Patents by Inventor Ayyappanpillai Ajayaghosh

Ayyappanpillai Ajayaghosh 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).

  • Patent number: 8529790
    Abstract: The present invention provides white light emitting materials. The invention further provides a process for the preparation of white light emitting organogels using the concept of molecular self-assembly and partial energy transfer. The donor acceptor type molecules on coassembly and subsequent irradiation with suitable wavelength light produce white light. On irradiation, partial transfer of the excitation energy from the donor to the acceptor takes place, resulting a broad emission covering the entire range from 400-700 nm to give bright white light emission with CIE coordinates of (0.31, 0.35).
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: September 10, 2013
    Assignee: Council of Scientific & Industrial Research
    Inventors: Ayyappanpillai Ajayaghosh, Chakkooth Vijayakumar, Vakayil K. Praveen
  • Patent number: 8344150
    Abstract: The present invention provides pyrrole end-capped bipyridine derivative having a general formula (1) useful for the detection of zinc ions in solution. The present invention also provides a process for the preparation of pyrrole end-capped bipyridine derivative having a general formula (1). The present invention further provides a dipstick device by coating the assay powder of formula (1) in alumina over a thermoplastic or a glass solid support. The detection event can be monitored by noting the color change and the intense fluorescence change on the surface of the dipstick. For zinc ions, in addition to the color change an intense fluorescence change from greenish-yellow to red is observed. Detection event by means of fluorescence change is selective for Zn2+ ions when compared with all other biologically important metal ions like Na+, K+, Ca2+; Mg2+, Cu2+. The present dipstick is reusable, and can conduct the analysis of different samples using same stick.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: January 1, 2013
    Assignee: Council of Scientific & Industrial Research
    Inventors: Ayyappanpillai Ajayaghosh, Sivaramapanicker Sreejith
  • Patent number: 8323732
    Abstract: The present invention provides nanocomposite materials comprising carbon nanotubes and oligo(p-phenylenevinylene) (OPV). Dispersion of CNT in the solution of solution of oligo(p-phenylenevinylene) (OPV) in organic solvent results in the formation of nanocomposite material. The ?-? interaction between CNT and OPV molecule were shown by spectroscopic and microscopic techniques. The nanocomposite solution can be drop casted over glass or metallic surface for the preparation of superhydrophobic coating. The resultant composite surface shows superhydrophobic nature even with corrosive liquids and its contact angle is almost constant even after prolonged contact with water.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: December 4, 2012
    Assignee: Council of Scientific & Industrial Research
    Inventors: Ayyappanpillai Ajayaghosh, Sampath Srinivasan, Vakayil Praveen
  • Publication number: 20100330277
    Abstract: The present invention provides nanocomposite materials comprising carbon nanotubes and oligo(p-phenylenevinylene) (OPV). Dispersion of CNT in the solution of solution of oligo(p-phenylenevinylene) (OPV) in organic solvent results in the formation of nanocomposite material. The ?-? interaction between CNT and OPV molecule were shown by spectroscopic and microscopic techniques. The nanocomposite solution can be drop casted over glass or metallic surface for the preparation of superhydrophobic coating. The resultant composite surface shows superhydrophobic nature even with corrosive liquids and its contact angle is almost constant even after prolonged contact with water.
    Type: Application
    Filed: August 26, 2008
    Publication date: December 30, 2010
    Applicant: Council of Scientific & Industrial Research
    Inventors: Ayyappanpillai Ajayaghosh, Sampath Srinivasan, Vakayit Praveer
  • Publication number: 20100283006
    Abstract: The present invention provides white light emitting materials. The invention further provides a process for the preparation of white light emitting organogels using the concept of molecular self-assembly and partial energy transfer. The donor acceptor type molecules on coassembly and subsequent irradiation with suitable wavelength light produce white light. On irradiation, partial transfer of the excitation energy from the donor to the acceptor takes place, resulting a broad emission covering the entire range from 400-700 nm to give bright white light emission with CIE coordinates of (0.31, 0.35).
    Type: Application
    Filed: June 13, 2008
    Publication date: November 11, 2010
    Inventors: Ayyappanpillai Ajayaghosh, Chakkooth Vijayakumar, Vakayil K. Praveen
  • Publication number: 20100284858
    Abstract: The present invention provides pyrrole end-capped bipyridine derivative having a general formula (1) useful for the detection of zinc ions in solution. The present invention also provides a process for the preparation of pyrrole end-capped bipyridine derivative having a general formula (1). The present invention further provides a dipstick device by coating the assay powder of formula (1) in alumina over a thermoplastic or a glass solid support. The detection event can be monitored by noting the color change and the intense fluorescence change on the surface of the dipstick. For zinc ions, in addition to the color change an intense fluorescence change from greenish-yellow to red is observed. Detection event by means of fluorescence change is selective for Zn2+ ions when compared with all other biologically important metal ions like Na+, K+, Ca2+; Mg2+, Cu2+. The present dipstick is reusable, and can conduct the analysis of different samples using same stick.
    Type: Application
    Filed: June 13, 2008
    Publication date: November 11, 2010
    Applicant: Council of Scientific & Industrial Research
    Inventors: Ayyappanpillai Ajayaghosh, Sivaramapanicker Sreejith