Patents by Inventor Valivarthi Vsv Prasad

Valivarthi Vsv Prasad 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).

  • NOVEL CRYSTALLINE FORMS OF ATOVAQUONE
    Publication number: 20100152302
    Abstract: The present invention relates to two novel and stable crystalline forms of atovaquone, to processes for their preparation and to pharmaceutical compositions comprising them. The present invention also provides crystalline particles of atovaquone having a specific surface area of from about 0.7 m2/g to about 4 m2/g, methods for the manufacture of said crystalline particles and pharmaceutical compositions comprising said crystalline particles. The present invention further provides an improved and commercially viable process for preparation of atovaquone substantially free of its undesired isomeric impurity, namely cis-2-[4-(4-chlorophenyl)cyclohexyl]-3-hydroxy-1,4-naphthoquinone.
    Type: Application
    Filed: June 26, 2007
    Publication date: June 17, 2010
    Applicant: HETERO DRUGS LIMITED
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Rapolu Raji Reddy, Dasari Muraldhara Reddy, Valivarthi Vsv Prasad