Patents by Inventor Palash Sanphui

Palash Sanphui 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).

  • CRYSTALLINE FORMS OF DACLATASVIR DIHYDROCHLORIDE
    Publication number: 20190256498
    Abstract: The present invention provides novel crystalline form L1 of daclatasvir dihydrochloride wherein the diffraction peaks at 5.35, 6.04, 6.76, 8.65, 9.21, 10.35, 10.32, 10.75, 11.04, 11.66, 12.95, 13.56, 16.06, 18.11, 20.58, 22.18, 23.27±0.2 degree two theta in an X-ray diffraction pattern. The present invention provides novel crystalline form L2 of daclatasvir dihydrochloride wherein the diffraction peaks at 8.27, 9.54, 11.06, 13.61, 15.34, 19.01, 22.26, 23.24, 24.73, 25.35±0.2 degree two theta in an X-ray diffraction pattern. The present invention further provides process for preparation of crystalline forms L1 and L2 of daclatasvir dihydrochloride.
    Type: Application
    Filed: July 7, 2017
    Publication date: August 22, 2019
    Inventors: Palash SANPHUI, Radhakrishna Bhikaji SHIVDAVKAR, Gurvinder Pal SINGH, Purna Chandra RAY, Girij Pal SINGH, Vikas Ashokrao SADAPHAL, Lalitkumar Dilipising RAJPUT, Hemraj Mahadeorao LANDE
  • Process for preparation of apremilast and novel polymorphs thereof
    Patent number: 10377712
    Abstract: The present invention provides an improved process for preparation of an intermediate of apremilast. The present invention also provides an improved process for preparation of apremilast. This invention also provides novel polymorphs of apremilast. The present invention also provides pharmaceutical compositions of novel polymorphs of apremilast. This invention also provides a process for preparation of novel polymorphs of apremilast, which are cost-effective, robust, and viable at plant scale.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: August 13, 2019
    Assignee: LUPIN LIMITED
    Inventors: Palash Sanphui, Ananda Pundlik Sapdhare, Arunkumar Digambar Patil, Hemraj Mahadeorao Lande, Gurvinder Pal Singh, Puma Chandra Ray, Nandu Baban Bhise, Girij Pal Singh, Mithun Dasharath Surwase, Shantanu Gokuldas Varade, Govind Dnyanoba Ausekar, Radhakrishna Bhikaji Shivdavkar
  • PROCESS FOR PREPARATION OF APREMILAST AND NOVEL POLYMORPHS THEREOF
    Publication number: 20180230097
    Abstract: The present invention provides an improved process for preparation of an intermediate of apremilast. The present invention also provides an improved process for preparation of apremilast. This invention also provides novel polymorphs of apremilast. The present invention also provides pharmaceutical compositions of novel polymorphs of apremilast. This invention also provides a process for preparation of novel polymorphs of apremilast, which are cost-effective, robust, and viable at plant scale.
    Type: Application
    Filed: May 26, 2016
    Publication date: August 16, 2018
    Applicant: LUPIN LIMITED
    Inventors: Palash SANPHUI, Ananda Pundlik SAPDHARE, Arunkumar Digambar PATIL, Hemraj Mahadeorao LANDE, Gurvinder Pal SINGH, Purna Chandra RAY, Nandu Bahan BHISE, Girij Pal SINGH, Mithun Dasharath SURWASE, Shantanu Gokuldas VARADE, Govind Dnyanoba AUSEKAR, Radhakrishna Bhikaji SHIVDAVKAR
  • SALTS OF OBETICHOLIC ACID
    Publication number: 20180099991
    Abstract: The invention relates to salts of Obeticholic Acid, their amorphous and crystalline polymorphic form and processes for preparation thereof.
    Type: Application
    Filed: October 9, 2017
    Publication date: April 12, 2018
    Inventors: Palash Sanphui, Radhakrishna Bhikaji Shivdavkar, Rajesh Vyas, Nandu Baban Bhise, Girij Pal Singh