Patents by Inventor Sanjay RAIKAR

Sanjay RAIKAR 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).

  • Process for the preparation of Rivaroxaban involving novel intermediate
    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
  • PROCESS FOR THE PREPARATION OF RIVAROXABAN INVOLVING NOVEL INTERMEDIATE
    Publication number: 20210387979
    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: Application
    Filed: May 3, 2021
    Publication date: December 16, 2021
    Applicant: Unichem Laboratories Ltd
    Inventors: Dhananjay G. SATHE, Arijit DAS, SanJay RAIKAR, Yashwant S. SURVE, Bhushan S. PANDIT
  • Process for the preparation of rivaroxaban involving novel intermediate
    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
  • IMPROVED PROCESS FOR THE PREPARATION OF RIVAROXABAN INVOLVING NOVEL INTERMEDIATE
    Publication number: 20200017487
    Abstract: The present invention relates to the novel key intermediate, 4-{4-[(5 S)-(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: Application
    Filed: December 21, 2017
    Publication date: January 16, 2020
    Inventors: Dhananjay G. SATHE, Arijit DAS, Sanjay RAIKAR, Yashwant S. SURVE, Bhushan S. PANDIT
  • Process for the preparation of lacosamide
    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
  • AN IMPROVED PROCESS FOR THE PREPARATION OF LACOSAMIDE
    Publication number: 20190047944
    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: Application
    Filed: June 12, 2017
    Publication date: February 14, 2019
    Applicant: UNICHEM LABORATORIES LTD
    Inventors: Dhananjay D. SATHE, Arijit DAS, Sanjay RAIKAR, Rahul BHAGWATKAR, Ramdas AHIRE
  • 2-(1,3,4-oxadiazol-2-yl)-7-oxo-1,6-diazabicyclo[3.2.1 ]octane derivatives and their use as antibacterial agents
    Patent number: 9845323
    Abstract: Compounds of Formula (I), their preparation, and use in preventing or treating a bacterial infection are disclosed.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: December 19, 2017
    Assignee: WOCKHARDT LIMITED
    Inventors: Sanjay Raikar, Sanjay Kisan Dabhade, Laxmikant Pavase, Sachin Bhagwat, Ravindra Dattatraya Yeole, Mahesh Vithalbhai Patel
  • Nitrogen containing compounds and their use as antibacterial agents
    Patent number: 9822115
    Abstract: Compounds of Formula (I), their preparation, and use in preventing or treating a bacterial infection are disclosed.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: November 21, 2017
    Assignee: WOCKHARDT LIMITED
    Inventors: Prasad Keshav Deshpande, Satish Bhawsar, Sanjay Raikar, Sanjay Kisan Dabhade, Laxmikant Pavase, Amit Mishra, Sunil Gupta, Vikas Vitthalrao Deshmukh, Sunil Bhaginath Jadhav, Rajesh Kale, Sachin Bhagwat, Ravindra Dattatraya Yeole, Mahesh Vithalbhai Patel
  • 7-OXO-1,6-diazabicyclo[3.2.1]octane derivatives and their use as antibacterial agents
    Patent number: 9657022
    Abstract: Compounds of Formula (I), their preparation, and use in preventing or treating a bacterial infection are disclosed.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: May 23, 2017
    Assignee: WOCKHARDT LIMITED
    Inventors: Sanjay Raikar, Sanjay Kisan Dabhade, Laxmikant Pavase, Sachin Bhagwat, Ravindra Dattatraya Yeole, Mahesh Vithalbhai Patel
  • 7-OXO-1,6-DIAZABICYCLO[3.2.1 ]OCTANE DERIVATIVES AND THEIR USE AS ANTIBACTERIAL AGENTS
    Publication number: 20170044159
    Abstract: Compounds of Formula (I), their preparation, and use in preventing or treating a bacterial infection are disclosed.
    Type: Application
    Filed: January 21, 2015
    Publication date: February 16, 2017
    Inventors: Sanjay RAIKAR, Sanjay Kisan DABHADE, Laxmikant PAVASE, Sachin BHAGWAT, Ravindra Dattatraya YEOLE, Mahesh Vithalbhai PATEL
  • NITROGEN CONTAINING COMPOUNDS AND THEIR USE AS ANTIBACTERIAL AGENTS
    Publication number: 20160355516
    Abstract: Compounds of Formula (I), their preparation, and use in preventing or treating a bacterial infection are disclosed.
    Type: Application
    Filed: January 21, 2015
    Publication date: December 8, 2016
    Inventors: Prasad Keshav DESHPANDE, Satish BHAWSAR, Sanjay RAIKAR, Sanjay Kisan DABHADE, Laxmikant PAVASE, Amit MISHRA, Sunil GUPTA, Vikas DESHMUKH, Sunil Bhaginath JADHAV, Rajesh KALE, Sachin BHAGWAT, Ravindra Dattatraya YEOLE, Mahesh Vithalbhai PATEL
  • 2-(1,3,4-OXADIAZOL-2-YL)-7-OXO-1,6-DIAZABICYCLO[3.2.1 ]OCTANE DERIVATIVES AND THEIR USE AS ANTIBACTERIAL AGENTS
    Publication number: 20160297816
    Abstract: Compounds of Formula (I), their preparation, and use in preventing or treating a bacterial infection are disclosed.
    Type: Application
    Filed: January 21, 2015
    Publication date: October 13, 2016
    Applicant: WOCKHARDT LIMITED
    Inventors: Sanjay RAIKAR, Sanjay Kisan DABHADE, Laxmikant PAVASE, Sachin BHAGWAT, Ravindra Dattatraya YEOLE, Mahesh Vithalbhai PATEL