Patents by Inventor Chetan Patil

Chetan Patil 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).

  • Solid state forms of Venetoclax and its process for the preparation there of
    Patent number: 11613540
    Abstract: The present invention provides solid state forms of Venetoclax, particularly relates to novel alkali metal salt and/or DMF solvate form of Venetoclax or its salt. The present invention also relates to process for the preparation Venetoclax by using the said solid state form of Venetoclax.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: March 28, 2023
    Assignee: Alembic Pharmaceuticals Limited
    Inventors: Vittal Tvsk, Dinesh Chudasama, Saisuryanarayana Donthukurthi, Tejas Shah, Chetan Patil, Mahendar Velisoju, Mahender Rao Siripragada
  • Solid State Forms Of Venetoclax And Its Process For The Preparation There Of
    Publication number: 20210130350
    Abstract: The present invention provides solid state forms of Venetoclax, particularly relates to novel alkali metal salt and/or DMF solvate form of Venetoclax or its salt. The present invention also relates to process for the preparation Venetoclax by using the said solid state form of Venetoclax.
    Type: Application
    Filed: January 5, 2021
    Publication date: May 6, 2021
    Applicant: Alembic Pharmaceuticals Limited
    Inventors: Vittal Tvsk, Dinesh Chudasama, Saisuryanarayana Donthukurthi, Tejas Shah, Chetan Patil, Mahendar Velisoju, Mahender Rao Siripragada
  • Solid state forms of venetoclax and its process for the preparation there of
    Patent number: 10934289
    Abstract: The present invention provides solid state forms of Venetoclax, particularly relates to novel alkali metal salt and/or DMF solvate form of Venetoclax or its salt. The present invention also relates to process for the preparation Venetoclax by using the said solid state form of Venetoclax.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: March 2, 2021
    Assignee: Alembic Pharmaceuticals Limited
    Inventors: Vittal Tvsk, Dinesh Chudasama, Saisuryanarayana Donthukurthi, Tejas Shah, Chetan Patil, Mahendar Velisoju, Mahender Rao Siripragada
  • Solid State Forms Of Venetoclax And Its Process For The Preparation There Of
    Publication number: 20200354361
    Abstract: The present invention provides solid state forms of Venetoclax, particularly relates to novel alkali metal salt and/or DMF solvate form of Venetoclax or its salt. The present invention also relates to process for the preparation Venetoclax by using the said solid state form of Venetoclax.
    Type: Application
    Filed: January 29, 2019
    Publication date: November 12, 2020
    Applicant: Alembic Pharmaceuticals Limited
    Inventors: Vittal Tvsk, Dinesh Chudasama, Saisuryanarayana Donthukurthi, Tejas Shah, Chetan Patil, Mahendar Velisoju, Mahender Rao Siripragada
  • Polymorph of Riociguat and its process for the preparation
    Patent number: 10414766
    Abstract: The present invention relates to novel polymorph of riociguat and process for preparing the polymorph. The present invention also relates to the improved process for the preparation of riociguat.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: September 17, 2019
    Assignee: ALEMBIC PHARMACEUTICALS LIMITED
    Inventors: Mahender Rao Siripragada, Mahendar Velisoju, Tejas Shah, Chetan Patil, Kalpesh Jadav, Ashvinkumar Bhuva, Saisuryanaraya Donthukurthi
  • NOVEL POLYMORPH OF RIOCIGUAT AND ITS PROCESS FOR THE PREPARATION
    Publication number: 20190002461
    Abstract: The present invention relates to novel polymorph of riociguat and process for preparing the polymorph. The present invention also relates to the improved process for the preparation of riociguat.
    Type: Application
    Filed: December 12, 2016
    Publication date: January 3, 2019
    Inventors: Mahender Rao SIRIPRAGADA, Mahendar VELISOJU, Tejas SHAH, Chetan PATIL, Kalpesh JADAV, Ashvinkumar BHUVA, Saisuryanaraya DONTHUKURTHI
  • Reference markers for fesoterodine fumarate
    Patent number: 9440910
    Abstract: The present invention relates to the new impurities of Fesoterodine, Fesoterodine symmetric dimer impurity and asymmetric dimer impurity, process for preparing and isolating thereof. The invention also deals with analytical standards and analytical methods used for the control of the production process and final quality of Fesoterodine.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: September 13, 2016
    Assignee: Alembic Pharmaceuticals Limited
    Inventors: Venkatraman Jayaraman, Sundara Kalyana Balaji, Samir Patel, Thakor Indrajit, Viral Parekh, Mahesh Ladani, Chetan Patil, Ronak Patel, Darshan Parmar
  • Process for preparing fesoterodine
    Patent number: 9085509
    Abstract: The present invention relates to an improved process for the preparation of Fesoterodine and pharmaceutically acceptable salts thereof. The present invention particularly relates to a process for the preparation of fesoterodine and pharmaceutically acceptable salts thereof which involves use and preparation of R(+)benzyl tolterodine and fumarate salt of R(+)-[4-benzyloxy-3-(3-diisopropylamino-1-phenylpropyl)-phenyl]-methanol.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: July 21, 2015
    Assignee: ALEMBIC PHARMACEUTICALS LIMITED
    Inventors: Jayaraman Venkat Raman, Samir Patel, Indrajit Thakor, Mahesh Ladani, Chetan Patil, Ronak Patel, Prashant Raval, Viral Parekh, Hiral Shah
  • THE NOVEL REFERENCE MARKERS FOR FESOTERODINE FUMARATE
    Publication number: 20150175526
    Abstract: The present invention relates to the new impurities of Fesoterodine, Fesoterodine symmetric dimer impurity and asymmetric dimer impurity, process for preparing and isolating thereof. The invention also deals with analytical standards and analytical methods used for the control of the production process and final quality of Fesoterodine.
    Type: Application
    Filed: January 8, 2013
    Publication date: June 25, 2015
    Applicant: Alembic Pharmaceuticals Limited
    Inventors: Venkatraman Jayaraman, Sundara Kalyana Balaji, Samir Patel, Thakor Indrajit, Viral Parekh, Mahesh Ladani, Chetan Patil, Ronak Patel, Darshan Parmar, Venkatraman Jayaraman, Sundara Kalyana Balaji, Samir Patel, Thakor Indrajit, Viral Parekh, Mahesh Ladani, Chetan Patil, Ronak Patel, Darshan Parmar
  • NOVEL REFERENCE MARKERS FOR FESOTERODINE FUMARATE
    Publication number: 20140374284
    Abstract: The present invention relates to the new impurities of Fesoterodine, Fesoterodine symmetric dimer impurity and asymmetric dimer impurity, process for preparing and isolating thereof. The invention also deals with analytical standards and analytical methods used for the control of the production process and final quality of Fesoterodine.
    Type: Application
    Filed: January 8, 2013
    Publication date: December 25, 2014
    Inventors: Venkatraman Jayaraman, Sundara Kalyana Balaji, Samir Patel, Thakor Indrajit, Viral Parekh, Mahesh Ladani, Chetan Patil, Ronak Patel, Darshan Parmar
  • PROCESS FOR THE PREPARATION OF FESOTERODINE
    Publication number: 20140378699
    Abstract: The present invention relates to an improved process for the preparation of Fesoterodine and pharmaceutically acceptable salts thereof. The present invention particularly relates to a process for the preparation of Fesoterodine from O-benzyl tolterodine.
    Type: Application
    Filed: January 4, 2013
    Publication date: December 25, 2014
    Inventors: Venkat Raman Jayaraman, Samir Patel, Indrajit Thakor, Viral Maheshbhai Parekh, Mahesh Ladani, Chetan Patil, Ronak Patel, Prashant Raval
  • PROCESS FOR PREPARING FESOTERODINE
    Publication number: 20140039216
    Abstract: The present invention relates to an improved process for the preparation of Fesoterodine and pharmaceutically acceptable salts thereof. The present invention particularly relates to a process for the preparation of fesoterodine and pharmaceutically acceptable salts thereof which involves use and preparation of R(+)benzyl tolterodine and fumarate salt of R(+)-[4-benzyloxy-3-(3-diisopropylamino-1-phenylpropyl)-phenyl]-methanol.
    Type: Application
    Filed: November 11, 2011
    Publication date: February 6, 2014
    Applicant: ALEMBIC PHARMACEUTICALS LIMITED
    Inventors: Jayaraman Venkat Raman, Samir Patel, Indrajit Thakor, Mahesh Ladani, Chetan Patil, Ronak Patel, Prashant Raval, Viral Parekh, Hiral Shah
  • Common detector for combined raman spectroscopy-optical coherence tomography
    Patent number: 8553219
    Abstract: An apparatus includes first and second light sources for respectively generating broadband and monochromatic lights, a beamsplitter optically coupled to the first light source for splitting the broadband light into a reference light and a sample light, a reference arm optically coupled to the beamsplitter for receiving the reference light and returning the received reference light into the beamsplitter, a sample arm optically coupled to the beamsplitter and the second light source for combining the sample and monochromatic lights, delivering the combined light to the target of interest, collecting a backscattering light and a Raman scattering light generated from interaction of the combined light with the target of interest, returning the backscattering light into the beamsplitter so as to generate an interference signal between the returned backscattering light and the returned reference light in the beamsplitter, and directing the Raman scattering light in an output optical path.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: October 8, 2013
    Assignees: Vanderbilt University, Academisch Medisch Centrum Bu de Universiteit van Amsterdam
    Inventors: Chetan A. Patil, Anita Mahadevan-Jansen, Antonius Gerardus Johannes Maria Van Leeuwen, Jeroen Kalkman
  • COMMON DETECTOR FOR COMBINED RAMAN SPECTROSCOPY-OPTICAL COHERENCE TOMOGRAPHY
    Publication number: 20120188538
    Abstract: In one aspect of the present invention, an apparatus includes a first light source for generating a broadband light, and a second light source for generating a monochromatic light, a beamsplitter optically coupled to the first light source for receiving the broadband light and splitting the received broadband light into a reference light and a sample light, a reference arm optically coupled to the beamsplitter for receiving the reference light and returning the received reference light into the beamsplitter, and a sample arm optically coupled to the beamsplitter and the second light source for combining the sample light and the monochromatic light, delivering the combined sample and monochromatic light to the target of interest, collecting a backscattering light and a Raman scattering light that are generated from interaction of the sample light and the monochromatic light with the target of interest, respectively, returning the backscattering light into the beamsplitter so as to generate an interference sign
    Type: Application
    Filed: January 24, 2011
    Publication date: July 26, 2012
    Applicant: VANDERBILT UNIVERSITY
    Inventors: Chetan A. Patil, Anita Mahadevan-Jansen, Antonius Gerardus Johannes Maria van Leeuwen, Jeroen Kalkman
  • Combined raman spectroscopy-optical coherence tomography (RS-OCT) system and applications of the same
    Patent number: 7508524
    Abstract: An apparatus for evaluating a target of interest of a living subject.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: March 24, 2009
    Assignee: Vanderbilt University
    Inventors: Anita Mahadevan-Jansen, Ton Van Leeuwen, Chetan A. Patil
  • COMBINED RAMAN SPECTROSCOPY-OPTICAL COHERENCE TOMOGRAPHY (RS-OCT) SYSTEM AND APPLICATIONS OF THE SAME
    Publication number: 20090021724
    Abstract: An apparatus for evaluating a target of interest of a living subject.
    Type: Application
    Filed: July 20, 2007
    Publication date: January 22, 2009
    Applicant: Vanderbilt University
    Inventors: Anita MAHADEVAN-JANSEN, Ton Van Leeuwen, Chetan A. Patil