Patents by Inventor Venkata Reddy Vajrala

Venkata Reddy Vajrala 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 RASAGILINE AND SALTS THEREOF
    Publication number: 20110218360
    Abstract: The present invention relates to processes for the preparation of rasagiline mesylate. Also provided is rasagiline mesylate having 90 volume percent of the particles (D90) with sizes less than about 6 ?m and processes for the preparation thereof.
    Type: Application
    Filed: May 20, 2011
    Publication date: September 8, 2011
    Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.
    Inventors: Praveen Cherukupally, Venkata Reddy Vajrala, Vijaya Kumar Adla, Srinivasulu Rangineni, Sundaralakshmi Kanniah
  • Preparation of rivastigmine and its salts
    Patent number: 8013181
    Abstract: There are provided processes for making rivastigmine. In one embodiment, the process includes reacting S-(?)-[1-(3-hydroxyphenyl)ethyl]dimethylamine with N-ethyl-N-methyl carbamoyl chloride in the presence of an organic base to obtain a free base of rivastigmine.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: September 6, 2011
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Venkata Naga Brahmeswara Rao Mandava, Venkata Reddy Vajrala, Ganesh Varanasi, Vijay Kumar Adla, Mukund Reddy Jambula, Vijaypal Reddy Kanumathi Reddy
  • Polymorphic forms of vardenafil
    Patent number: 7977478
    Abstract: Crystalline polymorphic forms of vardenafil and vardenafil hydrochloride, and processes for preparing them.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: July 12, 2011
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Eswaraiah Sajja, Ravindar Reddy Koppera, Satyanarayana Revu, Venkata Reddy Vajrala, Vijayapal Reddy Kanumathi
  • PREPARATION OF RIVASTIGMINE AND ITS SALTS
    Publication number: 20080255383
    Abstract: There are provided processes for making rivastigmine. In one embodiment, the process includes reacting S-(?)-[1-(3-hydroxyphenyl)ethyl]dimethylamine with N-ethyl-N-methyl carbamoyl chloride in the presence of an organic base to obtain a free base of rivastigmine.
    Type: Application
    Filed: April 10, 2008
    Publication date: October 16, 2008
    Inventors: Venkata Naga Brahmeswara Rao Mandava, Venkata Reddy Vajrala, Ganesh Varanasi, Vijay Kumar Adla, Mukund Reddy Jambula, Vijaypal Reddy Kanumathi Reddy