Patents by Inventor Narayanan Sankarasubbier

Narayanan Sankarasubbier 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 preparing alkylated dihydroxybenzene
    Patent number: 7112705
    Abstract: The present invention relates to a process for the preparation of alkylated dihydroxybenzene by alkylating dihydroxy benzene with tertiary butyl alcohol in the presence of a solid acid/solid polymer catalyst.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: September 26, 2006
    Assignee: Council of Scientific and Industrial Research
    Inventors: Narayanan Sankarasubbier, Palaniappan Srinivasan, Katravulapalli Veera Venkata Satya Bhaskara Sita Rama Murthy
  • Vapor phase catalytic process for simultaneous furfural hydrogenation and cyclohexanol dehydrogenation
    Patent number: 7015359
    Abstract: The present invention provides a catalytic process for the synthesis of furfuryl alcohol and cyclohexanone simultaneously over a copper based catalyst in vapour phase conditions by hydrogenation of furfural and dehydrogenation of cyclohexanol respectively.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: March 21, 2006
    Assignee: Council of Scientific and Industrial Research
    Inventors: Kamaraju Seetha Rama Rao, David Raju Burri, Narayanan Sankarasubbier, Mallanna Nagaraja Bhari, Hari Padmasri Aytam, Sivakumar Vasireddy, Shashikala Veldurthi, Seetharamulu Podila, Sanapureddy Sreevardhan Reddy
  • Process for preparing alkylated dihydroxybenzene
    Publication number: 20030125586
    Abstract: The present invention relates to a process for the preparation of alkylated dihydroxybenzene by alkylating dihydroxy benzene with tertiary butyl alcohol in the presence of a solid acid/solid polymer catalyst.
    Type: Application
    Filed: December 26, 2001
    Publication date: July 3, 2003
    Inventors: Narayanan Sankarasubbier, Palaniappan Srinivasan, Katravulapalli Veera Venkata Satya Bhaskara Sita Rama Murthy
  • Process for preparation of 2-Methyl-1,4-naphthoquinone
    Patent number: 6579994
    Abstract: The present invention describes a process for the preparation of 2-Methyl-1,4-naphthoquinone by oxidizing 2-methylnaphthalene with hydrogen peroxide in the presence of acetic acid.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: June 17, 2003
    Assignee: Council of Scientific and Industrial Research
    Inventors: Narayanan Sankarasubbier, Katravulapalli V.V.S.B.S. Murthy, Kongara Madhusudan Reddy, Premchendar Nandhikonda
  • PROCESS FOR PREPARATION OF 2-METHYL-1,4-NAPHTHOQUINONE
    Publication number: 20020188141
    Abstract: The present invention describes a process for the preparation of 2-Methyl-1,4-naphthoquinone by oxidising 2-metbylnaphthalene with hydrogen peroxide in the presence of acetic acid.
    Type: Application
    Filed: March 29, 2001
    Publication date: December 12, 2002
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Narayanan Sankarasubbier, Katravulapalli V.V.S.B.S. Murthy, Kongara Madhusudan Reddy, Premchendar Nandhikonda