Patents by Inventor Kijoon Lee

Kijoon Lee 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).

  • Publication number: 20240057883
    Abstract: Blood flow rates can be calculated using diffuse speckle contrast analysis in spatial and time domains. In the spatial domain analysis, a multi-pixel image sensor can be used to detect a spatial distribution of speckles in a sample caused by diffusion of light from a coherent light source that is blurred due to the movement of scatterers within the sample (e.g., red blood cells moving within a tissue sample). Statistical analysis of the spatial distribution can be used to calculate blood flow. In the time domain analysis, a slow counter can be used to obtain time-series fluctuations in light intensity in a sample caused by diffusion of light in the sample that is smoothened due to the movement of scatterers. Statistical analysis of the time-series data can be used to calculate blood flow.
    Type: Application
    Filed: March 20, 2023
    Publication date: February 22, 2024
    Inventors: Kijoon Lee, Renzhe Bi, Jing Dong
  • Publication number: 20230148888
    Abstract: Disclosed herein are systems and methods for revascularization assessment. The methods can in some cases include one or more of the steps of measuring blood perfusion as a function of time to obtain time series data, mathematically transforming the time series data into a power spectrum, calculating at least one parameter of the power spectrum within a specific frequency range, and using the at least one calculated parameter as a discriminator for the first population and the second population.
    Type: Application
    Filed: June 24, 2022
    Publication date: May 18, 2023
    Inventors: Kijoon LEE, Renzhe Bi, Jing Dong, Justin Dauwels
  • Publication number: 20220293072
    Abstract: Disclosed are a spiral curve type music sheet in which different notes are displayed at different positions on a spiral curve based on the pitches of notes, and an apparatus and method for providing a spiral curve type music sheet. The apparatus for providing a spiral curve type music sheet may include a memory configured to store a spiral curve type music sheet in which different notes are displayed at different positions on a spiral curve based on the pitch of the note and note data, and a processor configured to determine the note symbol position related to the note data on the spiral curve in the spiral curve type music sheet based on the frequency of the note data.
    Type: Application
    Filed: September 15, 2021
    Publication date: September 15, 2022
    Applicant: DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Kijoon LEE, Jun Tak NOH, Han Gyeol WOO, Jae Hyuk LEE, Hye Jun LEE, Ji Ho JANG, Jang Woo CHOO
  • Patent number: 11206990
    Abstract: Blood flow rates can be calculated using diffuse speckle contrast analysis in spatial and time domains. In the spatial domain analysis, a multi-pixel image sensor can be used to detect a spatial distribution of speckles in a sample caused by diffusion of light from a coherent light source that is blurred due to the movement of scatterers within the sample (e.g., red blood cells moving within a tissue sample). Statistical analysis of the spatial distribution can be used to calculate blood flow. In the time domain analysis, a slow counter can be used to obtain time-series fluctuations in light intensity in a sample caused by diffusion of light in the sample that is smoothened due to the movement of scatterers. Statistical analysis of the time-series data can be used to calculate blood flow.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: December 28, 2021
    Inventors: Kijoon Lee, Renzhe Bi, Jing Dong
  • Publication number: 20210244295
    Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.
    Type: Application
    Filed: April 29, 2021
    Publication date: August 12, 2021
    Inventors: Kijoon Lee, Jing Dong, Renzhe Bi
  • Publication number: 20210180165
    Abstract: Disclosed herein are embodiments of an additive-containing alloy that exhibit improved strength, particularly at high temperatures, creep resistance, thermal fatigue resistance, and oxidation resistance. Also disclosed herein are embodiments of a method for making such additive-containing alloys, including methods whereby the additive component of such alloys can be selectively deposited according to a pre-designed pattern. Such method embodiments facilitate producing programmable alloy embodiments wherein the additive component can be provided in desired regions of the alloy and/or at desired concentrations within the alloy.
    Type: Application
    Filed: February 22, 2021
    Publication date: June 17, 2021
    Applicant: Oregon State University
    Inventors: Somayeh Pasebani, S. Milad Ghayoor Baghbani, Brian K. Paul, Chih-hung Chang, Kijoon Lee, Yujuan He
  • Patent number: 11000200
    Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: May 11, 2021
    Assignee: Pedra Technology PTE LTD
    Inventors: Kijoon Lee, Jing Dong, Renzhe Bi
  • Patent number: 10986144
    Abstract: A system to support collaboration among client devices on a network comprising: a storage device that includes a class data structure to associate a message object, a file object, and a task object; a message bus module to communicate over the network; a file module configured to associate a message a file object instance with at least one of a message object instance and a task object instance; a task module configured to associate a task object instance with at least one of a message object instance and a file object instance; and a message module configured to associate a message with at least one of a file object instance, and a task object instance.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: April 20, 2021
    Assignee: HealthLinx Technologies, Inc.
    Inventors: Kijoon Lee, Maksim Ustinov
  • Publication number: 20200093382
    Abstract: Disclosed herein are systems and methods for revascularization assessment. The methods can in some cases include one or more of the steps of measuring blood perfusion as a function of time to obtain time series data, mathematically transforming the time series data into a power spectrum, calculating at least one parameter of the power spectrum within a specific frequency range, and using the at least one calculated parameter as a discriminator for the first population and the second population.
    Type: Application
    Filed: May 1, 2019
    Publication date: March 26, 2020
    Inventors: Kijoon Lee, Renzhe Bi, Jing Dong, Justin Dauwels
  • Publication number: 20200022595
    Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.
    Type: Application
    Filed: February 22, 2019
    Publication date: January 23, 2020
    Inventors: Kijoon Lee, Jing Dong, Renzhe Bi
  • Patent number: 10213122
    Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: February 26, 2019
    Assignee: Nanyang Technological University
    Inventors: Kijoon Lee, Jing Dong, Renzhe Bi
  • Publication number: 20180368705
    Abstract: Disclosed herein are systems and methods for revascularization assessment. The methods can in some cases include one or more of the steps of measuring blood perfusion as a function of time to obtain time series data, mathematically transforming the time series data into a power spectrum, calculating at least one parameter of the power spectrum within a specific frequency range, and using the at least one calculated parameter as a discriminator for the first population and the second population.
    Type: Application
    Filed: February 8, 2018
    Publication date: December 27, 2018
    Inventors: Kijoon Lee, Renzhe Bi, Jing Dong, Justin Dauwels
  • Publication number: 20170311819
    Abstract: Disclosed herein are systems and methods for revascularization assessment. The methods can in some cases include one or more of the steps of measuring blood perfusion as a function of time to obtain time series data, mathematically transforming the time series data into a power spectrum, calculating at least one parameter of the power spectrum within a specific frequency range, and using the at least one calculated parameter as a discriminator for the first population and the second population.
    Type: Application
    Filed: December 13, 2016
    Publication date: November 2, 2017
    Inventors: Kijoon Lee, Renzhe Bi, Jing Dong, Justin Dauwels
  • Publication number: 20170231510
    Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.
    Type: Application
    Filed: May 1, 2017
    Publication date: August 17, 2017
    Inventors: Kijoon Lee, Jing Dong, Renzhe Bi
  • Patent number: 9636025
    Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: May 2, 2017
    Assignee: Nanyang Technological University
    Inventors: Kijoon Lee, Jing Dong, Renzhe Bi
  • Patent number: 9251585
    Abstract: A method for coregistration of multi-modal images obtained in different geometries includes acquiring multi-modal image data, wherein the multi-model image data includes image data of a first modality and image data of a second modality, wherein the image data of the respective modalities have different geometries, defining a volume of interest in the multi-modal image data, segmenting the image data of the first modality and incorporating segmentation data of the first modality into a reconstruction of the second modality, and applying a registration of the second modality image data to the first modality image data according to a similarity measure through the volume of interest, wherein an output of the registration comprises superimposed multi-modal image data.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: February 2, 2016
    Assignee: Siemens Aktiengesellschaft
    Inventors: Fred S. Azar, Arjun G. Yodh, Regine Choe, Kijoon Lee
  • Publication number: 20150073271
    Abstract: Disclosed herein are systems and methods for revascularization assessment. The methods can in some cases include one or more of the steps of measuring blood perfusion as a function of time to obtain time series data, mathematically transforming the time series data into a power spectrum, calculating at least one parameter of the power spectrum within a specific frequency range, and using the at least one calculated parameter as a discriminator for the first population and the second population.
    Type: Application
    Filed: August 14, 2014
    Publication date: March 12, 2015
    Inventors: Kijoon Lee, Renzhe Bi, Jing Dong, Justin Dauwels
  • Publication number: 20140206980
    Abstract: Blood flow rates can be calculated using diffuse speckle contrast analysis in spatial and time domains. In the spatial domain analysis, a multi-pixel image sensor can be used to detect a spatial distribution of speckles in a sample caused by diffusion of light from a coherent light source that is blurred due to the movement of scatterers within the sample (e.g., red blood cells moving within a tissue sample). Statistical analysis of the spatial distribution can be used to calculate blood flow. In the time domain analysis, a slow counter can be used to obtain time-series fluctuations in light intensity in a sample caused by diffusion of light in the sample that is smoothened due to the movement of scatterers. Statistical analysis of the time-series data can be used to calculate blood flow.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 24, 2014
    Applicant: Nanyang Technological University
    Inventors: Kijoon Lee, Renzhe Bi, Jing Dong
  • Publication number: 20140052006
    Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.
    Type: Application
    Filed: August 14, 2013
    Publication date: February 20, 2014
    Applicant: Nanyang Technological University
    Inventors: Kijoon Lee, Jing Dong, Renzhe Bi
  • Patent number: 8381063
    Abstract: Provided is a decoding apparatus and method based on a variable error correction value. The decoding method includes setting an initial normalized factor and a normalized factor correction value, initially updating a check node based on the initial normalized factor, and updating the check node based on a variable error correction value acquired by adding the initial normalized factor and the normalized factor correction value.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: February 19, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Euna Choi, Dae-Ig Chang, Kijoon Lee, Habong Jung