Patents by Inventor Som Tyagi
Som Tyagi 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).
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Publication number: 20220125922Abstract: A bandage and a method of treating a wound with the bandage is provided. The method includes the steps of applying a photosensitive dye to the wound; covering the wound with a bandage; and applying a light to the dye such that the dye generates a reactive oxygen species.Type: ApplicationFiled: November 8, 2021Publication date: April 28, 2022Applicant: STRT LLCInventors: Richard Titlebaum, Som Tyagi
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Publication number: 20200101161Abstract: A bandage and a method of treating a wound with the bandage is provided. The method includes the steps of applying a photosensitive dye to the wound; covering the wound with a bandage; and applying a light to the dye such that the dye generates a reactive oxygen species.Type: ApplicationFiled: November 25, 2019Publication date: April 2, 2020Applicant: STRT LLCInventors: Richard Titlebaum, Som Tyagi
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Patent number: 10136963Abstract: A bactericidal insert for introduction into a canal in a tooth during a root canal procedure is provided, along with a method of producing the insert and a method of using the insert in a root canal procedure. The insert is in the form of a carrier having a plurality of pores or interstices. The carrier had been impregnated with a liquid photosensitive dye so that the dye entered the pores or interstices and then the carrier with the liquid photosensitive dye forms a dye-impregnated carrier. The dye-impregnated carrier is configured and adapted for insertion within the canal of the tooth. The carrier, if dried, is adapted to receive a wetting agent to dissolve the dye therein to produce a liquefied dye, which is activatable to produce singlet oxygen within the canal when it is irradiated by light from outside of the tooth.Type: GrantFiled: December 21, 2015Date of Patent: November 27, 2018Inventors: Richard Titlebaum, Som Tyagi
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Patent number: 9945785Abstract: A method for the formation of flexible surface enhanced Raman spectroscopy substrates with filtering capabilities. The method produces thin flexible substrates that have a nanoparticle ink deposited thereon. The nanoparticle ink may be any suitable nanoparticle ink which includes stabilized nanoparticles such as silver, gold or copper nanoparticles. The substrates and nanoparticle ink undergo a thermal treatment for an amount of time sufficient to remove liquid vehicle and a substantial portion of the stabilizer. The thermal treatment provides a fractal aggregate nanoparticle layer on the substrate suitable for Raman spectroscopy. Such flexible SERS substrates may be used to detect trace amounts of analyte in large volume samples.Type: GrantFiled: January 27, 2016Date of Patent: April 17, 2018Assignee: Drexel UniversityInventors: Som Tyagi, Manuel Figueroa
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Publication number: 20180000559Abstract: A bactericidal insert for introduction into a canal in a tooth during a root canal procedure is provided, along with a method of producing the insert and a method of using the insert in a root canal procedure. The insert is in the form of a carrier having a plurality of pores or interstices. The carrier had been impregnated with a liquid photosensitive dye so that the dye entered the pores or interstices and then the carrier with the liquid photosensitive dye forms a dye-impregnated carrier. The dye-impregnated carrier is configured and adapted for insertion within the canal of the tooth. The carrier, if dried, is adapted to receive a wetting agent to dissolve the dye therein to produce a liquefied dye, which is activatable to produce singlet oxygen within the canal when it is irradiated by light from outside of the tooth.Type: ApplicationFiled: December 21, 2015Publication date: January 4, 2018Inventors: Richard Titlebaum, Som Tyagi
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Publication number: 20160161414Abstract: A method for the formation of flexible surface enhanced Raman spectroscopy substrates with filtering capabilities. The method produces thin flexible substrates that have a nanoparticle ink deposited thereon. The nanoparticle ink may be any suitable nanoparticle ink which includes stabilized nanoparticles such as silver, gold or copper nanoparticles. The substrates and nanoparticle ink undergo a thermal treatment for an amount of time sufficient to remove liquid vehicle and a substantial portion of the stabilizer. The thermal treatment provides a fractal aggregate nanoparticle layer on the substrate suitable for Raman spectroscopy. Such flexible SERS substrates may be used to detect trace amounts of analyte in large volume samples.Type: ApplicationFiled: January 27, 2016Publication date: June 9, 2016Applicant: Drexel UniversityInventors: Som Tyagi, Manuel Figueroa
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Patent number: 9278855Abstract: A method for the formation of flexible surface enhanced Raman spectroscopy substrates with filtering capabilities. The method produces thin flexible substrates that have a nanoparticle ink deposited thereon. The nanoparticle ink may be any suitable nanoparticle ink which includes stabilized nanoparticles such as silver, gold or copper nanoparticles. The substrates and nanoparticle ink undergo a thermal treatment for an amount of time sufficient to remove liquid vehicle and a substantial portion of the stabilizer. The thermal treatment provides a fractal aggregate nanoparticle layer on the substrate suitable for Raman spectroscopy. Such flexible SERS substrates may be used to detect trace amounts of analyte in large volume samples.Type: GrantFiled: May 25, 2012Date of Patent: March 8, 2016Assignee: Drexel UniversityInventors: Som Tyagi, Manuel Figueroa
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Patent number: 9086380Abstract: A method for the formation of surface enhanced Raman scattering substrates. The method produces thin substrates that have a nanoparticle ink deposited thereon. The nanoparticle ink may be any suitable nanoparticle ink such as silver, gold or copper nanoparticle ink which includes stabilized nanoparticles. The substrates and nanoparticle ink undergo a first step of heating in order to remove liquid vehicle from the ink The substrates and nanoparticles then undergo a second step of heating for an amount of time sufficient to remove a substantial portion of the stabilizer and provide a fractal aggregate nanoparticle layer on the substrate having a certain resistivity or conductivity suitable for Raman scattering. This creates SERS substrates with enhanced amplification properties.Type: GrantFiled: September 13, 2013Date of Patent: July 21, 2015Assignee: Drexel UniversityInventors: Som Tyagi, Kambiz Pourrezaei
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Publication number: 20140017448Abstract: A method for the formation of surface enhanced Raman scattering substrates. The method produces thin substrates that have a nanoparticle ink deposited thereon. The nanoparticle ink may be any suitable nanoparticle ink such as silver, gold or copper nanoparticle ink which includes stabilized nanoparticles. The substrates and nanoparticle ink undergo a first step of heating in order to remove liquid vehicle from the ink The substrates and nanoparticles then undergo a second step of heating for an amount of time sufficient to remove a substantial portion of the stabilizer and provide a fractal aggregate nanoparticle layer on the substrate having a certain resistivity or conductivity suitable for Raman scattering. This creates SERS substrates with enhanced amplification properties.Type: ApplicationFiled: September 13, 2013Publication date: January 16, 2014Applicant: DREXEL UNIVERSITYInventors: Som TYAGI, Kambiz POURREZAEI
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Patent number: 8559002Abstract: A method for the formation of surface enhanced Raman scattering substrates. The method produces thin substrates that have a nanoparticle ink deposited thereon. The nanoparticle ink may be any suitable nanoparticle ink such as silver, gold or copper nanoparticle ink which includes stabilized nanoparticles. The substrates and nanoparticle ink undergo a first step of heating in order to remove liquid vehicle from the ink. The substrates and nanoparticles then undergo a second step of heating for an amount of time sufficient to remove a substantial portion of the stabilizer and provide a fractal aggregate nanoparticle layer on the substrate having a certain resistivity or conductivity suitable for Raman scattering. This creates SERS substrates with enhanced amplification properties.Type: GrantFiled: March 20, 2009Date of Patent: October 15, 2013Assignee: Drexel UniversityInventors: Som Tyagi, Kambiz Pourrezaei
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Publication number: 20120300203Abstract: A method for the formation of flexible surface enhanced Raman spectroscopy substrates with filtering capabilities. The method produces thin flexible substrates that have a nanoparticle ink deposited thereon. The nanoparticle ink may be any suitable nanoparticle ink which includes stabilized nanoparticles such as silver, gold or copper nanoparticles. The substrates and nanoparticle ink undergo a thermal treatment for an amount of time sufficient to remove liquid vehicle and a substantial portion of the stabilizer. The thermal treatment provides a fractal aggregate nanoparticle layer on the substrate suitable for Raman spectroscopy. Such flexible SERS substrates may be used to detect trace amounts of analyte in large volume samples.Type: ApplicationFiled: May 25, 2012Publication date: November 29, 2012Inventors: Som Tyagi, Manuel Figueroa
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Publication number: 20110026019Abstract: A method for the formation of surface enhanced Raman scattering substrates. The method produces thin substrates that have a nanoparticle ink deposited thereon. The nanoparticle ink may be any suitable nanoparticle ink such as silver, gold or copper nanoparticle ink which includes stabilized nanoparticles. The substrates and nanoparticle ink undergo a first step of heating in order to remove liquid vehicle from the ink. The substrates and nanoparticles then undergo a second step of heating for an amount of time sufficient to remove a substantial portion of the stabilizer and provide a fractal aggregate nanoparticle layer on the substrate having a certain resistivity or conductivity suitable for Raman scattering. This creates SERS substrates with enhanced amplification properties.Type: ApplicationFiled: March 20, 2009Publication date: February 3, 2011Applicant: DREXEL UNIVERSITYInventors: Som Tyagi, Kambiz Pourrezaei
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Publication number: 20100130367Abstract: The present invention includes a method of using one or more biomarkers to identify individuals with inflammatory disease using Quantum Dots conjugated to targeting moieties that will specifically bind to biomarker proteins or nucleic acids encoding the biomarker, where detection of the biomarker is associated with the inflammatory disease.Type: ApplicationFiled: July 11, 2007Publication date: May 27, 2010Applicant: Drexel UniversityInventors: Sreekant Murthy, Elisabeth S. Papazoglou, Kambiz Pourrezaei, Som Tyagi, Amolkumar Karwa