Patents by Inventor Chettiyan Thodi Fathimath Salfeena

Chettiyan Thodi Fathimath Salfeena 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 pyrylium salts
    Patent number: 11661407
    Abstract: The present invention relates to the process for the preparation of Pyrylium salts having the formula represented below. Present invention provide a simplified method of producing symmetrical and unsymmetrical pyrylium salts. The invention explores readily available starting materials with reaction conditions which are suitable for industrial scale applications. All the synthesized compounds were confirmed by various spectroscopic techniques such as Fourier transform infrared spectroscopy, 1H NMR, 13C NMR, 19F NMR spectroscopy, and single-crystal X-ray analysis. Mass of the compounds confirmed by HRMS analysis.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: May 30, 2023
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Sasidhar Balappa Somappa, Chettiyan Thodi Fathimath Salfeena, Ayyappanpillai Ajayaghosh