Patents by Inventor Subhash Ray

Subhash Ray 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 conversion of cyanopyridines to nicotinamides and catalyst therefor, process for preparing said catalyst
    Publication number: 20050209461
    Abstract: The present invention relates to an improved process for conversion of cyanopyridines to nicotinamides. More particularly the present invention relates to preparation of nicotinamides and isonicotinamides which finds its usage in the preparation of anti-TB drug i.e. isoniazid and as an intermediate of vitamin B12. The present invention also relates to a process for a catalyst useful for the preparation of nicotinamide and isonicotinamide.
    Type: Application
    Filed: May 9, 2005
    Publication date: September 22, 2005
    Applicant: Council of Scientific and Industrial Research
    Inventors: Subhash Ray, Baldev Singh, Hiralal Prasad, Prodyot Sarkar, Pashupati Dutta, Shyam Roy, Anup Bandyopadhyay, Raja Sen