Patents by Inventor Pravinchandra Jayantilal Vankawala

Pravinchandra Jayantilal Vankawala 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).

  • PREPARATION OF METFORMIN HYDROCHLORIDE FREE FROM GENOTOXIC IMPURITY
    Publication number: 20210380529
    Abstract: A high purity metformin hydrochloride, having a purity equal to or greater than 99% by area percentage of LCMS and no detectable amount of N-Nitrosodimethylamine (NDMA), wherein the LCMS method for the determination of NDMA content in Metformin hydrochloride has a Limit of detection of 0.004 ppm and a Limit of quantification of 0.009 ppm.
    Type: Application
    Filed: June 3, 2021
    Publication date: December 9, 2021
    Inventors: Pranav Dushyantbhai PATEL, Mayurkumar Lalitbhai GURJAR, Pravinchandra Jayantilal VANKAWALA, Amit Chimanbhai PATEL
  • Aprepitant polymorph mixtures
    Patent number: 8217039
    Abstract: Intimate mixtures of aprepitant crystalline Form I and crystalline Form II, having specific weight ratios of the forms.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: July 10, 2012
    Assignees: Dr. Reddy's Laboratories Ltd., Dr. Reddy's Laboratories, Inc.
    Inventors: Vijayavitthal Thippannachar Mathad, Pravinchandra Jayantilal Vankawala, Raviram Chandrasekhar Elati, Prabhakar Macharla, Srinivas Gangula, Naveen Kumar Kolla, Ravi Kumar Komareddy, Surya Narayana Devarkonda, Subbareddy Peddireddy
  • Preparation of aprepitant
    Patent number: 8133994
    Abstract: A process for preparing aprepitant.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: March 13, 2012
    Assignees: Dr. Reddy's Laboratories Ltd., Dr. Reddy's Laboratories, Inc.
    Inventors: Pravinchandra Jayantilal Vankawala, Ravi Ram Chandrasekhar Elati, Naveen Kumar Kolla, Subrahmanyeswara Rao Chlamala, Srinivas Gangula
  • PREPARATION OF APREPITANT
    Publication number: 20110094321
    Abstract: A process for preparing aprepitant.
    Type: Application
    Filed: October 6, 2006
    Publication date: April 28, 2011
    Applicants: DR. REDDY'S LABORATORIES LIMITED, DR. REDDY'S LABORATORIES, INC.
    Inventors: Pravinchandra Jayantilal Vankawala, Ravi Ram Chandrasekhar Elati, Naveen Kumar Kolla, Subrahmanyeswara Rao Chlamala, Srinivas Gangula
  • APREPITANT POLYMORPH MIXTURES
    Publication number: 20100298327
    Abstract: Intimate mixtures of aprepitant crystalline Form I and crystalline Form II, having specific Hweight ratios of the forms.
    Type: Application
    Filed: March 29, 2007
    Publication date: November 25, 2010
    Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.
    Inventors: Vijayavitthal Thippannachar Mathad, Pravinchandra Jayantilal Vankawala, Raviram Chandrasekhar Elati, Prabhakar Macharla, Srinivas Gangula, Naveen Kumar Kolla, Ravi Kumar Komareddy, Surya Narayana Devarkonda, Subbareddy Peddireddy
  • APREPITANT COMPOSITIONS
    Publication number: 20090209541
    Abstract: Pharmaceutical compositions comprising aprepitant, wherein aprepitant solubility in aqueous media is enhanced.
    Type: Application
    Filed: June 18, 2007
    Publication date: August 20, 2009
    Applicants: Dr. Reddy's Laboratories Ltd., Dr. Reddy's Laboratories, Inc.
    Inventors: Paras Jain, Umesh V. Barabde, Ravinder Kodipyaka, Indu Bhushan, Vijayavitthal Thippannachar Mathad, Pravinchandra Jayantilal Vankawala, Kolla Naveen Kumar, Arunagiri Muthulingam, Gangula Srinivas, Chlamala Subrahmanyeswara Rao, Elati Ravi Ram Chandrasekhar