Patents by Inventor Sweety Singhal

Sweety Singhal 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 direct hydroxylation of aromatic hydrocarbons
    Patent number: 7781622
    Abstract: The present invention provides a process for direct hydroxylation of aromatic hydrocarbons like benzene to phenol, toluene to cresols and anisole to methoxy phenols by using hydrogen peroxide as environmentally benign oxidant in polar solvent like acetonitrile using vanadium phthalocyanine or its derivative as a catalyst, at a temperature in the range of 25-100° C.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: August 24, 2010
    Assignee: Council of Scientific & Industrial Research
    Inventors: Suman Lata Jain, Jomy K. Joseph, Sweety Singhal, Bir Sain, Ragunathan Sivakumaran, Basant Kumar
  • PROCESS FOR DIRECT HYDROXYLATION OF AROMATIC HYDROCARBONS
    Publication number: 20090192337
    Abstract: The present invention provides a process for direct hydroxylation of aromatic hydrocarbons like benzene to phenol, toluene to cresols and anisole to methoxy phenols by using hydrogen peroxide as environmentally benign oxidant in polar solvent like acetonitrile using vanadium phthalocyanine or its derivative as a catalyst, at a temperature in the range of 25-100° C.
    Type: Application
    Filed: October 30, 2008
    Publication date: July 30, 2009
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Suman Lata JAIN, Jomy K. JOSEPH, Sweety SINGHAL, Bir SAIN, Ragunathan SIVAKUMARAN, Basant KUMAR