Patents by Inventor Depanjan Sarkar

Depanjan Sarkar 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: 20230077659
    Abstract: The present invention relates to methods for identifying high molecular mass lipids in samples. Such high molecular mass lipids may be useful as biomarkers for the identification of disease.
    Type: Application
    Filed: February 5, 2021
    Publication date: March 16, 2023
    Inventors: Perdita Barran, Depanjan Sarkar, Drupad Trivedi, Eleanor Sinclair, Monty Silverdale, Joy Milne
  • Publication number: 20230080918
    Abstract: The present invention relates to methods for detecting the presence or absence of Parkinson's disease (PD).
    Type: Application
    Filed: February 5, 2021
    Publication date: March 16, 2023
    Inventors: Perdita Barran, Depanjan Sarkar, Drupad Trivedi, Eleanor Sinclair, Monty Silverdale, Joy Milne
  • Patent number: 11351508
    Abstract: The present invention relates to a new method for creating nanopores in single layer molybdenum disulfide (MoS2) nanosheets (NSs) by the electrospray deposition (ESD) of silver ions on a water suspension of the former. Electrospray deposited silver ions react with the MoS2 NSs at the liquid-air interface resulting in Ag2S nanoparticles (NPs) which goes into the solution leaving the NSs with holes of 3-5 nm diameter. Specific reaction with the S of MoS2 NSs leads to Mo-rich edges. Such Mo-rich defects are highly efficient for the generation of active oxygen species such as H2O2, under visible light, which causes efficient disinfection of water. The holey MoS2 NSs shows 105 times higher efficiency in disinfection compared to normal MoS2 NSs. Developed a conceptual prototype and tested with multiple bacterial strains and a viral strain, demonstrating the utility of the method for practical applications.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: June 7, 2022
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS)
    Inventors: Pradeep Thalappil, Depanjan Sarkar, Anirban Som, Biswajit Mondal, Swathy Jakka Ravindran
  • Publication number: 20210287894
    Abstract: The present invention relates to methods of assessing whether an individual has Parkinson's Disease (PD) and/or is no longer responding to treatment, the method comprising the identification of one or more volatile compounds in the sebum of the individual. The present invention also relates to methods of extracting and detecting analytes from sebum.
    Type: Application
    Filed: August 1, 2019
    Publication date: September 16, 2021
    Inventors: Perdita Barran, Depanjan Sarkar, Drupad Trivedi, Tilo Kunath, Joy Milne, Eleanor Sinclair
  • Publication number: 20210205791
    Abstract: The present invention relates to an ambient ion based method of making free-standing 2D metal sheets made of bare NPs, at the air-liquid interface. An electro-hydrodynamic flow field was generated by electrospray deposition on the liquid surface, which in turn assisted the assembly of the NPs. The NP-NSs were made under ambient conditions at room temperature from metal salt precursors. The sheets can be made of different elements such as Pd, Au, and Ag. Synthesized 2D NP-NSs were used as efficient and reusable heterogeneous catalysts for C—C bond formation reactions. These thin metal sheets may also be used as catalysts, sensors, gas adsorbing media, electrodes for electrochemical reactions, etc.
    Type: Application
    Filed: October 12, 2018
    Publication date: July 8, 2021
    Inventors: Pradeep THALAPPIL, Depanjan SARKAR, Anirban SOM, Manju C.K
  • Patent number: 10991564
    Abstract: The invention generally relates to mass spectrometry probes and systems for ionizing a sample. In certain embodiments, the invention provides a mass spectrometry probe including a substrate in which a portion of the substrate is coated with a material, a portion of which protrudes from the substrate.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: April 27, 2021
    Assignee: Purdue Research Foundation
    Inventors: Robert Graham Cooks, Depanjan Sarkar, Thalappil Pradeep, Rahul Narayanan
  • Publication number: 20200330928
    Abstract: The present invention relates to a new method for creating nanopores in single layer molybdenum disulfide (MoS2) nanosheets (NSs) by the electrospray deposition (ESD) of silver ions on a water suspension of the former. Electrospray deposited silver ions react with the MoS2 NSs at the liquid-air interface resulting in Ag2S nanoparticles (NPs) which goes into the solution leaving the NSs with holes of 3-5 nm diameter. Specific reaction with the S of MoS2 NSs leads to Mo-rich edges. Such Mo-rich defects are highly efficient for the generation of active oxygen species such as H2O2, under visible light, which causes efficient disinfection of water. The holey MoS2 NSs shows 105 times higher efficiency in disinfection compared to normal MoS2 NSs. Developed a conceptual prototype and tested with multiple bacterial strains and a viral strain, demonstrating the utility of the method for practical applications.
    Type: Application
    Filed: October 18, 2018
    Publication date: October 22, 2020
    Inventors: Pradeep THALAPPIL, Depanjan SARKAR, Anirban SOM, Biswajit MONDAL, Swathy JAKKA RAVINDRAN
  • Publication number: 20200168446
    Abstract: The invention generally relates to mass spectrometry probes and systems for ionizing a sample. In certain embodiments, the invention provides a mass spectrometry probe including a substrate in which a portion of the substrate is coated with a material, a portion of which protrudes from the substrate.
    Type: Application
    Filed: January 2, 2020
    Publication date: May 28, 2020
    Inventors: Robert Graham Cooks, Depanjan Sarkar, Thalappil Pradeep, Rahul Narayanan
  • Patent number: 10559455
    Abstract: The invention generally relates to mass spectrometry probes and systems for ionizing a sample. In certain embodiments, the invention provides a mass spectrometry probe including a substrate in which a portion of the substrate is coated with a material, a portion of which protrudes from the substrate.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: February 11, 2020
    Assignee: Purdue Research Foundation
    Inventors: Robert Graham Cooks, Depanjan Sarkar, Thalappil Pradeep, Rahul Narayanan
  • Publication number: 20190355567
    Abstract: The invention generally relates to mass spectrometry probes and systems for ionizing a sample. In certain embodiments, the invention provides a mass spectrometry probe including a substrate in which a portion of the substrate is coated with a material, a portion of which protrudes from the substrate.
    Type: Application
    Filed: July 19, 2019
    Publication date: November 21, 2019
    Inventors: Robert Graham Cooks, Depanjan Sarkar, Thalappil Pradeep, Rahul Narayanan
  • Patent number: 10395913
    Abstract: The invention generally relates to mass spectrometry probes and systems for ionizing a sample. In certain embodiments, the invention provides a mass spectrometry probe including a substrate in which a portion of the substrate is coated with a material, a portion of which protrudes from the substrate.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: August 27, 2019
    Assignee: Purdue Research Foundation
    Inventors: Robert Graham Cooks, Depanjan Sarkar, Thalappil Pradeep, Rahul Narayanan
  • Patent number: 10113242
    Abstract: The invention generally relates to systems and methods for producing metal clusters; functionalized surfaces; and droplets including solvated metal ions. In certain aspects, the invention provides methods that involve providing a metal and a solvent. The methods additionally involve applying voltage to the solvated metal to thereby produce solvent droplets including ions of the metal containing compound, and directing the solvent droplets including the metal ions to a target. In certain embodiments, once at the target, the metal ions can react directly or catalyze reactions.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: October 30, 2018
    Assignee: Purdue Research Foundation
    Inventors: Robert Graham Cooks, Michael Stanley Wleklinski, Thalappil Pradeep, Depanjan Sarkar
  • Publication number: 20170335477
    Abstract: The invention generally relates to systems and methods for producing metal clusters; functionalized surfaces; and droplets including solvated metal ions. In certain aspects, the invention provides methods that involve providing a metal and a solvent. The methods additionally involve applying voltage to the solvated metal to thereby produce solvent droplets including ions of the metal containing compound, and directing the solvent droplets including the metal ions to a target. In certain embodiments, once at the target, the metal ions can react directly or catalyze reactions.
    Type: Application
    Filed: August 1, 2017
    Publication date: November 23, 2017
    Inventors: Robert Graham Cooks, Michael Stanley Wleklinski, Thalappil Pradeep, Depanjan Sarkar
  • Publication number: 20160314956
    Abstract: The invention generally relates to mass spectrometry probes and systems for ionizing a sample. In certain embodiments, the invention provides a mass spectrometry probe including a substrate in which a portion of the substrate is coated with a material, a portion of which protrudes from the substrate.
    Type: Application
    Filed: December 22, 2014
    Publication date: October 27, 2016
    Inventors: Robert Graham Cooks, Depanjan Sarkar, Thalappil Pradeep, Rahul Narayanan