and claimed.Type: ApplicationFiled: April 30, 2004Publication date: November 3, 2005Inventors: Barbara Moriarty, Narasimha Rao, Kun Xiong, Tzu-Yu Chen, Shunong Yang, Mita Chattoraj
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Publication number: 20050133091Abstract: A system of equipment allowing addition of solid materials to a pressurized pipeline wherein said solid material is conveyed in such a way as to be readily dissolved by the liquid in said pipeline. The system includes a solid material transfer device that is used to transfer solid material to the point of intake in a pressurized pipeline, without allowing liquid from the process pipeline to access the solid material in the solid material feeder. The system of equipment has been found to be particularly useful in feeding pellets containing resazurin.Type: ApplicationFiled: February 10, 2005Publication date: June 23, 2005Inventors: Robert Adams, Rodney Banks, Mita Chattoraj, Joe Schwartz
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Patent number: 6901945Abstract: A system of equipment allowing addition of solid materials to a pressurized pipeline wherein said solid material is conveyed in such a way as to be readily dissolved by the liquid in said pipeline. The system includes a solid material transfer device that is used to transfer solid material to the point of intake in a pressurized pipeline, without allowing liquid from the process pipeline to access the solid material in the solid material feeder. The system of equipment has been found to be particularly useful in feeding pellets containing resazurin.Type: GrantFiled: September 30, 2003Date of Patent: June 7, 2005Assignee: Nalco CompanyInventors: Robert R. Adams, Rodney H. Banks, Mita Chattoraj, Joe L. Schwartz
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Publication number: 20050067013Abstract: A system of equipment allowing addition of solid materials to a pressurized pipeline wherein said solid material is conveyed in such a way as to be readily dissolved by the liquid in said pipeline. The system includes a solid material transfer device that is used to transfer solid material to the point of intake in a pressurized pipeline, without allowing liquid from the process pipeline to access the solid material in the solid material feeder. The system of equipment has been found to be particularly useful in feeding pellets containing resazurin.Type: ApplicationFiled: September 30, 2003Publication date: March 31, 2005Inventors: Robert R. Adams, Rodney Banks, Mita Chattoraj, Joe Schwartz
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Publication number: 20040203088Abstract: Methods for monitoring and controlling biofouling in membrane separation systems are provided. The present invention uses measurable amounts of fluorogenic agent(s) added to a feed stream to monitor and control the level of microbial growth during membrane separation and, thus, the purification of such feed stream during membrane separation.Type: ApplicationFiled: December 18, 2003Publication date: October 14, 2004Inventors: Bosco P. Ho, May W. Wu, E.H. Kelle Zeiher, Mita Chattoraj
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Publication number: 20040115757Abstract: Methods for monitoring and/or controlling biofouling in membrane separation systems are provided. The present invention utilizes measurable amounts of fluorogenic agent(s) added to a feed stream to monitor and/or control the level of microbial growth during membrane separation and, thus, the purification of such feed stream during membrane separation.Type: ApplicationFiled: November 25, 2003Publication date: June 17, 2004Inventors: Bosco P. Ho, May W. Wu, E. H. Kelle Zeiher, Mita Chattoraj
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Patent number: 6699684Abstract: Methods for monitoring and/or controlling biofouling in membrane separation systems are provided. The present invention utilizes measurable amounts of fluorogenic agent(s) added to a feed stream to monitor and/or control the level of microbial growth during membrane separation and, thus, the purification of such feed stream during membrane separation.Type: GrantFiled: July 23, 2002Date of Patent: March 2, 2004Assignee: Nalco CompanyInventors: Bosco P. Ho, May W. Wu, E. H. Kelle Zeiher, Mita Chattoraj