Patents by Inventor Ajayaghosh Ayyappanpillai

Ajayaghosh Ayyappanpillai 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: 12271090
    Abstract: A transparent gel electrolyte comprising a polymeric gelling agent, a lithium or ammonium salt ionic conductor, molecular iodine and a solvent selected from water, water and DMSO or water and alcohol. This electrolyte can be used in electrochromic devices.
    Type: Grant
    Filed: February 15, 2021
    Date of Patent: April 8, 2025
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH AN INDIAN REGISTERED BODY INCORPORATED UNDER THE REGN. OF SOC. ACT (ACT XXI OF 1860)
    Inventors: Biswapriya Deb, Ajayaghosh Ayyappanpillai, Ranjana Venugopal, Gayathri Prabhu Thulichal Ganesh Prabhu, Sreejith Shankar Pooppanal
  • Publication number: 20240400898
    Abstract: Design and applications of a class of water-soluble small molecules represented by formula 1. The molecules, in their dilute aqueous solutions, exhibit lower critical solution temperature (LCST) phase transitions near room temperature, inducing a temperature triggered switching of opacity. Further, disclosed is a scalable smart window, akin to a radiative energy management system, that can be incorporated into the built environment for imparting energy efficiency. The window fabrication is facile wherein the aqueous solution is sandwiched between two transparent glass panes to enable modulation of light and heat transmission. The dynamic window of present invention represents with multifarious applications in developing scalable, smart energy management systems for indoor building environments is envisioned to be a major contribution towards cost effective smart glass technologies.
    Type: Application
    Filed: September 23, 2022
    Publication date: December 5, 2024
    Inventors: Ajayaghosh Ayyappanpillai, Dipak Patra, Sreejith Shankar Pooppanal
  • Publication number: 20240376060
    Abstract: The present invention is related to a class of stable 2D covalent organic frameworks with multiple dimethyl amino groups that can trap carbon dioxide at ambient temperature and pressure, and an economical, environmentally-friendly process for the generation of transient surface charges and subsequent self-exfoliation of the COF into ultrathin nanosheets. The said exfoliated material possess activity against pathogenic bacteria. The invention further discloses a carbon dioxide induced exfoliation process that is completely reversible upon heat treatment, whereby control over bacterial growth is achieved via an efficient antibiotic switch.
    Type: Application
    Filed: January 6, 2023
    Publication date: November 14, 2024
    Inventors: Ajayaghosh AYYAPPANPILLAI, Arindam MAL, Rakesh MISHRA KUMAR, Dileep Kumar BHASKARAN NAIR SARASWATHY AMMA, Jubi JACOB, Sreejith SHANKAR POOPPANAL
  • Publication number: 20230028718
    Abstract: The present invention relates to design and applications of a class of water-soluble small molecules represented by Formula 1. In aqueous solutions the said molecules exhibit lower critical solution temperature (LCST) phase transition near room temperature, imparting a temperature triggered switching of transparency stages. Further, it discloses a solution comprising Formula 1 and a scalable smart radiative energy management system that takes form of a dynamic window, wherein the aqueous solution is sandwiched between two transparent glass panes to enable modulation of light and heat transmission. With simple and economical starting materials, the dynamic windows of present invention represent leaps towards creating a niche technology with multifarious applications in developing scalable, smart energy management systems for indoor building environments.
    Type: Application
    Filed: October 16, 2020
    Publication date: January 26, 2023
    Inventors: Ajayaghosh AYYAPPANPILLAI, Satyajit DAS, Suraj SOMAN, Adersh ASOK, Sreejith SHANKAR POOPPANAL
  • Publication number: 20220244607
    Abstract: Liquid electrolytes in electrochemical devices suffer from leakage issues and hence gel or solid electrolytes are generally preferred. The present invention intends to disclose the development of a gel electrolyte system which differs from conventional gel electrolytes via the addition of a composition controlled molecular additive, and its use in laminated electrochromic devices with improved performance.
    Type: Application
    Filed: February 15, 2021
    Publication date: August 4, 2022
    Inventors: Biswapriya DEB, Ajayaghosh AYYAPPANPILLAI, Ranjana VENUGOPAL, Gayathri PRABHU THULICHAL GANESH PRABHU, Sreejith SHANKAR POOPPANAL
  • Patent number: 10144722
    Abstract: The present invention is to provide highly solid state emissive fluorophores of the formula 1 and 2 useful for the solid state lighting. The formula 1 and 2 have good solid state emission in blue and green region respectively. The zinc complexes of formula 1A and 2A have yellow and red emission respectively in solid state. The present invention also provide high solid state emissive assay of formula 1 and 2 to convert UV light into visible light by coating the color tunable materials on the 365-nm emitting solid state LED. The present invention further provides carbazole end-capped bipyridine for screening of metal salts with different counterions in solutions. The discrimination of the various metal salts can be monitored by noting the fluorescence change in solution. The zinc salts with different counterions have different emission color in solution. The present invention also develop a new two photon active fluorescent Zn2+ specific probe for detecting Zn2+ in cellular environments.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: December 4, 2018
    Assignee: Council of Scientific & Industrial Research
    Inventors: Ajayaghosh Ayyappanpillai, Divya Kizhumuri, Srinivasan Sampath
  • Patent number: 9791451
    Abstract: The present invention describes the use of a fluorescent NIR dye for various applications by simply changing the solvent conditions. Molecule of formula 1 in the monomeric state (30% ACN/25 mM phosphate buffer) can be used for the sensitive detection of thiols and monitoring minor fluctuations in the thiol concentration inside live cells. Molecule 1 in the self-assembled state (25 mM phosphate buffer) can be used for labeling of serum albumin protein either covalently or noncovalently at specific pH. The probe 1 specifically bind with the serum albumin proteins noncovalently at lower pH gives a “turn-on” NIR emission whereas it binds covalently at higher pH gives a “turn-on” green fluorescence. Since the probe detects serum albumin proteins selectively in presence of other thiol containing small molecules, the probe can be used as an excellent sensor for serum albumin proteins. The dye-protein complex of various ratios can be used as sensors to detect the pH variations in a broad window from 4.6-11.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: October 17, 2017
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Ajayaghosh Ayyappanpillai, Anees Puravan
  • Publication number: 20170057946
    Abstract: The present invention is to provide highly solid state emissive fluorophores of the formula 1 and 2 useful for the solid state lighting. The formula 1 and 2 have good solid state emission in blue and green region respectively. The zinc complexes of formula 1A and 2A have yellow and red emission respectively in solid state. The present invention also provide high solid state emissive assay of formula 1 and 2 to convert UV light into visible light by coating the color tunable materials on the 365-nm emitting solid state LED. The present invention further provides carbazole end-capped bipyridine for screening of metal salts with different counterions in solutions. The discrimination of the various metal salts can be monitored by noting the fluorescence change in solution. The zinc salts with different counterions have different emission color in solution. The present invention also develop a new two photon active fluorescent Zn2+ specific probe for detecting Zn2+ in cellular environments.
    Type: Application
    Filed: October 4, 2016
    Publication date: March 2, 2017
    Inventors: Ajayaghosh Ayyappanpillai, Divya Kizhumuri, Srinivasan Sampath
  • Patent number: 9493488
    Abstract: The present invention is to provide highly solid state emissive fluorophores of the formula 1 and 2 useful for the solid state lighting. The formula 1 and 2 have good solid state emission in blue and green region respectively. The zinc complexes of formula 1A and 2A have yellow and red emission respectively in solid state. The present invention also provide high solid state emissive assay of formula 1 and 2 to convert UV light into visible light by coating the color tunable materials on the 365-nm emitting solid state LED. The present invention further provides carbazole end-capped bipyridine for screening of metal salts with different counterions in solutions. The discrimination of the various metal salts can be monitored by noting the fluorescence change in solution. The zinc salts with different counterions have different emission color in solution. The present invention also develop a new two photon active fluorescent Zn2+ specific probe for detecting Zn2+ in cellular environments.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: November 15, 2016
    Assignee: Council of Scientific & Industrial Research
    Inventors: Ajayaghosh Ayyappanpillai, Divya Kizhumuri, Srinivasan Sampath
  • Publication number: 20160209419
    Abstract: The present invention describes the use of a fluorescent NIR dye for various applications by simply changing the solvent conditions. Molecule of formula 1 in the monomeric state (30% ACN/25 mM phosphate buffer) can be used for the sensitive detection of thiols and monitoring minor fluctuations in the thiol concentration inside live cells. Molecule 1 in the self-assembled state (25 mM phosphate buffer) can be used for labeling of serum albumin protein either covalently or noncovalently at specific pH. The probe 1 specifically bind with the serum albumin proteins noncovalently at lower pH gives a “turn-on” NIR emission whereas it binds covalently at higher pH gives a “turn-on” green fluorescence. Since the probe detects serum albumin proteins selectively in presence of other thiol containing small molecules, the probe can be used as an excellent sensor for serum albumin proteins. The dye-protein complex of various ratios can be used as sensors to detect the pH variations in a broad window from 4.6-11.
    Type: Application
    Filed: December 9, 2013
    Publication date: July 21, 2016
    Inventors: Ajayaghosh Ayyappanpillai, Anees Puravan
  • Patent number: 9255222
    Abstract: The present invention provides a novel fluorescent molecule having formula 1 which exhibit emission color change when in contact with moisture useful for the preparation of fluorescent paper, allowing self-erasable writing, security label for document authenticity, check and prevention of currency counterfeit. Compound of formula 1 when coated on paper results in blue emitting surfaces on which writing is possible using water as ink. The images undergo self-erasal after 6 hours making the paper reusable or instantly with hot air. The images are visible only on illumination with a UV lamp having wavelength 365 nm. The material can be coated on any document to create security label which changes color on touching with a wet surface or water pen and will go back to the native color when the moisture is dried off after a time frame. This strategy is used to create a security label for currency bills for checking original and fake currency notes or any other documents for authenticity.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: February 9, 2016
    Assignee: Council of Scientific and Industrial Research
    Inventors: Ajayaghosh Ayyappanpillai, Thirumalai Kumaran Rajasekaran
  • Publication number: 20150299563
    Abstract: The present invention provides a novel fluorescent molecule having formula 1 which exhibit emission color change when in contact with moisture useful for the preparation of fluorescent paper, allowing self-erasable writing, security label for document authenticity, check and prevention of currency counterfeit. Compound of formula 1 when coated on paper results in blue emitting surfaces on which writing is possible using water as ink. The images undergo self-erasal after 6 hours making the paper reusable or instantly with hot air. The images are visible only on illumination with a UV lamp having wavelength 365 nm. The material can be coated on any document to create security label which changes color on touching with a wet surface or water pen and will go back to the native color when the moisture is dried off after a time frame. This strategy is used to create a security label for currency bills for checking original and fake currency notes or any other documents for authenticity.
    Type: Application
    Filed: April 20, 2015
    Publication date: October 22, 2015
    Inventors: Ajayaghosh Ayyappanpillai, Thirumalai Kumaran Rajasekaran
  • Patent number: 9012688
    Abstract: The present invention provides a novel fluorescent molecule having formula 1 which exhibit emission color change when in contact with moisture useful for the preparation of fluorescent paper, allowing self-erasable writing, security label for document authenticity, check and prevention of currency counterfeit. Compound of formula 1, when coated on paper, results in blue emitting surfaces on which writing is possible using water as ink. The images undergo self-erasal after 6 hours making the paper reusable or instantly with hot air. The images are visible only on illumination with a UV lamp having wavelength 365 nm. The material can be coated on any document to create security label which changes color on touching with a wet surface or water pen and will go back to the native color when the moisture is dried off after a time frame.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: April 21, 2015
    Assignee: Council of Scientific and Industrial Research
    Inventors: Ajayaghosh Ayyappanpillai, Thirumalai Kumaran Rajasekaran
  • Publication number: 20140023883
    Abstract: The present invention is to provide highly solid state emissive fluorophores of the formula 1 and 2 useful for the solid state lighting. The formula 1 and 2 have good solid state emission in blue and green region respectively. The zinc complexes of formula 1A and 2A have yellow and red emission respectively in solid state. The present invention also provide high solid state emissive assay of formula 1 and 2 to convert UV light into visible light by coating the color tunable materials on the 365-nm emitting solid state LED. The present invention further provides carbazole end-capped bipyridine for screening of metal salts with different counterions in solutions. The discrimination of the various metal salts can be monitored by noting the fluorescence change in solution. The zinc salts with different counterions have different emission color in solution. The present invention also develop a new two photon active fluorescent Zn2+ specific probe for detecting Zn2+ in cellular environments.
    Type: Application
    Filed: February 14, 2012
    Publication date: January 23, 2014
    Applicant: Council of Scientific & Industrial Research
    Inventors: Ajayaghosh Ayyappanpillai, Divya Kizhumuri, Srinivasan Sampath
  • Publication number: 20130209665
    Abstract: The present invention provides a novel fluorescent molecule having formula 1 which exhibit emission color change when in contact with moisture useful for the preparation of fluorescent paper, allowing self-erasable writing, security label for document authenticity, check and prevention of currency counterfeit Compound of formula 1, when coated on paper, results in blue emitting surfaces on which writing is possible using water as ink. The images undergo self-erasal after 6 hours making the paper reusable or instantly with hot air. The images are visible only on illumination with a UV lamp having wavelength 365 nm. The material can be coated on any document to create security label which changes color on touching with a wet surface or water pen and will go back to the native color when the moisture is dried off after a time frame.
    Type: Application
    Filed: August 10, 2012
    Publication date: August 15, 2013
    Inventors: Ajayaghosh Ayyappanpillai, Thirumalai Kumaran Rajasekaran