Patents by Inventor Ka Ram Hwang

Ka Ram Hwang 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: 11911188
    Abstract: Provided is an apparatus for non-invasively monitoring a health condition. The apparatus for monitoring health according to an example embodiment of the disclosure includes: a pulse wave sensor configured to obtain a first pulse wave signal in a first contact state of an object and a second pulse wave signal in a second contact state of the object; and a processor configured to estimate a degree of vasodilation based on an alternating current (AC) component of each of the first pulse wave signal and the second pulse wave signal, configured to monitor a vascular health condition based on the estimated degree of vasodilation, and configured to output a result of monitoring the vascular health condition.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: February 27, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: So Young Lee, Jeong Eun Hwang, Ka Ram Choi
  • Patent number: 10848002
    Abstract: Disclosed are a microrobot propulsion apparatus based on wireless power transmission and a method of manufacturing the same. The microrobot propulsion apparatus according to one embodiment of the present disclosure may include a coil part for outputting a time-varying magnetic field or a static magnetic field applied to a microrobot including a coil for receiving power and a coil for an electromagnet, and a multipurpose inverter including a static magnetic field path portion allowing the coil part to output the static magnetic field and a time-varying magnetic field path portion allowing the coil part to output the time-varying magnetic field.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: November 24, 2020
    Assignees: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
    Inventors: Seung Young Ahn, Bom Son Lee, Dong Wook Kim, Hong Kyun Kim, Jae Hyoung Park, Bum Jin Park, Ka Ram Hwang
  • Publication number: 20190173320
    Abstract: Disclosed are a microrobot propulsion apparatus based on wireless power transmission and a method of manufacturing the same. The microrobot propulsion apparatus according to one embodiment of the present disclosure may include a coil part for outputting a time-varying magnetic field or a static magnetic field applied to a microrobot including a coil for receiving power and a coil for an electromagnet, and a multipurpose inverter including a static magnetic field path portion allowing the coil part to output the static magnetic field and a time-varying magnetic field path portion allowing the coil part to output the time-varying magnetic field.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 6, 2019
    Applicants: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
    Inventors: Seung Young AHN, Bom Son LEE, Dong Wook KIM, Hong Kyun KIM, Jae Hyoung PARK, Bum Jin PARK, Ka Ram HWANG
  • Patent number: 9216776
    Abstract: A foldable vehicle which has a vehicle body divided into two sections of a front section and a rear section and has a size reduced by rotating the rear section of the divided vehicle body to be folded with respect to the front section thereof. The foldable vehicle includes a front vehicle body having a front wheel; a rear vehicle body having a rear wheel and having a lower front end rotatably connected to a lower rear end of the front vehicle body through a rotating shaft to rotate around the rotating shaft in a vertical direction, thereby being folded to overlap with the front vehicle body or unfolded; a folding drive unit for folding or unfolding the vehicle bodies by rotating the rear vehicle body with respect to the front vehicle body; and a control unit for controlling the operation of the folding drive unit.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: December 22, 2015
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: In Soo Suh, Ka Ram Hwang
  • Publication number: 20150183472
    Abstract: A foldable vehicle which has a vehicle body divided into two sections of a front section and a rear section and has a size reduced by rotating the rear section of the divided vehicle body to be folded with respect to the front section thereof. The foldable vehicle includes a front vehicle body having a front wheel; a rear vehicle body having a rear wheel and having a lower front end rotatably connected to a lower rear end of the front vehicle body through a rotating shaft to rotate around the rotating shaft in a vertical direction, thereby being folded to overlap with the front vehicle body or unfolded; a folding drive unit for folding or unfolding the vehicle bodies by rotating the rear vehicle body with respect to the front vehicle body; and a control unit for controlling the operation of the folding drive unit.
    Type: Application
    Filed: May 19, 2014
    Publication date: July 2, 2015
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: In Soo SUH, Ka Ram Hwang