Patents by Inventor Tapantosh Chakrabarty

Tapantosh Chakrabarty 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: 20110047108
    Abstract: Disclosed is a method for managing obesity, diabetes, hair loss, aging, cardiovascular, or other blood glucose-spike-induced diseases by reducing the post-prandial blood glucose spike, or the glucose shock. The blood glucose spike, or the glucose shock is reduced by generating a person-specific glucose profile for at least one significant meal to tune or train a blood glucose model (kinetic, artificial intelligence or hybrid), and then using the tuned or the trained model embedded in a computation-capable electronic device to compute and recommend a person-specific meal plan and an exercise plan, including semi-continuous meal ingestion and post-meal exercise while sitting at home or office. Advantages over prior art are that the method uses less strenuous exercise with no or less medicine, is person-specific, quantitative and more suitable for use by an individual, a dietician, or a health care practitioner.
    Type: Application
    Filed: July 6, 2010
    Publication date: February 24, 2011
    Inventors: Neilin Chakrabarty, Tapantosh Chakrabarty
  • Publication number: 20100282277
    Abstract: A method of cleaning fouled vessels in the paraffinic froth treatment process (PFT). The foulant comprises asphaltenes. Foulant is at least partially removed from a surface of a vessel or conduit used in a PFT process by spraying a liquid against the foulant on the surface to physically remove at least a portion of the foulant from the surface. The liquid may be a PFT-compatible liquid, water, or a combination thereof. The method may be effected in the substantial absence of a foulant-dissolving agent.
    Type: Application
    Filed: May 29, 2008
    Publication date: November 11, 2010
    Inventors: Tapantosh Chakrabarty, Ken Sury
  • Publication number: 20100133150
    Abstract: A use of a fluorocarbon polymer as a surface of a vessel or conduit in a paraffinic froth treatment (PFT) process, for reducing fouling. The foulant comprises asphaltenes. The surface has an average water contact angle of greater than 90 degrees, a standard deviation of water contact angles divided by the average water contact angle of less than 0.1, and impurities of less than 1000 ppmw. The fluorocarbon polymer may be a polytetrafluoroethylene (PTFE)-based polymer. The surface may be substantially free of colorants, fillers, and plasticizers.
    Type: Application
    Filed: July 2, 2008
    Publication date: June 3, 2010
    Inventors: Tapantosh Chakrabarty, Ken Sury, Larry Lawlor, Mohsen Yeganeh
  • Publication number: 20100130386
    Abstract: The use of a solvent for bitumen extraction, either from mined oil sands or in situ. The solvent includes (a) a polar component, the polar component being a compound comprising a non-terminal carbonyl group; and (b) a non-polar component, the non-polar component being a substantially aliphatic substantially non-halogenated alkane. The solvent has a Hansen hydrogen bonding parameter of 0.3 to 1.7 and/or a volume ratio of (a):(b) in the range of 10:90 to 50:50.
    Type: Application
    Filed: October 26, 2009
    Publication date: May 27, 2010
    Inventor: Tapantosh Chakrabarty
  • Publication number: 20100126911
    Abstract: In solvent-assisted bitumen extraction, a native marker, for example: sulfur, nickel, vanadium, iron copper, or manganese, is used to control the solvent to bitumen ratio in a process stream such as a stream from a froth separation unit (FSU) and/or to measure hydrocarbon loss in a tailings solvent recovery unit (TSRU).
    Type: Application
    Filed: October 26, 2009
    Publication date: May 27, 2010
    Inventors: Tapantosh Chakrabarty, Ken N. Sury
  • Patent number: 7294156
    Abstract: The invention relates to a process for splitting bitumen into two fractions and rendering a heavier bottom fraction as a useable emulsion fuel. The process is particularly effective in creating an alternate fuel to natural gas in a steam-based bitumen recovery process wherein bitumen is recovered from an underground reservoir.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: November 13, 2007
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Tapantosh Chakrabarty, Mainak Ghosh
  • Publication number: 20040055208
    Abstract: The invention relates to a process for splitting bitumen into two fractions and rendering a heavier bottom fraction as a useable emulsion fuel. The process is particularly effective in creating an alternate fuel to natural gas in a steam-based bitumen recovery process wherein bitumen is recovered from an underground reservoir.
    Type: Application
    Filed: August 22, 2003
    Publication date: March 25, 2004
    Applicant: EXXONMOBIL UPSTREAM RESEARCH COMPANY
    Inventors: Tapantosh Chakrabarty, Mainak Ghosh
  • Patent number: 5935418
    Abstract: A reactor system is provided which is particularly suitable for hydroprocessing a heavy hydrocarbon under catalytic slurry hydroprocessing conditions. This reactor system includes a single reaction zone containing at least one filter element for the separation of liquid product from catalyst particles in the reaction zone. Means are provided for backwashing the filter element. Preferably, at least two filter elements are provided one of which is used for separation of product and the other for introduction of hydrogen into the reactor. Additionally, means are provided for switching the flow between the two filter elements thereby permitting continuous operation of the system.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: August 10, 1999
    Assignee: Exxon Research and Engineering Co.
    Inventors: Tapantosh Chakrabarty, Ghosh Mainak