Patents by Inventor Amitava Das

Amitava Das 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: 11319331
    Abstract: The present disclosure shows a molecular probe SF-1 which is useful for selective detection of hypochlorous acid (HOCl) over other reactive oxygen species (ROS) and a process for the preparation thereof.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: May 3, 2022
    Assignee: Council of Scientific & Industrial Research
    Inventors: Firoj Ali, Sunil Babanrao Aute, Anila Hoskere Ashok, Suman Pal, Amitava Das
  • Publication number: 20210402011
    Abstract: The present invention disclosed a compound of formula (I), process for preparation thereof and use of compound of formula (I) for detecting HNO in biological systems.
    Type: Application
    Filed: December 5, 2017
    Publication date: December 30, 2021
    Inventors: Amitava DAS, Firoj ALI, Anila Hoskere ASHOK, Samit DHATTOPABHYAY, Nandaraj TAYE
  • Patent number: 10730891
    Abstract: The present invention relates to a compound (L) for selective determination of free cysteine and a process for the preparation thereof. wherein R1 is selected from benzene, toluene, naphthalene and pyrene.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: August 4, 2020
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Amitava Das, Firoj Ali, Upendar Reddy Gandra, Anila Hoskere Ashok, Samit Chattopadhyay, Nandaraj Taye
  • Publication number: 20200102330
    Abstract: The present disclosure shows a molecular probe SF-1 which is useful for selective detection of hypochlorous acid (HOCl) over other reactive oxygen species (ROS) and a process for the preparation thereof.
    Type: Application
    Filed: May 8, 2018
    Publication date: April 2, 2020
    Inventors: Firoj Ali, Sunil Babanrao Aute, Anila Hoskere Ashok, Suman Pal, Amitava Das
  • Patent number: 10298222
    Abstract: A HEMT cell includes two or more gallium nitride (“GaN”) high-electron-mobility transistor (“HEMT”) devices electrically connected in series with each other. The HEMT cell includes a HEMT cell drain, a HEMT cell source and a HEMT cell gate. The HEMT cell drain connects with the drain of a first GaN HEMT device in the series. The HEMT cell source connects with the source of a last GaN HEMT device in the series. The HEMT cell gate connects to a first two-dimensional electron gas (“2DEG”) gate bias resistor that connects with the gate of the first GaN HEMT device. The HEMT cell gate connects to a second 2DEG gate bias resistor that connects with the gate of the second GaN HEMT device. The first and second 2DEG gate bias resistors are located in a 2DEG layer of the HEMT cell. A multi-throw RF switch is also disclosed.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: May 21, 2019
    Assignee: Tagore Technology, Inc.
    Inventors: Manish N. Shah, Amitava Das
  • Patent number: 10155776
    Abstract: The Invention relates to a novel receptor molecule for estimation of amino acids based on florescence enhancements. Particularly, the invention relates to a novel Cu (II)-complex as a turn-on luminescence probe for selective detection of cysteine and histidine in pure aqueous environment and in biological sample as well as for detection of cyanide ions among various anions under physiological conditions.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: December 18, 2018
    Assignee: Council of Scientific and Industrial Research
    Inventors: Amitava Das, Samit Chattopadhyay, Upendar Reddy Gandra, Hridesh Agarwalla
  • Publication number: 20180354975
    Abstract: The present invention relates to a compound (L) for selective determination of free cysteine and a process for the preparation thereof. wherein R1 is selected from benzene, toluene, naphthalene and pyrene.
    Type: Application
    Filed: July 29, 2016
    Publication date: December 13, 2018
    Inventors: Amitava DAS, Firoj Ali, Upendar Reddy GANDRA, Anila Hoskere ASHOK, Samit CHATTOPADHYAY, Nandaraj TAYE
  • Patent number: 10030002
    Abstract: The present invention relates to a coumarin derivative of Formula (L) for detection of cysteine and process for preparation thereof. The present invention further relates to a process of detection of cysteine residues present in protein as well as the cysteine released by the enzymatic action of aminoacylase 1 by using coumarin derivative of Formula (L).
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: July 24, 2018
    Assignee: Council of Scientific & Industrial Research
    Inventors: Amitava Das, Anila Ashoka Hoskere, Upendar Reddy Gandra, Firoj Ali
  • Publication number: 20180109250
    Abstract: A HEMT cell includes two or more gallium nitride (“GaN”) high-electron-mobility transistor (“HEMT”) devices electrically connected in series with each other. The HEMT cell includes a HEMT cell drain, a HEMT cell source and a HEMT cell gate. The HEMT cell drain connects with the drain of a first GaN HEMT device in the series. The HEMT cell source connects with the source of a last GaN HEMT device in the series. The HEMT cell gate connects to a first two-dimensional electron gas (“2DEG”) gate bias resistor that connects with the gate of the first GaN HEMT device. The HEMT cell gate connects to a second 2DEG gate bias resistor that connects with the gate of the second GaN HEMT device. The first and second 2DEG gate bias resistors are located in a 2DEG layer of the HEMT cell. A multi-throw RF switch is also disclosed.
    Type: Application
    Filed: December 15, 2017
    Publication date: April 19, 2018
    Inventors: Manish N. SHAH, Amitava DAS
  • Publication number: 20180093963
    Abstract: The present invention relates to a coumarin derivative of Formula (L) for detection of cysteine and process for preparation thereof. The present invention further relates to a process of detection of cysteine residues present in protein as well as the cysteine released by the enzymatic action of aminoacylase 1 by using coumarin derivative of Formula (L).
    Type: Application
    Filed: April 13, 2016
    Publication date: April 5, 2018
    Inventors: Amitava DAS, Anila Ashoka HOSKERE, Upendar Reddy GANDRA, Firoj ALI
  • Patent number: 9925298
    Abstract: The present invention relates to the synthesis of porous polymer scaffold from polyethyleneglycol-polyurethane having castor oil linkages under controlled conditions and their use as stem cell delivery vehicles thereby accelerating the tissue regeneration process. The present invention further studies the biodegradability, stability and biocompatibility of porous polymer scaffolds in various cell lines and primary bone marrow stem cells. Particularly the present invention further relates to the physio-chemical characterization of the porous polymer scaffolds.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: March 27, 2018
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Amitava Das, Pratyay Basak, Ramasatyaveni Geesala, Nimai Bar, Neha Raghuvir Dhoke, Komal Kaushik
  • Patent number: 9887637
    Abstract: An adjustable threshold power limiter circuit. A number of switching elements are included with at least a first and second switching element that each has a first terminal, a second terminal, and an insulated gate terminal. The switching elements forming a conductive path between its first and second terminals based on a voltage between its insulated gate terminal and one of its first or terminal exceeding a threshold. A conductive path is present with a series connection of the switching elements between a signal input and a reference potential. A controller is included and is electrically coupled to each insulated gate terminal of each switching element to independently provide to each insulated gate terminal either an on voltage or an off voltage.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: February 6, 2018
    Assignee: Tagore Technology, Inc.
    Inventors: Manish N. Shah, Sudhir Gouni, Amitava Das
  • Patent number: 9823232
    Abstract: The invention disclosed herein relates to novel ligands (Lx) of Formula-I for selective detection of Cr (III) in pure aqueous medium and industrially viable process for the preparation thereof. Further the invention provides the process of selective detection of Cr (III) by fluorimetry using novel ligands of Formula-I. The invention also discloses a method of solubilizing novel ligands of formula-I in pure aqueous medium with the aid of non-ionic surfactant. The invention discloses a method of selective detection of Cr (III) using novel ligands of Formula-I.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: November 21, 2017
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Amitava Das, Firoj Ali, Sukdeb Saha
  • Publication number: 20170240568
    Abstract: The Invention relates to a novel receptor molecule for estimation of amino acids based on florescence enhancements. Particularly, the invention relates to a novel Cu (II)-complex as a turn-on luminescence probe for selective detection of cysteine and histidine in pure aqueous environment and in biological sample as well as for detection of cyanide ions among various anions under physiological conditions.
    Type: Application
    Filed: June 18, 2015
    Publication date: August 24, 2017
    Inventors: Amitava Das, Samit Chattopadhyay, Upendar Reddy Gandra, Hridesh Agarwalla
  • Publication number: 20170112960
    Abstract: The present invention relates to the synthesis of porous polymer scaffold from polyethyleneglycol-polyurethane having castor oil linkages under controlled conditions and their use as stem cell delivery vehicles thereby accelerating the tissue regeneration process. The present invention further studies the biodegradability, stability and biocompatibility of porous polymer scaffolds in varios cell lines and primary bone marrow stem cells. Particularly the present invention further relates to the physio-chemical characterization of the porous polymer scaffolds.
    Type: Application
    Filed: October 27, 2016
    Publication date: April 27, 2017
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Amitava DAS, Pratyay BASAK, Ramasatyaveni GEESALA, Nimai BAR, Neha Raghuvir DHOKE, Komal KAUSHIK
  • Patent number: 9548731
    Abstract: A HEMT cell includes two or more gallium nitride (“GaN”) high-electron-mobility transistor (“HEMT”) devices electrically connected in series with each other. The HEMT cell includes a HEMT cell drain, a HEMT cell source, and a HEMT cell gate. The HEMT cell drain connects with the drain of a first GaN HEMT device in the series. The HEMT cell source connects with the source of a last GaN HEMT device in the series. The HEMT cell gate connects to a first two-dimensional electron gas (“2DEG”) gate bias resistor that connects with the gate of the first GaN HEMT device. The HEMT cell gate connects to a second 2DEG gate bias resistor that connects with the gate of the second GaN HEMT device. The first and second 2DEG gate bias resistors are located in a 2DEG layer of the HEMT cell. A multi-throw RF switch is also disclosed.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: January 17, 2017
    Assignee: Tagore Technology, Inc.
    Inventors: Manish N. Shah, Amitava Das
  • Publication number: 20160373106
    Abstract: A HEMT cell includes two or more gallium nitride (“GaN”) high-electron-mobility transistor (“HEMT”) devices electrically connected in series with each other. The HEMT cell includes a HEMT cell drain, a HEMT cell source, and a HEMT cell gate. The HEMT cell drain connects with the drain of a first GaN HEMT device in the series. The HEMT cell source connects with the source of a last GaN HEMT device in the series. The HEMT cell gate connects to a first two-dimensional electron gas (“2DEG”) gate bias resistor that connects with the gate of the first GaN HEMT device. The HEMT cell gate connects to a second 2DEG gate bias resistor that connects with the gate of the second GaN HEMT device. The first and second 2DEG gate bias resistors are located in a 2DEG layer of the HEMT cell. A multi-throw RF switch is also disclosed.
    Type: Application
    Filed: June 16, 2016
    Publication date: December 22, 2016
    Inventors: Manish N. SHAH, Amitava DAS
  • Patent number: 9505794
    Abstract: The present invention discloses novel Ruthenium (II) polypyridyl complexes, preparation and its application as DNA imaging agents.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: November 29, 2016
    Assignee: Council of Scientific and Industrial Research
    Inventors: Amitava Das, Samit Chattopadhyay, Vadde Ramu, Nandaraj Taye
  • Publication number: 20160252488
    Abstract: The invention disclosed herein relates to novel ligands (Lx) of Formula-I for selective detection of Cr (III) in pure aqueous medium and industrially viable process for the preparation thereof. Further the invention provides the process of selective detection of Cr (III) by fluorimetry using novel ligands of Formula-I. The invention also discloses a method of solubilizing novel ligands of formula-I in pure aqueous medium with the aid of non-ionic surfactant. The invention discloses a method of selective detection of Cr (III) using novel ligands of Formula-I.
    Type: Application
    Filed: October 8, 2014
    Publication date: September 1, 2016
    Inventors: Amitava Das, Firoj Ali, Sukdeb Saha
  • Publication number: 20160102357
    Abstract: The present invention discloses novel Ruthenium (II) polypyridyl complexes, preparation and its application as DNA imaging agents.
    Type: Application
    Filed: October 8, 2015
    Publication date: April 14, 2016
    Inventors: Amitava Das, Samit Chattopadhyay, Vadde Ramu, Nandaraj Taye