Patents by Inventor Dipankar Ghosh

Dipankar Ghosh 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: 10399295
    Abstract: A passive electrical article including a dielectric layer having a nonwoven material.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: September 3, 2019
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Rui Yang, Guoping Mao, Dipankar Ghosh, Ji-Hwa Lee, Seungbae Min, Justine A. Mooney
  • Patent number: 10386244
    Abstract: A passive temperature-sensing apparatus, which includes a capacitive sensing element that includes a capacitive sensing composition that includes a ferroelectric ceramic material that exhibits a measurable electrical Curie temperature that is below 30 degrees C. The capacitive sensing composition exhibits a negative slope of capacitance versus temperature over the temperature range of from 30 degrees C. to 150 degrees C.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: August 20, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Dipankar Ghosh, Myungchan Kang, Jaewon Kim
  • Patent number: 10345340
    Abstract: The invention relates to a voltage sensing device for a high and/or medium-voltage power-carrying conductor, the voltages sensing device comprising: • a carrier element (3) with a passageway for receiving the power-carrying conductor, • wherein the carrier element comprises an electrode (4) extending in an axial direction of the passageway of the carrier element and operable as a first electrode of the voltage sensing device, wherein • a conductor (1) of the power cable is operable as the second electrode of the voltage sensing device and wherein • the carrier element has a coefficient of thermal expansion that is less than 5×10^?6 1/K at 20 C.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: July 9, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Mark Gravermann, Friedrich A. Busemann, Bernd Schubert, Gerhard Lohmeier, Andreea Sabo, Rainer Reeken, Michael H. Stalder, Christian Weinmann, Sebastian Eggert, Dipankar Ghosh, Myungchan Kang, Christopher D. Sebesta
  • Patent number: 10340054
    Abstract: Polymer composites that are suitable for use as electromagnetic interference mitigaters include a lossy polymeric matrix, ceramic particles dispersed within the polymeric matrix, and conductive particles dispersed within the polymeric matrix. The lossy polymeric matrix may be a fluorocarbon-based polymer matrix, or an epoxy-based polymer matrix. The ceramic particles may be metal oxide particles, especially copper oxide (CuO) particles. The conductive particles may be carbon black. Other electromagnetic interference mitigating polymer matrices include a lossy polymeric matrix and copper oxide (CuO) particles dispersed within the polymeric matrix.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: July 2, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Dipankar Ghosh, Biplab K. Roy, Nitin S. Satarkar
  • Publication number: 20190099147
    Abstract: Systems and methods described herein determine an objective metric for analyzing health of a patient's liver. In some embodiments, the system may include a scanner that can detect radiation counts responsive to administration of radioactive compound to a patient. Further, the system may include an image detection module that can access image data responsive to the detected radiation counts by the scanner. The image detection module can programmatically identify a first region of interest corresponding to a liver of the patient from the image data. A parameter calculator module can programmatically determine a first attribute associated with the first region of interest and calculate a first parameter indicating health of the liver of the patient based at least in part on the first attribute associated with the first region of interest.
    Type: Application
    Filed: September 6, 2018
    Publication date: April 4, 2019
    Inventors: Dipankar Ghosh, John Carl Hoefs
  • Patent number: 10215778
    Abstract: Voltage sensor (1) for a high- or medium-voltage power-carrying conductor for a power network, such as an inner conductor of a power cable or a cable connector or a bus bar. The voltage sensor has a tubular shape and an axial passageway (40), which can receive the conductor. The voltage sensing device comprises a) a radially-inner electrode (20), operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power-carrying conductor, b) a radially-outer electrode (30), operable as a second sensing electrode of the sensing capacitor, and c) a solid carrier element (10), at least a first portion of which is arranged between the inner electrode and the outer electrode, the first portion being operable as a dielectric of the sensing capacitor. The sensor can be accommodated in a cable accessory. The carrier element may comprise ceramic material to increase accuracy.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: February 26, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Mark Gravermann, Sebastian Eggert, Michael Petry, Werner Roehling, Friedrich A. Busemann, Bernd Schubert, Gerhard Lohmeier, Michael H. Stalder, Jens Weichold, Rainer Reeken, Andreea Sabo, Christian Weinmann, Dipankar Ghosh, Myungchan Kang, Christopher D. Sebesta
  • Publication number: 20190049318
    Abstract: A passive temperature-sensing apparatus, which includes a capacitive sensing element that includes a capacitive sensing composition that includes a ferroelectric ceramic material that exhibits a measurable electrical Curie temperature that is below 30 degrees C. The capacitive sensing composition exhibits a negative slope of capacitance versus temperature over the temperature range of from 30 degrees C. to 150 degrees C.
    Type: Application
    Filed: October 19, 2018
    Publication date: February 14, 2019
    Inventors: Dipankar Ghosh, Myungchan Kang, Jaewon Kim
  • Publication number: 20180376628
    Abstract: Electromagnetic interference (EMI) shielding articles and methods of producing and using the same are described. The articles include electrically conductive fillers and silsesquioxane-like (SSQ-like) particles distributed inside a polymeric matrix material. In some cases, adding the SSQ-like particles leads to increased porosity of the articles which improves EMI absorbing performance.
    Type: Application
    Filed: December 9, 2016
    Publication date: December 27, 2018
    Inventors: Dipankar Ghosh, Jitendra S. Rathore
  • Patent number: 10139288
    Abstract: A passive temperature-sensing apparatus, which includes a capacitive sensing element that includes a capacitive sensing composition that includes a ferroelectric ceramic material that exhibits a measurable electrical Curie temperature that is below 30 degrees C. The capacitive sensing composition exhibits a negative slope of capacitance versus temperature over the temperature range of from 30 degrees C. to 150 degrees C.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: November 27, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Dipankar Ghosh, Myungchan Kang, Jaewon Kim
  • Patent number: 10076299
    Abstract: Systems and methods for determining an objective metric for analyzing health of a patient's liver are described. In some embodiments, the system may include a scanner that can detect radiation counts responsive to administration of radioactive compound to a patient. Further, the system may include an image detection module that can access image data responsive to the detected radiation counts by the scanner. The image detection module can programmatically identify a first region of interest corresponding to a liver of the patient from the image data. A parameter calculator module can programmatically determine a first attribute associated with the first region of interest and calculate a first parameter indicating health of the liver of the patient based at least in part on the first attribute associated with the first region of interest.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: September 18, 2018
    Assignee: HEPATIQ, INC.
    Inventors: Dipankar Ghosh, John Carl Hoefs
  • Publication number: 20180177081
    Abstract: Electromagnetic interference (EMI) shielding composites and methods of producing the same are described. Carbon nanostructure (CNS) fillers including cross-linked carbon nanotubes (CNTs) and a polymeric encapsulation material are provided, where the carbon nanotubes are encapsulated by the polymeric encapsulation material. The CNS fillers are treated to remove at least a portion of the polymeric encapsulation material. After removing the polymeric encapsulation material, the CNS fillers are mixed with a curable matrix material to obtain EMI shielding composites. In some cases, the removal of the polymeric encapsulation material results in diminished dielectric polarization characteristics for the composites.
    Type: Application
    Filed: June 2, 2016
    Publication date: June 21, 2018
    Inventor: Dipankar Ghosh
  • Publication number: 20180136078
    Abstract: The present invention relates generally to a system and method for measuring the structural characteristics of an object. The object is subjected to an energy application processes and provides an objective, quantitative measurement of structural characteristics of an object. The system may include a device, for example, a percussion instrument, capable of being reproducibly placed against the object undergoing such measurement for reproducible positioning. The structural characteristics as defined herein may include vibration damping capacities, acoustic damping capacities, structural integrity or structural stability.
    Type: Application
    Filed: December 22, 2017
    Publication date: May 17, 2018
    Inventors: James C. Earthman, Cherilyn G. Sheets, Dipankar Ghosh, John Wallace Berger
  • Patent number: 9972798
    Abstract: A composite diode (100) includes a first conductive sheet, (110) a second conductive sheet, (120) and a nonlinear polymer composite material (130) sandwiched therebetween. The nonlinear polymer composite material comprises nonlinear inorganic particles (150) retained in a polymeric binder material (140). Methods of making the composite diode, and electronic devices including them, are also disclosed.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: May 15, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Dipankar Ghosh, Ge Jiang, Rui Yang
  • Publication number: 20180123253
    Abstract: At least some aspects of the present disclosure feature a communication device for propagating an electromagnetic wave around a blocking structure. The communication device includes a passive coupling device to capture the electromagnetic wave, and a waveguide electromagnetically coupled to the coupling device. The waveguide is disposed around the blocking structure. The waveguide has a resonance frequency matched with the coupling device. The waveguide is configured to propagate the electromagnetic wave captured by the coupling device.
    Type: Application
    Filed: April 11, 2016
    Publication date: May 3, 2018
    Inventors: Christian Weinmann, Jaewon Kim, Justin M. Johnson, Dipankar Ghosh, Craig W. Lindsay
  • Publication number: 20180115034
    Abstract: At least some aspects of the present disclosure feature a waveguide for propagating an electromagnetic wave. The waveguide includes a base material and a plurality of resonators disposed in a pattern, the plurality of resonators having a resonance frequency. Each of the plurality of resonators has a relative permittivity greater than a relative permittivity of the base material. At least two of the plurality of resonators are spaced according to a lattice constant that defines a distance between a center of a first one of the resonators and a center of a neighboring second one of the resonators.
    Type: Application
    Filed: April 18, 2016
    Publication date: April 26, 2018
    Inventors: Jaewon Kim, Justin M. Johnson, Craig W. Lindsay, Dipankar Ghosh
  • Patent number: 9876342
    Abstract: Compositions comprising ferrosoferric oxide dispersed in a polymer matrix. Such compositions may exhibit properties suitable for achieving both resistive field grading effects and capacitive field grading effects e.g. in electrical stress control devices and surge arrestor devices. Such compositions may optionally include one or more capacitive field grading additives and/or conductive additives.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: January 23, 2018
    Assignee: 3M Innovative Properties Company
    Inventor: Dipankar Ghosh
  • Patent number: 9869606
    Abstract: The present invention relates generally to a system and method for measuring the structural characteristics of an object. The object is subjected to an energy application processes and provides an objective, quantitative measurement of structural characteristics of an object. The system may include a device, for example, a percussion instrument, capable of being reproducibly placed against the object undergoing such measurement for reproducible positioning. The structural characteristics as defined herein may include vibration damping capacities, acoustic damping capacities, structural integrity or structural stability.
    Type: Grant
    Filed: December 15, 2012
    Date of Patent: January 16, 2018
    Assignee: Perimetrics, LLC
    Inventors: James C. Earthman, Cherilyn G. Sheets, Dipankar Ghosh, John Wallace Berger
  • Patent number: 9839553
    Abstract: An automated orthotic device with a treatment regimen and a method for using an automated orthotic device with a treatment regimen to provide a plurality of prescribed tension settings. The orthotic device may comprise a body brace, a controller, a data storage means, and a communication means to address the problem of patients being required to visit the physician's office every time an adjustment must be made in the prescribed tension setting in their automated orthotic device. In one embodiment, a plurality of prescribed tension settings in the automated orthotic device are sorted so that as the patient's condition improves, the next prescribed tension setting in the treatment regimen may be applied. In another embodiment, the physician is allowed to edit or supplement a patient's treatment regimen remotely by connecting to the automated orthotic device over a network.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: December 12, 2017
    Assignee: BIO CYBERNETICS INTERNATIONAL, INC.
    Inventors: Ed Bannister, Michael L. Martin, Sai Chung Chan, Matthew V. Waidelich, Dipankar Ghosh, Roberto A. Lucero, Oscar A. Villa, John W. Berger, Jeffery W. Barnhouse
  • Publication number: 20170271040
    Abstract: Polymer composites that are suitable for use as electromagnetic interference mitigaters include a lossy polymeric matrix, ceramic particles dispersed within the polymeric matrix, and conductive particles dispersed within the polymeric matrix. The lossy polymeric matrix may be a fluorocarbon-based polymer matrix, or an epoxy-based polymer matrix. The ceramic particles may be metal oxide particles, especially copper oxide (CuO) particles. The conductive particles may be carbon black. Other electromagnetic interference mitigating polymer matrices include a lossy polymeric matrix and copper oxide (CuO) particles dispersed within the polymeric matrix.
    Type: Application
    Filed: June 7, 2017
    Publication date: September 21, 2017
    Inventors: Dipankar Ghosh, Biplab K. Roy, Nitin S. Satarkar
  • Patent number: 9704613
    Abstract: Polymer composites that are suitable for use as electromagnetic interference mitigaters include a lossy polymeric matrix, ceramic particles dispersed within the polymeric matrix, and conductive particles dispersed within the polymeric matrix. The lossy polymeric matrix may be a fluorocarbon-based polymer matrix, or an epoxy-based polymer matrix. The ceramic particles may be metal oxide particles, especially copper oxide (CuO) particles. The conductive particles may be carbon black. Other electromagnetic interference mitigating polymer matrices include a lossy polymeric matrix and copper oxide (CuO) particles dispersed within the polymeric matrix.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: July 11, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Dipankar Ghosh, Biplab K. Roy, Nitin S. Satarkar