Patents by Inventor Surendra Kalyan Nuthi

Surendra Kalyan Nuthi 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 gabapentin
    Patent number: 10399926
    Abstract: The present invention relates to an improved process for the preparation of Gabapentin. The process also relates to a new process for the preparation of 1, 1-cyclohexane diaceitic acid monoamide (CDMA), which is a key intermediate for the preparation of Gabapentin.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: September 3, 2019
    Assignee: Divi's Laboratories Ltd.
    Inventors: Satchandra Kiran Divi, Mysore AswathaNarayana Rao, Surendra Kalyan Nuthi
  • Process for the preparation of irbesartan
    Patent number: 8080670
    Abstract: The present invention relates to a process for the preparation of 2-butyl-3-[[2?-(1H-tetrazol-5-yl)[1,1?-biphenyl]-4-yl]-1,3-diazaspiro[4,4]non-1-en-4-one by reaction of the corresponding nitrile with sodium azide and piperazine or its acid salt.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: December 20, 2011
    Assignee: Divi's Laboratories, Ltd.
    Inventors: Murali Krishna Prasad Divi, Mysore Aswatha Narayana Rao, Surendra Kalyan Nuthi, Yugandar Phaniram Bandaru
  • PROCESS FOR THE PREPARATION OF IRBESARTAN
    Publication number: 20110275828
    Abstract: The present invention relates to a process for the preparation of 2-butyl-3-[[2?-(1H-tetrazol-5-yl)[1,1?-biphenyl]-4-yl]-1,3-diazaspiro[4,4]non-1-en-4-one by reaction of the corresponding nitrile with sodium azide and piperazine or its acid salt.
    Type: Application
    Filed: June 21, 2010
    Publication date: November 10, 2011
    Applicant: DIVI'S LABORATORIES LTD.
    Inventors: Murali Krishna Prasad DIVI, Mysore Aswatha Narayana RAO, Surendra Kalyan NUTHI, Yugandar Phaniram BANDARU