Patents by Inventor Asha Syamakumari

Asha Syamakumari 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: 11719709
    Abstract: The present invention provides a water soluble polymer surfactant (PS-DGlu) of formula I which is utilized for synthesis of functionalized polystyrene nanobead covalently incorporating (oligo) p-phenylenevinylene (OPV) nanosensor (PSG-OPV-n) which in turn is useful for the detection of bilirubin in human serum. The present invention further provides a process for the preparation of the water soluble polymer surfactant (PS-DGlu) of formula (I) and a mini emulsion polymerization process for the synthesis of PSG-OPV-n. wherein, n is 30-50. The PSG-OPV-n nanosensor beads show selectivity towards detection of bilirubin in presence of interferences such as glucose, sucrose, metal ions, cholesterol, and biliverdin with limit of detection of 20 nM. Ultimately, the invention also provides a kit for visual detection of bilirubin in human serum.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: August 8, 2023
    Assignee: Council of Scientific & Industrial Research
    Inventors: Sarabjot Kaur Makkad, Asha Syamakumari
  • Patent number: 11427661
    Abstract: The present invention provides a fluorescent polymer comprising a fluorophore perylene bisimide (PBI) and oligo (p-phenylene vinylene) (OPV) functionalized with carboxy and amine functionality groups and a polystyrene (PS) backbone for the detection of volatile organic compound, a process for the detection and a kit thereof.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: August 30, 2022
    Assignee: Council of Scientific & Industrial Research
    Inventors: Sarabjot Kaur Makkad, Asha Syamakumari
  • Publication number: 20210255206
    Abstract: The present invention provides a water soluble polymer surfactant (PS-DGlu) of formula I which is utilized for synthesis of functionalized polystyrene nanobead covalently incorporating (oligo) p-phenylenevinylene (OPV) nanosensor (PSG-OPV-n) which in turn is useful for the detection of bilirubin in human serum. The present invention further provides a process for the preparation of the water soluble polymer surfactant (PS-DGlu) of formula (I) and a mini emulsion polymerization process for the synthesis of PSG-OPV-n. wherein, n is 30-50. The PSG-OPV-n nanosensor beads show selectivity towards detection of bilirubin in presence of interferences such as glucose, sucrose, metal ions, cholesterol, and biliverdin with limit of detection of 20 nM. Ultimately, the invention also provides a kit for visual detection of bilirubin in human serum.
    Type: Application
    Filed: April 16, 2020
    Publication date: August 19, 2021
    Inventors: Sarabjot Kaur Makkad, Asha Syamakumari
  • Publication number: 20210088449
    Abstract: The present invention provides a fluorescent polymer comprising a fluorophore perylene bisimide (PBI) and oligo (p-phenylene vinylene) (OPV) functionalized with carboxy and amine functionality groups and a polystyrene (PS) backbone for the detection of volatile organic compound, a process for the detection and a kit thereof.
    Type: Application
    Filed: February 18, 2019
    Publication date: March 25, 2021
    Inventors: Sarabjot Kaur MAKKAD, Asha SYAMAKUMARI
  • Patent number: 9915669
    Abstract: The present invention provide water soluble polyfluorenes functionalized with glucuronic acid useful in sensing bilirubin in aqueous medium and process for preparation thereof. The invention further deals with detecting bilirubin in human serum samples in the range from normal (<25 ?mol/L˜1.2 mg/dL) human bilirubin level to jaundiced bilirubin level (>50 ?mol/L˜2.5 mg/dL).1 This is a fluorescence turn-off mode of detection where blue fluorescence of polymer quenches and becomes colorless. The water soluble polyfluorenes functionalized with glucuronic acid can detect free bilirubin in the range from 1×10?4 M to 1×10?7 M moles in aqueous and buffer media as a change in the fluorescence signal.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: March 13, 2018
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Asha Syamakumari, Senthil Kumar
  • Patent number: 9850337
    Abstract: The present invention relates to a facile process for the preparation of non-covalently cross-linked self-assembled perylene bisimide nano structures using hydrogen bonding interactions with poly-4-vinyl pyridine or oligophenylene vinylene (OPV) as structural motif.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: December 26, 2017
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Asha Syamakumari, Rekha Narayan, Shekhar Shinde, Saibal Bhaumik
  • Patent number: 9631066
    Abstract: The invention disclosed herein is the composition comprising a fluorescent chromophore as cross linker incorporated to polymer beads, wherein the fluorescence of the composition occurs in solid state and solution state with high quantum yield in solid state. Particularly, the invention provides fluorescent monodisperse crosslinked PS-PBIX, PS-OPVX, PS-PBITEGA, PS-PBITEGA-OPVX, PS-PBIX-OPVX, PMMA-OPVX, and PMMA-PBIX microspheres or beads, having tunable color emission such that fluorophore made using PS-PBITEGA-OPVX will emit white light. Further it discloses process for the preparation of highly fluorescent monodisperse, cross-linked polymer microbeads.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: April 25, 2017
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Asha Syamakumari, Swapnil Laxman Sonawane
  • Publication number: 20160169917
    Abstract: The present invention provide water soluble polyfluorenes functionalized with glucuronic acid useful in sensing bilirubin in aqueous medium and process for preparation thereof. The invention further deals with detecting bilirubin in human serum samples in the range from normal (<25 ??ioI/L˜1.2 mg/dL) human bilirubin level to jaundiced bilirubin level (>50 ??ioI/L˜2.5 mg/dL). This is a fluorescence turn-off mode of detection where blue fluorescence of polymer quenches and becomes colorless. The water soluble polyfluorenes functionalized with glucuronic acid can detect free bilirubin in the range from 1×1O?4M to 1×10?7M moles in aqueous and buffer media as a change in the fluorescence signal.
    Type: Application
    Filed: July 31, 2014
    Publication date: June 16, 2016
    Inventors: Asha SYAMAKUMARI, Senthil KUMAR
  • Patent number: 9290601
    Abstract: Disclosed herein is a tunable fluorescent polymer composition comprising silk and one or more polymerizable monomer provided with fluorescent probe, wherein, the said one or more polymerizable monomer provided with fluorescent probe is grafted onto the silk backbone at the a-position of the amide useful in optoelectronics.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: March 22, 2016
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Asha Syamakumari, Kaushlendra Kumar, Anuya Nisal
  • Publication number: 20150183956
    Abstract: The invention disclosed herein is the composition comprising a fluorescent chromophore as cross linker incorporated to polymer beads, wherein the fluorescence of the composition occurs in solid state and solution state with high quantum yield in solid state. Particularly, the invention provides fluorescent monodisperse crosslinked PS-PBIX, PS-OPVX, PS-PBITEGA, PS-PBITEGA-OPVX, PS-PBIX-OPVX, PMMA-OPVX, and PMMA-PBIX microspheres or beads, having tunable color emission such that fluorophore made using PS-PBITEGA-OPVX will emit white light. Further it discloses process for the preparation of highly fluorescent monodisperse, cross-linked polymer microbeads.
    Type: Application
    Filed: May 13, 2014
    Publication date: July 2, 2015
    Inventors: Asha Syamakumari, Swapnil Laxman Sonawane
  • Publication number: 20150166709
    Abstract: Disclosed herein is a tunable fluorescent polymer composition comprising silk and one or more polymerizable monomer provided with fluorescent probe, wherein, the said one or more polymerizable monomer provided with fluorescent probe is grafted onto the silk backbone at the a-position of the amide useful in optoelectronics.
    Type: Application
    Filed: July 16, 2013
    Publication date: June 18, 2015
    Applicant: COUNCIL OF SCIENTIFIC & INDSUTRIAL RESEARCH
    Inventors: Asha Syamakumari, Kaushlendra Kumar, Anuya Nisal
  • Publication number: 20150111982
    Abstract: The present invention relates to a facile process for the preparation of non-covalently cross-linked self-assembled perylene bisimide nano structures using hydrogen bonding interactions with poly-4-vinyl pyridine or oligophenylene vinylene (OPV) as structural motif.
    Type: Application
    Filed: March 4, 2013
    Publication date: April 23, 2015
    Inventors: Asha Syamakumari, Rekha Narayan, Shekhar Shinde, Saibal Bhaumik
  • Patent number: 8048979
    Abstract: The present invention involves the design of a radiation curable organic pre polymer resin material based on urethane acrylic linkage synthesized from the natural renewable resource cardanol or a derivative thereof, for coating application. These new molecules have a faster and better curing rate compared to the starting renewable resource—cardanol. This is brought about by the hydrogen bonding of the urethane linkage which leads to a pre organization of the molecules in such a way as to bring the cross linkable double bonds closer to each other. The present invention also involves a UV curable formulation of the above mentioned resins along with 2-10 parts by weight of a photopolymerization initiator. The resin, either in a formulation or alone turns into a cross linked film upon photopolymerization in presence of photoinitiator under a UV curable radiation source like a mercury vapor pressure lamp.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: November 1, 2011
    Assignee: Council of Scientific and Industrial Research
    Inventors: Asha Syamakumari, Chennakkattu Krishna Sadasivan Pillai
  • Publication number: 20090306240
    Abstract: The present invention involves the design of a radiation curable organic pre polymer resin material based on urethane acrylic linkage synthesized from the natural renewable resource cardanol or a derivative thereof, for coating application. These new molecules have a faster and better curing rate compared to the starting renewable resource—cardanol. This is brought about by the hydrogen bonding of the urethane linkage which leads to a pre organization of the molecules in such a way as to bring the cross linkable double bonds closer to each other. The present invention also involves a UV curable formulation of the above mentioned resins along with 2-10 parts by weight of a photopolymerization initiator. The resin, either in a formulation or alone turns into a cross linked film upon photopolymerization in presence of photoinitiator under a UV curable radiation source like a mercury vapor pressure lamp.
    Type: Application
    Filed: December 30, 2005
    Publication date: December 10, 2009
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Asha Syamakumari, Chennakkattu Krishna Sadasivan Pillai