Patents by Inventor Somenath Mitra

Somenath Mitra 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: 20190118143
    Abstract: Radiative heating and radiative feed modification systems and methods using microwave, radio frequency, magnetic field and ultrasound in membrane separation processes including membrane distillation (MD), reverse osmosis, forward osmosis and pervaporation are disclosed. Membrane distillation systems include at least one MD module, the MD module having at least one membrane, a feed inlet operable to receive a feed media and a feed outlet, and a radiative energy source operable to apply radiation to a feed media entering the feed inlet.
    Type: Application
    Filed: July 10, 2018
    Publication date: April 25, 2019
    Applicant: NEW JERSEY INSTITUTE OF TECHNOLOGY
    Inventors: Somenath Mitra, Sagar Roy
  • Patent number: 9919274
    Abstract: Carbon nanotube (CNT) immobilized membranes for harvesting pure water from air include CNTs incorporated into a layer of super-absorbing polymer. The super-absorbing polymer may be cast over a porous substrate. The super-absorbing polymer binds strongly to water and generates water clusters while the CNTs are operable to interrupt the specific water-polymer and water-water interactions to generate more free water which permeates more easily through the membrane. Methods of forming the CNT immobilized membranes are provided. The CNT immobilized membranes disclosed herein exhibit improved water vapor extraction efficiency, water vapor removal and mass transfer coefficient.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: March 20, 2018
    Assignee: New Jersey Institute of Technology
    Inventors: Somenath Mitra, Sagar Roy
  • Publication number: 20170368506
    Abstract: Membrane distillation (MD) systems include at least two MD modules arranged in series, each of at least two MD modules including a condensing media inlet operable to receive a condensing media and a condensing media outlet, a feed inlet operable to receive a feed media and a feed outlet, and a first heating element positioned and operable to heat a feed prior to or upon introduction of the feed to a first of the at least two MD modules, wherein a stream exiting the feed outlet of the first of the at least two MD modules is introduced to the second of the at least two MD modules. Other MD systems include at least two MD modules arranged in parallel.
    Type: Application
    Filed: June 20, 2017
    Publication date: December 28, 2017
    Applicant: NEW JERSEY INSTITUTE OF TECHNOLOGY
    Inventors: Somenath Mitra, Sagar Roy
  • Publication number: 20170333848
    Abstract: Membranes including functionalized carbon nanotubes, nanodiamonds and/or graphene oxide immobilized in or on the membranes are disclosed. The membranes including the immobilized nanocarbons increase interactions with water vapor to improve desalination efficiency in membrane distillation. The membranes may be deployed in all modes of membrane distillation such as air gap membrane distillation, direct contact membrane distillation, vacuum membrane distillation and other separations.
    Type: Application
    Filed: August 1, 2017
    Publication date: November 23, 2017
    Inventors: Somenath Mitra, Sagar Roy, Madhuleena Bhadra
  • Publication number: 20170072369
    Abstract: Carbon nanotube (CNT) immobilized membranes for harvesting pure water from air include CNTs incorporated into a layer of super-absorbing polymer. The super-absorbing polymer may be cast over a porous substrate. The super-absorbing polymer binds strongly to water and generates water clusters while the CNTs are operable to interrupt the specific water-polymer and water-water interactions to generate more free water which permeates more easily through the membrane. Methods of forming the CNT immobilized membranes are provided. The CNT immobilized membranes disclosed herein exhibit improved water vapor extraction efficiency, water vapor removal and mass transfer coefficient.
    Type: Application
    Filed: September 14, 2016
    Publication date: March 16, 2017
    Applicant: NEW JERSEY INSTITUTE OF TECHNOLOGY
    Inventors: Somenath Mitra, Sagar Roy
  • Patent number: 9293720
    Abstract: Organic and organic/inorganic hybrid bulk heterojunction photovoltaic devices with improved efficiencies are disclosed. The organic photovoltaic device comprises a photoactive polymer:fullerene C60-carbon nanotube (polymer:C60-CNT) composite as a component of the active layer. Under light irradiation, photoinduced charge separation at the polymer:C60 interface is followed by electron transfer from C60 onto CNTs for efficient electron transport towards an electrode. The organic/inorganic hybrid photovoltaic device comprises quantum dots and carbon nanotubes. Power conversion efficiency enhancement methods of polymer-CNT based photovoltaics are also provided.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: March 22, 2016
    Assignee: New Jersey Institute of Technology
    Inventors: Somenath Mitra, Cheng Li
  • Patent number: 9249528
    Abstract: The invention is directed to a method of forming, producing or manufacturing functionalized nanomaterials, and, specifically, soluble functionalized nanomaterials. The presently described invention also relates to nanomaterial-based composites consisting of a target material, which can include ceramic, polymer, or metallic matrices incorporated into or grown on nanomaterials, as well as a method or synthesis technique for the formation, production, or manufacture of nanomaterial-based composites through microwave-induced reaction.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: February 2, 2016
    Assignee: New Jersey Institute of Technology
    Inventors: Somenath Mitra, Zafar Iqbal
  • Patent number: 9169579
    Abstract: The present disclosure provides an improved membrane or substrate having carbon nanotubes introduced and/or immobilized therein, and an improved method for introducing and/or immobilizing carbon nanotubes in membranes or substrates. More particularly, the present disclosure provides for improved systems and methods for fabricating membranes or substrates having carbon nanotubes immobilized therein. In one embodiment, the present disclosure provides for systems and methods for introducing and/or immobilizing functionalized carbon nanotubes into the pore structure of a polymeric membrane or substrate, thereby dramatically improving the performance of the polymeric membrane or substrate. In exemplary embodiments, the present disclosure provides for systems and methods for the fabrication of nanotube immobilized membranes by incorporating CNTs in a membrane or substrate.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: October 27, 2015
    Assignee: New Jersey Institute of Technology
    Inventors: Kamilah Hylton, Somenath Mitra
  • Patent number: 9116141
    Abstract: A microtrap assembly includes a carbon nanotube sorbent. The microtrap assembly may be employed as a preconcentrator operable to deliver a sample to an analytical device to measure the concentrations of greenhouse gases. A system includes a microtrap having a carbon nanotube sorbent for measuring the concentrations of greenhouse gases in a sample.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: August 25, 2015
    Assignee: New Jersey Institute of Technology
    Inventors: Somenath Mitra, Chutarat Saridara
  • Patent number: 9039900
    Abstract: Membranes for membrane distillation include at least one hollow fiber porous hydrophobic membrane, the at least one membrane including carbon nanotubes incorporated into the pore structure of the membrane. Membrane distillation systems may include a heat exchanger operably connected to a hollow fiber membrane module with one or more membranes including carbon nanotubes. Methods of solvent removal, sample preconcentration and desalination employing hollow fiber porous hydrophobic membranes with carbon nanotubes are disclosed.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: May 26, 2015
    Assignee: New Jersey Institute of Technology
    Inventors: Somenath Mitra, Ken Gethard
  • Publication number: 20150096935
    Abstract: Membranes including functionalized carbon nanotubes, nanodiamonds and/or graphene oxide immobilized in or on the membranes are disclosed. The membranes including the immobilized nanocarbons increase interactions with water vapor to improve desalination efficiency in membrane distillation. The membranes may be deployed in all modes of membrane distillation such as air gap membrane distillation, direct contact membrane distillation, vacuum membrane distillation and other separations.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 9, 2015
    Inventors: Somenath Mitra, Sagar Roy, Madhulina Bhadra
  • Publication number: 20150001150
    Abstract: Membranes for membrane distillation include at least one hollow fiber porous hydrophobic membrane, the at least one membrane including carbon nanotubes incorporated into the pore structure of the membrane. Membrane distillation systems may include a heat exchanger operably connected to a hollow fiber membrane module with one or more membranes including carbon nanotubes. Methods of solvent removal, sample preconcentration and desalination employing hollow fiber porous hydrophobic membranes with carbon nanotubes are disclosed.
    Type: Application
    Filed: April 13, 2011
    Publication date: January 1, 2015
    Applicant: New Jersey Institute of Technology
    Inventors: Somenath Mitra, Ken Gethard
  • Publication number: 20140199578
    Abstract: This invention presents the development of flexible battery especially primary and secondary alkaline batteries. Nano carbons, in particularly carbon nanotubes are implemented in conductive polymers to develop flexible electrodes. Polymer separators that can withstand high pH and serve the purpose of electrolyte storage is used to enhance performance. The relatively inexpensive multiwall nanotubes represent are effective ingredients in development of flexible electrodes.
    Type: Application
    Filed: January 15, 2014
    Publication date: July 17, 2014
    Inventors: Somenath Mitra, Zhiqian Wang
  • Patent number: 8182783
    Abstract: A novel microwave-assisted process is described for the rapid removal of catalytic metal and non-desirable carbon impurities in fullerene, single wall, and multiple wall carbon nanotube preparations. The purification process is carried out at various programmed pressures, power levels and reaction times in a suspension of the nanocarbon moieties in the presence of strong acids (for example, a mixture of sulfuric acid and nitric acid), in weak acids (for example, acetic acid) and in the presence of chelating agents (for example, EDTA—ethylenediaminetetraacetic acid). In one embodiment, high metal removal efficiency of 70 to 90% is observed.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: May 22, 2012
    Assignee: New Jersey Institute of Technology
    Inventors: Somenath Mitra, Yuhong Chen
  • Publication number: 20110271838
    Abstract: A microtrap assembly includes a carbon nanotube sorbent. The microtrap assembly may be employed as a preconcentrator operable to deliver a sample to an analytical device to measure the concentrations of greenhouse gases. A system includes a microtrap having a carbon nanotube sorbent for measuring the concentrations of greenhouse gases in a sample.
    Type: Application
    Filed: April 13, 2011
    Publication date: November 10, 2011
    Applicant: New Jersey Institute of Technology
    Inventors: Somenath Mitra, Chutarat Saridara
  • Publication number: 20110272354
    Abstract: Membranes for membrane distillation include at least one hollow fiber porous hydrophobic membrane, the at least one membrane including carbon nanotubes incorporated into the pore structure of the membrane. Membrane distillation systems may include a heat exchanger operably connected to a hollow fiber membrane module with one or more membranes including carbon nanotubes. Methods of solvent removal, sample preconcentration and desalination employing hollow fiber porous hydrophobic membranes with carbon nanotubes are disclosed.
    Type: Application
    Filed: April 13, 2011
    Publication date: November 10, 2011
    Applicant: New Jersey Institute of Technology
    Inventors: Somenath Mitra, Ken Gethard
  • Publication number: 20100326813
    Abstract: The invention is directed to a method of forming, producing or manufacturing functionalized nanomaterials, and, specifically, soluble functionalized nanomaterials. The presently described invention also relates to nanomaterial-based composites consisting of a target material, which can include ceramic, polymer, or metallic matrices incorporated into or grown on nanomaterials, as well as a method or synthesis technique for the formation, production, or manufacture of nanomaterial-based composites through microwave-induced reaction.
    Type: Application
    Filed: July 2, 2010
    Publication date: December 30, 2010
    Applicant: NEW JERSEY INSTITUTE OF TECHNOLOGY
    Inventors: Somenath Mitra, Zafar Iqbal
  • Patent number: 7754054
    Abstract: The invention is directed to a method of forming, producing or manufacturing functionalized nanomaterials, and, specifically, soluble functionalized nanomaterials. The presently described invention also relates to nanomaterial-based composites consisting of a target material, which can include ceramic, polymer, or metallic matrices incorporated into or grown on nanomaterials, as well as a method or synthesis technique for the formation, production, or manufacture of nanomaterial-based composites through microwave-induced reaction.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: July 13, 2010
    Assignee: New Jersey Institute of Technology
    Inventors: Somenath Mitra, Zafar Iqbal
  • Publication number: 20100086470
    Abstract: A novel microwave-assisted process is described for the rapid removal of catalytic metal and non-desirable carbon impurities in fullerene, single wall, and multiple wall carbon nanotube preparations. The purification process is carried out at various programmed pressures, power levels and reaction times in a suspension of the nanocarbon moieties in the presence of strong acids (for example, a mixture of sulfuric acid and nitric acid), in weak acids (for example, acetic acid) and in the presence of chelating agents (for example, EDTA—ethylenediaminetetraacetic acid). In one embodiment, high metal removal efficiency of 70 to 90% is observed.
    Type: Application
    Filed: November 16, 2006
    Publication date: April 8, 2010
    Inventors: Somenath Mitra, Zafar Iqbal
  • Publication number: 20090304923
    Abstract: The present disclosure provides for improved soluble carbon nanotube (“CNT”) composites at least partially coated with a metal material, and improved methods for the synthesis, generation or formation of substantially soluble carbon nanotube composites via heating conditions (e.g., microwave reactions). For example, the present disclosure provides for methods for the rapid, controllable, environmentally-friendly formation of substantially soluble carbon nanotube composites via in-situ microwave-assisted reactions, wherein the carbon nanotube composites are at least partially coated with nanometal particles (e.g., nanoplatinum particles), and wherein the nanocomposites are substantially soluble in water and/or in organic solvents (e.g., o-dichlorobenzene (ODCB), chloroform, tetrahydrofuran (THF), ethanol, toluene, hexane and DMF).
    Type: Application
    Filed: July 15, 2009
    Publication date: December 10, 2009
    Applicant: NEW JERSEY INSTITUTE OF TECHNOLOGY
    Inventors: Somenath Mitra, Yuhong Chen