Patents by Inventor Arijit Das

Arijit 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: 11928438
    Abstract: This disclosure enables various computing technologies for smart contracts to be audited in ways that improve on conventional auditing approaches mentioned above. These technologies improve functioning of computers by enabling large language models to review bytecodes executable on distributed ledgers to determine whether those bytecodes enable smart contracts on those distributed ledgers and then acting accordingly.
    Type: Grant
    Filed: July 7, 2023
    Date of Patent: March 12, 2024
    Assignee: Northern Trust Corporation
    Inventors: Arijit Das, Justin Chapman
  • Patent number: 11891384
    Abstract: The present invention relates to the novel key intermediate, 4-{4-[(SS)-(Aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]-phenyl}-morpholin-3-one perchlorate, m the synthesis of rivaroxaban. The invention further relates to the crystalline form of novel intermediate, the process to prepare the novel intermediate and method of preparing rivaroxaban using this novel intermediate. The invention provides an improved and efficient process for preparation of Rivaroxaban.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: February 6, 2024
    Assignee: Unichem Laboratories Ltd
    Inventors: Dhananjay G. Sathe, Arijit Das, Sanjay Raikar, Yashwant S. Surve, Bhushan S. Pandit
  • Patent number: 11641280
    Abstract: This disclosure enables a digital token with a set of asset-specific attributes, where the set of asset-specific attributes is modifiable or enabled to receive a new asset-specific attribute at least after the digital token with the set of asset-specific attributes is issued on a blockchain-based tokenization platform. Such functionality may be enabled via the digital token containing an attribute component with a set of key-value pairs populated with a subset of the set of asset-specific attributes, where the set of key-value pairs is programmed to be modified or have a new key-value pair being added thereto after the digital token is issued on the blockchain-based tokenization platform.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: May 2, 2023
    Assignee: Northern Trust Corporation
    Inventors: Justin Chapman, Zabrina Smith, Arijit Das
  • Publication number: 20220185810
    Abstract: The present invention relates to a novel process for the preparation of filgotinib or a pharmaceutically acceptable salt and intermediates thereof which avoid Suzuki coupling reaction.
    Type: Application
    Filed: March 28, 2020
    Publication date: June 16, 2022
    Inventors: Dhananjay G. Sathe, Arijit Das, Bhavesh Patel, Eknath Kshirsagar, Dipak Patil, Ashok Matale
  • Patent number: 11341488
    Abstract: Systems and methods described herein may generate a digital payment token associated with a payor-user indicating the status of a payment obligation of the payor-user. The systems and methods may generate a first block containing the digital payment token and append the first block to a blockchain. The systems and methods may receive a confirmation message from a third-party transaction server that the payor-user has either fully or partially fulfilled his or her payment obligation. Based upon the confirmation message, the systems and methods may retrieve the block containing the digital payment token and update the digital payment token to generate an updated digital payment token. The system and methods may generate a second block containing the updated digital payment token to supersede the first block and append the second block to the blockchain. The updated digital payment token may indicate that the digital payment token has expired.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: May 24, 2022
    Assignee: Northern Trust Corporation
    Inventors: Justin Chapman, Andrew Czupek, Andrew Monks, Anthony Stevens, Arijit Das, Christopher Price, Wayne Hannaway, Zabrina Smith
  • Patent number: 11321681
    Abstract: Systems and methods described herein may generate a digital payment token associated with a payor-user indicating the status of a payment obligation of the payor-user. The systems and methods may generate a first block containing the digital payment token and append the first block to a blockchain. The systems and methods may receive a confirmation message from a third-party transaction server that the payor-user has either fully or partially fulfilled his or her payment obligation. Based upon the confirmation message, the systems and methods may retrieve the block containing the digital payment token and update the digital payment token to generate an updated digital payment token. The system and methods may generate a second block containing the updated digital payment token to supersede the first block and append the second block to the blockchain. The updated digital payment token may indicate that the digital payment token has expired.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: May 3, 2022
    Assignee: Northern Trust Corporation
    Inventors: Justin Chapman, Andrew Czupek, Andrew Monks, Anthony Stevens, Arijit Das, Christopher Price, Wayne Hannaway, Zabrina Smith
  • Patent number: 11128467
    Abstract: Embodiments disclosed herein provide systems and methods for digital identity management and permission controls within distributed network nodes. A network node may receive a request to generate a new digital identity record for an entity. The network node may retrieve a template based on an entity type; and receive information, reference documents, and biometric information for the new digital identity record. The network node may associate and store the received information to the data fields in the new digital identity record, generate respective one directional cryptographic hashes of the reference documents and the biometric information, and store the hashes in the new digital identity record while storing the reference documents and biometric information in a non-blockchain repository. The network node may generate a digital identity record block for the new digital identity record, encrypt the digital identity record block, and append the encrypted block to the latest valid blockchain.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: September 21, 2021
    Assignee: Northern Trust Corporation
    Inventors: Justin Chapman, Andrew Czupek, Andrew Monks, Anthony Stevens, Arijit Das, Christopher Price, Wayne Hannaway, Zabrina Smith
  • Patent number: 11034683
    Abstract: The present invention relates to the novel key intermediate, 4-{4-[(5S)-(Aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]-phenyl}-morpholin-3-one perchlorate, in the synthesis of rivaroxaban. The invention further relates to the crystalline form of novel intermediate, the process to prepare the novel intermediate and method of preparing rivaroxaban using this novel intermediate. The invention provides an improved and efficient process for preparation of Rivaroxaban.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: June 15, 2021
    Assignee: UNICHEM LABORATORIES LTD
    Inventors: Dhananjay G. Sathe, Arijit Das, Sanjay Raikar, Yashwant S. Surve, Bhushan S. Pandit
  • Patent number: 10919855
    Abstract: An alternative and improved process for the preparation of Apremilast (Formula I) and Apremilast form B or a pharmaceutically acceptable salt thereof is provided. The novel process includes hydrogenation in acetone, Cyclization and acetylation followed by condensation in methyl isobutyl ketone (MIBK) and acetic acid mixture in specific volume ratios.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: February 16, 2021
    Assignee: UNICHEM LABORATORIES LTD
    Inventors: Dhananjay G. Sathe, Arijit Das, Bhavesh B. Patel, Dipak Subhash Patil, Ashok Govind Matale, Eknath Kamalakar Kshirsagar
  • Patent number: 10836730
    Abstract: The present invention is related to an improved process for the preparation and purification of crystalline Vortioxetine hydrobromide of Formula-I. The process according to present invention is operationally simple and suitable for industrial application which will avoid hazardous chemicals and eliminate column chromatography to get ICH quality of pharmaceutically acceptable active pharmaceutical ingredient having snow white appearance.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: November 17, 2020
    Assignee: UNICHEM LABORATORIES LTD.
    Inventors: Dhananjay G. Sathe, Arijit Das, Vishal Kulkarni, Tushar Patil, Yogesh Patil, Prafulla Nagawade
  • Patent number: 10829450
    Abstract: The present disclosure is related to an improved and efficient process for preparation of (3R,4R)-(1-benzyl-4-methylpiperidin-3-yl)-methylamine which comprises: (a) N-acylation of 3-Amino-4-methyl pyridine; (b) Quarternization of 3-Acetylamino-4-methyl pyridine using benzyl halide; (c) Partial reduction of quarternized 3-Acetylamino-4-methyl pyridine by Sodium borohydride in Methanol or water; (d) Hydrolysis of partially reduced product to 1-Benzyl-4-methylpiperidin-3-one in presence of acid; (e) Reductive amination of 1-Benzyl-4-methylpiperidin-3-one using Methanolic methylamine in presence of Titanium(IV) isopropoxide in Methanol; (f) Resolution of 1-Benzyl-4-methylpiperidin-3-yl)-methylamine using Ditoluoyl (L) tartaric acid to get (3R,4R)-(1-benzyl-4-methylpiperidin-3-yl)-methylamine. The disclosure is also related to novel intermediates: wherein R, R? and X are as described in the specification.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: November 10, 2020
    Assignee: UNICHEM LABORATORIES LIMITED
    Inventors: Dhananjay G. Sathe, Arijit Das, Yogesh Subhash Patil, Nilesh L. Bonde, Ankush Sampat Kekan
  • Publication number: 20200181085
    Abstract: An alternative and improved process for the preparation of Apremilast (Formula I) and Apremilast form B or a pharmaceutically acceptable salt thereof is provided. The novel process includes hydrogenation in acetone, Cyclization and acetylation followed by condensation in methyl isobutyl ketone (MIBK) and acetic acid mixture in specific volume ratios.
    Type: Application
    Filed: April 27, 2018
    Publication date: June 11, 2020
    Inventors: Dhananjay G. Sathe, Arijit Das, Bhavesh B. Patel, Dipak Subhash Patil, Ashok Govind Matale, Eknath Kamalakar Kshirsagar
  • Patent number: 10414720
    Abstract: The present invention relates to an improved process for the synthesis of (R)-Lacosamide in which free base of O-methyl-N-benzyl-D-Serinamide is not isolated before acylation. The process avoids the use of column chromatography and chiral resolution for the preparation of different stages of Lacosamide.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: September 17, 2019
    Assignee: Unichem Laboratories Ltd.
    Inventors: Dhananjay G. Sathe, Arijit Das, Sanjay Raikar, Rahul Bhagwatkar, Ramdas Ahire
  • Patent number: 10336753
    Abstract: The present invention refers to novel process for the preparation of Apixaban. Further, the invention also related to a process for the preparation of intermediate of Apixaban from very basic and cheap row material i.e. Aniline which is widely commercially available. The present invention provides process for preparation of Apixaban using a different sequence of synthetic steps and does not involve use of Ullmann reaction.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: July 2, 2019
    Assignee: Unichem Laboratories Limited
    Inventors: Dhananjay G. Sathe, Arijit Das, Yashwant Surve, Ramdas N. Ahire
  • Patent number: 10208036
    Abstract: The present invention refers to novel process for the preparation of Apixaban. Further, the invention also related to a process for the preparation of intermediate of Apixaban from very basic and cheap row material i.e. Aniline which is widely commercially available. The present invention provides process for preparation of Apixaban using a different sequence of synthetic steps and does not involve use of Ullmann reaction.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: February 19, 2019
    Assignee: Unichem Laboratories Limited
    Inventors: Dhananjay G. Sathe, Arijit Das, Yashwant Surve, Ramdas N. Ahire
  • Publication number: 20180362528
    Abstract: The present invention refers to novel process for the preparation of Apixaban. Further, the invention also related to a process for the preparation of intermediate of Apixaban from very basic and cheap row material i.e. Aniline which is widely commercially available. The present invention provides process for preparation of Apixaban using a different sequence of synthetic steps and does not involve use of Ullmann reaction.
    Type: Application
    Filed: August 22, 2018
    Publication date: December 20, 2018
    Inventors: Dhananjay G. Sathe, Arijit Das, Yashwant Surve, Ramdas N. Ahire
  • Patent number: 10158479
    Abstract: Embodiments disclosed herein describe systems and methods for deploying a new code block on a blockchain. In an embodiment, an application server may provide a user with a graphical user interface (GUI) with contract components and document components. The application server may generate an assembled contract text based on the user selecting the contract and document components. The application server may determine the blockchain addresses or local addresses of smart contract components corresponding to the contract components and the documents components. The application server may generate a code block including references to the addresses of the smart contracts and the document components or containing the executable code itself and may deploy the code block to the latest valid blockchain. The application server may execute the smart contract in the code block based in response to a digital event trigger.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: December 18, 2018
    Assignee: Northern Trust Corporation
    Inventors: Justin Chapman, Andrew Czupek, Andrew Monks, Anthony Stevens, Arijit Das, Christopher Price, Wayne Hannaway, Zabrina Smith
  • Patent number: 10146947
    Abstract: Embodiments disclosed herein provide systems and methods for digital meeting management within a blockchain. Before a meeting, a computer may generate a digital meeting record containing a plurality of data fields and linked to various smart contracts to capture meeting activities. During the meeting, a first smart contract may authenticate and record attendees in the digital meeting record based on biometric information received from the attendees' devices. Furthermore, a second smart contract may capture in the digital meeting record, meeting actions of each attendee, including date, time, and location associated with the meeting actions. After the meeting, a third smart contract may autopopulate post meeting documentation. After review by the attendees, the third smart contract may store a hash of the documentation to the digital meeting record and store the documentation in a repository. Once appended to the blockchain, the digital meeting record becomes an immutable record of the meeting.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: December 4, 2018
    Assignee: Northern Trust Corporation
    Inventors: Justin Chapman, Andrew Czupek, Andrew Monks, Anthony Stevens, Arijit Das, Wayne Hannaway, Zabrina Smith
  • Patent number: 10118924
    Abstract: The present invention refers to novel process for the preparation of Apixaban. Further, the invention also related to a process for the preparation of intermediate of Apixaban from very basic and cheap row material i.e. Aniline which is widely commercially available. The present invention provides process for preparation of Apixaban using a different sequence of synthetic steps and does not involve use of Ullmann reaction.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: November 6, 2018
    Assignee: Unichem Laboratories Limited
    Inventors: Dhananjay G. Sathe, Arijit Das, Yashwant Surve, Ramdas N. Ahire
  • Publication number: 20180225660
    Abstract: Systems and methods described herein may generate a digital payment token associated with a payor-user indicating the status of a payment obligation of the payor-user. The systems and methods may generate a first block containing the digital payment token and append the first block to a blockchain. The systems and methods may receive a confirmation message from a third-party transaction server that the payor-user has either fully or partially fulfilled his or her payment obligation. Based upon the confirmation message, the systems and methods may retrieve the block containing the digital payment token and update the digital payment token to generate an updated digital payment token. The system and methods may generate a second block containing the updated digital payment token to supersede the first block and append the second block to the blockchain. The updated digital payment token may indicate that the digital payment token has expired.
    Type: Application
    Filed: December 18, 2017
    Publication date: August 9, 2018
    Inventors: Justin Chapman, Andrew Czupek, Andrew Monks, Anthony Stevens, Arijit Das, Christopher Price, Wayne HANNAWAY, Zabrina SMITH