Patents Assigned to Unichem Laboratories Limited
  • Publication number: 20220249385
    Abstract: The present disclosure provides an extended release composition of tofacitinib for oral administration, and methods of making the composition. The extended release composition employs a matrix drug core comprising tofacitinib or a pharmaceutically acceptable salt thereof and at least one release controlling polymer. The matrix drug core is surrounded by a soluble functional coating comprising at least one coating polymer and at least one pharmaceutically acceptable excipient.
    Type: Application
    Filed: March 4, 2020
    Publication date: August 11, 2022
    Applicant: Unichem Laboratories Limited
    Inventors: Dhananjay SATHE, Bijay PADHI, Ankit BAHETI, Sachin BALI
  • 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
  • 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: 10266507
    Abstract: A process for the preparation of Ranolazine (I) and its acid addition salts and the process for the preparation of compound of formula (7).
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: April 23, 2019
    Assignee: UNICHEM LABORATORIES LIMITED
    Inventors: Dhananjay G. Sathe, Dnyaneshwar V. Gawas, Sanjay Bhaskar Chowkekar, Jotirling Ramling Mali
  • 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
  • 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
  • Patent number: 10034882
    Abstract: The present invention relates to Orally Disintegrating Tablets (ODT) of Tofacitinib and its pharmaceutically acceptable salts and the process to produce the ODT. The invention further relates to ODTs comprising Tofacitinib and its pharmaceutically acceptable salts, at least one sweetening agent, at least one disintegrant and optionally other excipients. The weight of the Orally Disintegrating tablets is 200 mg or less. The invention further relates to Orally Disintegrating Tablets of Tofacitinib Citrate.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: July 31, 2018
    Assignee: Unichem Laboratories Limited
    Inventors: Saurabh Gupta, Saiesh P. Phaldesai, Nsk. Senthil Kumar, Milind Vinayak Sathe
  • Patent number: 9951012
    Abstract: The present invention 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 invention is also related to novel intermediates: wherein R, R? and X are as described in the specification.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: April 24, 2018
    Assignee: UNICHEM LABORATORIES LIMITED
    Inventors: Dhananjay G. Sathe, Arijit Das, Yogesh Subhash Patil, Nilesh L. Bonde, Ankush Sampat Kekan
  • Patent number: 9908881
    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 30, 2016
    Date of Patent: March 6, 2018
    Assignee: Unichem Laboratories Limited
    Inventors: Dhananjay G Sathe, Arijit Das, Yashwant Surve, Ramdas N. Ahire
  • Patent number: 9902717
    Abstract: The present invention relates to a process for the preparation of Azilsartan Medoxomil Potassium. The invention further relates to novel highly crystalline polymorph of Azilsartan Medoxomil Potassium and composition comprising it. The invention provides thermostable highly crystalline polymorph of Azilsartan Medoxomil Potassium and process to produce a composition comprising the novel highly crystalline polymorph of Azilsartan Medoxomil Potassium.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: February 27, 2018
    Assignee: UNICHEM LABORATORIES LIMITED
    Inventors: Dhananjay G. Sathe, Dnyaneshwar V. Gawas, Sashikant D. Metkar
  • Publication number: 20180044307
    Abstract: A process for the preparation of Ranolazine (I) and its acid addition salts and the process for the preparation of compound of formula (7).
    Type: Application
    Filed: March 4, 2016
    Publication date: February 15, 2018
    Applicant: UNICHEM LABORATORIES LIMITED
    Inventors: Dhananjay G. SATHE, Dnyaneshwar V. GAWAS, Sanjay Bhaskar KEKAR, Jotirling Ramling MALI
  • Publication number: 20170304307
    Abstract: The present invention relates to Orally Disintegrating Tablets (ODT) of Tofacitinib and its pharmaceutically acceptable salts and the process to produce the ODT. The invention further relates to ODTs comprising Tofacitinib and its pharmaceutically acceptable salts, at least one sweetening agent, at least one disintegrant and optionally other excipients. The weight of the Orally Disintegrating tablets is 200 mg or less. The invention further relates to Orally Disintegrating Tablets of Tofacitinib Citrate.
    Type: Application
    Filed: June 24, 2016
    Publication date: October 26, 2017
    Applicant: Unichem Laboratories Limited
    Inventors: Saurabh Gupta, Saiesh P. Phaldesai, NSK. Senthil Kumar, Milind Vinayak Sathe
  • Publication number: 20170197951
    Abstract: The present invention relates to a process for the preparation of Azilsartan Medoxomil Potassium. The invention further relates to novel highly crystalline polymorph of Azilsartan Medoxomil Potassium and composition comprising it. The invention provides thermostable highly crystalline polymorph of Azilsartan Medoxomil Potassium and process to produce a composition comprising the novel highly crystalline polymorph of Azilsartan Medoxomil Potassium.
    Type: Application
    Filed: March 21, 2016
    Publication date: July 13, 2017
    Applicant: Unichem Laboratories Limited
    Inventors: Dhananjay G. Sathe, Dnyaneshwar V. Gawas, Sashikant D. Metkar