Patents by Inventor Il Seung Yang

Il Seung Yang 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: 10787607
    Abstract: The present invention provides a fluorescent resveratrone [(E)-4-(6,8-dihydroxynaphthalen-2-yl)but-3-en-2-one] and its derivatives having Formula 1 and a method for preparing the same by a photochemical reaction of resveratrol and its derivatives which are not fluorescent having Formula 7 or Formula 8. The new fluorescent compounds of the present invention has single-photon absorptive characteristics and/or two-photon absorptive characteristics as well as no or little toxicity according to a cytotoxicity test and can be usefully utilized in the field of organic fluorescent element, display element, spectrometer, two-photon absorptive storing device, laser micro processing apparatus, photo dynamic therapy apparatus and the like.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: September 29, 2020
    Assignee: SNU R&DB FOUNDATION
    Inventors: Seong Keun Kim, Seung Bum Park, Il Seung Yang, II, Eun Ha Kim, Jun Hee Kang
  • Patent number: 10514298
    Abstract: A spectrophotometer is provided, which comprises a receiving part diffusing an incident light, a first broadband filter group, and a detector detecting the light having passed through the first broadband filter group, in order to easily select and detect a plurality of lights having specific wavelengths, wherein the first broadband filter group comprises a first broadband filter arranged to have a first angle with respect to an incident direction of light to enable the incident light to pass through a first wavelength band, a second broadband filter arranged to have a second angle, which is different from the first angle, with respect to an incident direction of light to enable the light having passed through the first broadband filter to pass through a second wavelength band, and a first path compensation means for adjusting a path of the light having passed through the second broadband filter to be identical to a path of the light having passed through the first broadband filter, wherein the first broadband
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: December 24, 2019
    Inventors: Seung Min Jin, Il Seung Yang, Yun Mi Bae, Seong Oak Park, Yu Sic Kim, Du Cheon Choi, Mu Hyeop Han
  • Publication number: 20190330524
    Abstract: The present invention provides a fluorescent resveratrone [(E)-4-(6,8-dihydroxynaphthalen-2-yl)but-3-en-2-one] and its derivatives having Formula 1 and a method for preparing the same by a photochemical reaction of resveratrol and its derivatives which are not fluorescent having Formula 7 or Formula 8. The new fluorescent compounds of the present invention has single-photon absorptive characteristics and/or two-photon absorptive characteristics as well as no or little toxicity according to a cytotoxicity test and can be usefully utilized in the field of organic fluorescent element, display element, spectrometer, two-photon absorptive storing device, laser micro processing apparatus, photo dynamic therapy apparatus and the like.
    Type: Application
    Filed: September 5, 2012
    Publication date: October 31, 2019
    Applicant: SUN R&DB FOUNDATION
    Inventors: Seong Keun Kim, Seung Bum Park, Il Seung Yang, Eun Ha KIM, Jun Hee Kang
  • Patent number: 10251584
    Abstract: Correction of a non-invasive blood glucose measurement measured from a video image. Correction includes irradiating white light on the skin, filtering the white light reflected from the skin by a first wavelength filter and a second wavelength filter, obtaining a first signal including a blood glucose signal and a pulse signal based on a video image generated by the white light filtered by the first wavelength filter, obtaining a second signal including a pulse signal based on a video image generated by the white light filtered by the second wavelength filter, obtaining a blood glucose signal by subtracting the second signal from the first signal, and calculating the amount of blood glucose in a subcutaneous blood vessel based on the obtained blood glucose signal. Moreover, fundamental blood glucose signals can be extracted in real time without collecting blood.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: April 9, 2019
    Inventors: Seung Min Jin, Il Seung Yang, Yun Mi Bae, Seong Oak Park, Yu Sic Kim, Du Cheon Choi, Mu Hyeop Han
  • Publication number: 20190056268
    Abstract: A spectrophotometer is provided, which comprises a receiving part diffusing an incident light, a first broadband filter group, and a detector detecting the light having passed through the first broadband filter group, in order to easily select and detect a plurality of lights having specific wavelengths, wherein the first broadband filter group comprises a first broadband filter arranged to have a first angle with respect to an incident direction of light to enable the incident light to pass through a first wavelength band, a second broadband filter arranged to have a second angle, which is different from the first angle, with respect to an incident direction of light to enable the light having passed through the first broadband filter to pass through a second wavelength band, and a first path compensation means for adjusting a path of the light having passed through the second broadband filter to be identical to a path of the light having passed through the first broadband filter, wherein the first broadband
    Type: Application
    Filed: December 1, 2016
    Publication date: February 21, 2019
    Inventors: Seung Min Jin, Il Seung Yang, Yun Mi Bae, Seong Oak Park, Yu Sic Kim, Du Cheon Choi, Mu Hyeop Han
  • Patent number: 10077399
    Abstract: The present invention provides a water-soluble fluorescent compound of resveratrone 6-O-?-glucoside [(E)-4-(8-hydroxy-6-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)naphthalen-2-yl)but-3-en-2-one] and its derivatives of Formula I which have at least one water-soluble substituent, and a method for preparing the same by a photochemical reaction of resveratrol 3-O-?-glucoside and its derivatives of having Formula 3 which are not fluorescent. Said new water-soluble fluorescent compounds has single-photon absorptive characteristics and/or two-photon absorptive characteristics as well as no or little toxicity, and can be usefully utilized in fields that requires water-soluble fluorescent characteristics (diagnosis, fluorescent probe, in vivo imaging, display, etc.).
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: September 18, 2018
    Assignee: SNU R&DB FOUNDATION
    Inventors: Seong Keun Kim, Il Seung Yang, Seon Jin Hwang, Jung Eun Lee, Jong Woo Lee, Jun Hee Kang, Eun Hak Lim
  • Publication number: 20180206767
    Abstract: Correction of a non-invasive blood glucose measurement measured from a video image. Correction includes irradiating white light on the skin, filtering the white light reflected from the skin by a first wavelength filter and a second wavelength filter, obtaining a first signal including a blood glucose signal and a pulse signal based on a video image generated by the white light filtered by the first wavelength filter, obtaining a second signal including a pulse signal based on a video image generated by the white light filtered by the second wavelength filter, obtaining a blood glucose signal by subtracting the second signal from the first signal, and calculating the amount of blood glucose in a subcutaneous blood vessel based on the obtained blood glucose signal. Moreover, fundamental blood glucose signals can be extracted in real time without collecting blood.
    Type: Application
    Filed: November 25, 2016
    Publication date: July 26, 2018
    Applicant: iiSM Inc.
    Inventors: Seung Min Jin, IL SEUNG YANG, Yun Mi Bae, Seong Oak Park, Yu Sic Kim, Du Cheon Choi, Mu Hyeop Han
  • Publication number: 20170247612
    Abstract: The present invention provides a water-soluble fluorescent compound of resveratrone 6-O-?-glucoside [(E)-4-(8-hydroxy-6-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyptetrahydro-2H-pyran-2-yl)oxy)naphthalen-2-yl)but-3-en-2-one] and its derivatives of Formula I which have at least one water-soluble substituent, and a method for preparing the same by a photochemical reaction of resveratrol 3-O-?-glucoside and its derivatives of having Formula 3 which are not fluorescent. Said new water-soluble fluorescent compounds has single-photon absorptive characteristics and/or two-photon absorptive characteristics as well as no or little toxicity, and can be usefully utilized in fields that requires water-soluble fluorescent characteristics (diagnosis, fluorescent probe, in vivo imaging, display, etc.).
    Type: Application
    Filed: December 19, 2016
    Publication date: August 31, 2017
    Inventors: Seong Keun Kim, Il Seung Yang, Seon Jin Hwang, Jung Eun Lee, Jong Woo Lee, Jun Hee Kang, Eun Hak Lim
  • Publication number: 20160097887
    Abstract: Provided is a monochromatization device for easily selecting light having a specific wavelength, comprising: a first broadband filter arranged to have a first rotational angle with respect to an incident direction of light to enable a first wavelength band to pass therethrough with respect to the incident light; a second broadband filter arranged to have a second rotational angle with respect to an incident direction of light to enable a second wavelength band to pass therethrough with respect to the light passing through the first broadband filter; and a path compensation unit for adjusting a light path so that the light path passing through the second broadband filter is the same as a path of the light incident to the first broadband filter. Accordingly, the output light efficiency for the incident light is increased and the required specific wavelength can be more easily selected.
    Type: Application
    Filed: February 13, 2014
    Publication date: April 7, 2016
    Inventors: Seung Min JIN, Il Seung YANG, Yung Doug SUH, Sang Hwan NAM, Yu Jin JUNG, Hae Mi LEE, Yun Mi BAE, So Jeong PARK, Yu Sic KIM
  • Patent number: 8467857
    Abstract: The present invention is to provide a hypodermic vein detection imaging apparatus capable of visualizing a vein under the skin. The hypodermic vein detection system according to the present invention comprises a hypodermic vein detection imaging apparatus (10) comprising a dome-shaped holder (12), a plurality of infrared light sources (11) arranged at a uniform interval in a circumferential direction on the inner surface of the dome-shaped holder (12), a motor driving unit (13) for rotating the dome-shaped holder (12), teeth (14) meshing with the motor driving unit and formed on the dome-shaped holder (12), an optical zoom lens (15) positioned at the center of the top of the dome-shaped holder, an infrared transmitting filter (16) for filtering light transmitted through the optical zoom lens (15), a first image detector (17) receiving light filtered by the infrared transmitting filter (16), and an image display device (10) for visualizing digital image information obtained by the first image detector (17).
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: June 18, 2013
    Assignee: Seoul National University R & DB Foundation
    Inventors: Seong Keun Kim, Seung Min Jin, Hyung Min Kim, Il Seung Yang, Ki Hoon Jin
  • Publication number: 20110054327
    Abstract: The present invention is to provide a hypodermic vein detection imaging apparatus capable of visualizing a vein under the skin. The hypodermic vein detection system according to the present invention comprises a hypodermic vein detection imaging apparatus (10) comprising a dome-shaped holder (12), a plurality of infrared light sources (11) arranged at a uniform interval in a circumferential direction on the inner surface of the dome-shaped holder (12), a motor driving unit (13) for rotating the dome-shaped holder (12), teeth (14) meshing with the motor driving unit and formed on the dome-shaped holder (12), an optical zoom lens (15) positioned at the center of the top of the dome-shaped holder, an infrared transmitting filter (16) for filtering light transmitted through the optical zoom lens (15), a first image detector (17) receiving light filtered by the infrared transmitting filter (16), and an image display device (10) for visualizing digital image information obtained by the first image detector (17).
    Type: Application
    Filed: April 11, 2008
    Publication date: March 3, 2011
    Inventors: Seong Keun Kim, Seung Min Jin, Hyung Min Kim, Il Seung Yang, Ki Hoon Jin