Patents by Inventor Lingappa BALAYA

Lingappa BALAYA 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 praziquantel
    Patent number: 8754215
    Abstract: The present disclosure describes a novel, cost-effective process for preparation of a 4-oxo-1,2,3,6,7,11b-hexahydro-4H-pyrazino-[2,1-a]isoquinoline derivatives. Specifically, it discloses a process for the preparation of the anthelmintic drug praziquantel through the use of a novel intermediate, 2-[(2,2-dimethoxyethyl)benzyl amino]-N-phenethylacetamide. This present disclosure also describes a novel crystalline form of 4-oxo-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinoline.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: June 17, 2014
    Assignee: Sequent Scientific Limited
    Inventors: Lingappa Balaya, Mahalinga Manjathuru, Yogeesh Derambala, Pejakala Kakrannaya Vasudeva, Thangavel Arulmoli
  • PROCESS FOR THE PREPARATION OF PRAZIQUANTEL
    Publication number: 20130289275
    Abstract: The present disclosure describes a novel, cost-effective process for preparation of a 4-oxo-1,2,3,6,7,11b-hexahydro-4H-pyrazino-[2,1-a]isoquinoline derivatives. Specifically, it discloses a process for the preparation of the anthelmintic drug praziquantel through the use of a novel intermediate, 2-[(2,2-dimethoxyethyl)benzyl amino]-N-phenethylacetamide. This present disclosure also describes a novel crystalline form of 4-oxo-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinoline.
    Type: Application
    Filed: June 12, 2013
    Publication date: October 31, 2013
    Inventors: Lingappa BALAYA, Mahalinga MANJATHURU, Yogeesh DERAMBALA, Pejakala Kakrannaya VASUDEVA, Thangavel ARULMOLI