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).
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Patent number: 11928438Abstract: 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: GrantFiled: July 7, 2023Date of Patent: March 12, 2024Assignee: Northern Trust CorporationInventors: Arijit Das, Justin Chapman
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Patent number: 11891384Abstract: 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: GrantFiled: May 3, 2021Date of Patent: February 6, 2024Assignee: Unichem Laboratories LtdInventors: Dhananjay G. Sathe, Arijit Das, Sanjay Raikar, Yashwant S. Surve, Bhushan S. Pandit
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Patent number: 11641280Abstract: 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: GrantFiled: June 21, 2022Date of Patent: May 2, 2023Assignee: Northern Trust CorporationInventors: Justin Chapman, Zabrina Smith, Arijit Das
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Publication number: 20220185810Abstract: 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: ApplicationFiled: March 28, 2020Publication date: June 16, 2022Inventors: Dhananjay G. Sathe, Arijit Das, Bhavesh Patel, Eknath Kshirsagar, Dipak Patil, Ashok Matale
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Patent number: 11341488Abstract: 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: GrantFiled: December 18, 2017Date of Patent: May 24, 2022Assignee: Northern Trust CorporationInventors: Justin Chapman, Andrew Czupek, Andrew Monks, Anthony Stevens, Arijit Das, Christopher Price, Wayne Hannaway, Zabrina Smith
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Patent number: 11321681Abstract: 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: GrantFiled: December 18, 2017Date of Patent: May 3, 2022Assignee: Northern Trust CorporationInventors: Justin Chapman, Andrew Czupek, Andrew Monks, Anthony Stevens, Arijit Das, Christopher Price, Wayne Hannaway, Zabrina Smith
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Patent number: 11128467Abstract: 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: GrantFiled: June 4, 2018Date of Patent: September 21, 2021Assignee: Northern Trust CorporationInventors: Justin Chapman, Andrew Czupek, Andrew Monks, Anthony Stevens, Arijit Das, Christopher Price, Wayne Hannaway, Zabrina Smith
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Patent number: 11034683Abstract: 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: GrantFiled: December 21, 2017Date of Patent: June 15, 2021Assignee: UNICHEM LABORATORIES LTDInventors: Dhananjay G. Sathe, Arijit Das, Sanjay Raikar, Yashwant S. Surve, Bhushan S. Pandit
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Patent number: 10919855Abstract: 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: GrantFiled: April 27, 2018Date of Patent: February 16, 2021Assignee: UNICHEM LABORATORIES LTDInventors: Dhananjay G. Sathe, Arijit Das, Bhavesh B. Patel, Dipak Subhash Patil, Ashok Govind Matale, Eknath Kamalakar Kshirsagar
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Patent number: 10836730Abstract: 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: GrantFiled: February 21, 2018Date of Patent: November 17, 2020Assignee: UNICHEM LABORATORIES LTD.Inventors: Dhananjay G. Sathe, Arijit Das, Vishal Kulkarni, Tushar Patil, Yogesh Patil, Prafulla Nagawade
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Patent number: 10829450Abstract: 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: GrantFiled: January 11, 2018Date of Patent: November 10, 2020Assignee: UNICHEM LABORATORIES LIMITEDInventors: Dhananjay G. Sathe, Arijit Das, Yogesh Subhash Patil, Nilesh L. Bonde, Ankush Sampat Kekan
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Publication number: 20200181085Abstract: 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: ApplicationFiled: April 27, 2018Publication date: June 11, 2020Inventors: Dhananjay G. Sathe, Arijit Das, Bhavesh B. Patel, Dipak Subhash Patil, Ashok Govind Matale, Eknath Kamalakar Kshirsagar
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Patent number: 10414720Abstract: 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: GrantFiled: June 12, 2017Date of Patent: September 17, 2019Assignee: Unichem Laboratories Ltd.Inventors: Dhananjay G. Sathe, Arijit Das, Sanjay Raikar, Rahul Bhagwatkar, Ramdas Ahire
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Patent number: 10336753Abstract: 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: GrantFiled: August 22, 2018Date of Patent: July 2, 2019Assignee: Unichem Laboratories LimitedInventors: Dhananjay G. Sathe, Arijit Das, Yashwant Surve, Ramdas N. Ahire
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Patent number: 10208036Abstract: 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: GrantFiled: September 6, 2017Date of Patent: February 19, 2019Assignee: Unichem Laboratories LimitedInventors: Dhananjay G. Sathe, Arijit Das, Yashwant Surve, Ramdas N. Ahire
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Publication number: 20180362528Abstract: 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: ApplicationFiled: August 22, 2018Publication date: December 20, 2018Inventors: Dhananjay G. Sathe, Arijit Das, Yashwant Surve, Ramdas N. Ahire
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Patent number: 10158479Abstract: 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: GrantFiled: December 18, 2017Date of Patent: December 18, 2018Assignee: Northern Trust CorporationInventors: Justin Chapman, Andrew Czupek, Andrew Monks, Anthony Stevens, Arijit Das, Christopher Price, Wayne Hannaway, Zabrina Smith
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Patent number: 10146947Abstract: 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: GrantFiled: May 17, 2018Date of Patent: December 4, 2018Assignee: Northern Trust CorporationInventors: Justin Chapman, Andrew Czupek, Andrew Monks, Anthony Stevens, Arijit Das, Wayne Hannaway, Zabrina Smith
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Patent number: 10118924Abstract: 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: GrantFiled: September 6, 2017Date of Patent: November 6, 2018Assignee: Unichem Laboratories LimitedInventors: Dhananjay G. Sathe, Arijit Das, Yashwant Surve, Ramdas N. Ahire
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Publication number: 20180225660Abstract: 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: ApplicationFiled: December 18, 2017Publication date: August 9, 2018Inventors: Justin Chapman, Andrew Czupek, Andrew Monks, Anthony Stevens, Arijit Das, Christopher Price, Wayne HANNAWAY, Zabrina SMITH