Patents by Inventor Yong-Hak Choi

Yong-Hak Choi 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: 12102442
    Abstract: Provided is a device for measuring an amount of perspiration of respective body parts of a person using a change in brightness, including: a temperature controller which raises temperature of a subject and induces sweating; a covering which is coated with a perspiration reagent and is in contact with a skin of the subject, wherein the perspiration reagent absorbs perspiration and changes its color in response to perspiration; a light irradiator which irradiates light to the covering; a reflected light collector which collects reflected light reflected from the covering; a brightness change measurer which measures a change in brightness of the reflected light collected by the reflected light collector; and a perspiration amount converter which converts the change in brightness to an amount of perspiration secreted from respective body parts of the subject.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: October 1, 2024
    Inventor: Yong Hak Choi
  • Publication number: 20220079508
    Abstract: Provided is a device for measuring an amount of perspiration of respective body parts of a person using a change in brightness, including: a temperature controller which raises temperature of a subject and induces sweating; a covering which is coated with a perspiration reagent and is in contact with a skin of the subject, wherein the perspiration reagent absorbs perspiration and changes its color in response to perspiration; a light irradiator which irradiates light to the covering; a reflected light collector which collects reflected light reflected from the covering; a brightness change measurer which measures a change in brightness of the reflected light collected by the reflected light collector; and a perspiration amount converter which converts the change in brightness to an amount of perspiration secreted from respective body parts of the subject.
    Type: Application
    Filed: August 9, 2019
    Publication date: March 17, 2022
    Inventor: Yong Hak CHOI
  • Patent number: 7209731
    Abstract: A member protection method using a mobile communication terminal is provided, and in particular a member protection method using a mobile communication terminal is provided which is capable of quickly coping with an emergency situation in such a manner that when a certain situation, for example, a member with a mobile communication terminal having a positioning function rides in taxi or is in a strange building, and moving information such as an engaged time when the situation is ended and a taxi registered number is registered in a central control server, a member's position is recognized and temporarily stored. In the case that a movement lifting notice is not received from a member until an engaged time, a certain moving information such as a member's position is transmitted to a mobile communication terminal of a security staff.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: April 24, 2007
    Inventors: Yong-Hak Choi, Jong-Sung Park, Se-Joong Oh
  • Publication number: 20070032218
    Abstract: The present invention relates to a notice method for emergent dispatch using a mobile communication device, and in particular to a notice method for emergent dispatch in which a mobilization service company is capable of accurately mobilizing to a customer's position when a customer who stays at a certain place inputs a staying place and staying time, and transmits an emergency signal within the staying time.
    Type: Application
    Filed: October 17, 2003
    Publication date: February 8, 2007
    Inventor: Yong-Hak Choi
  • Publication number: 20050170810
    Abstract: The present invention relates to a member protection method using a mobile communication terminal, and in particular to a member protection method using a mobile communication terminal which is capable of quickly coping with an emergency situation in such a manner that when a certain situation, for example, a member with a mobile communication terminal having a positioning function rides on a taxi or in a strange building, and moving information such as an engaged time when the situation is ended and a taxi registered number is registered in a central control server, a member's position is recognized and temporarily stored, and in the case that a movement lifting notice is not received from a member until an engaged time, a certain moving information such as a member's position is transmitted to a mobile communication terminal of a security staff.
    Type: Application
    Filed: February 14, 2003
    Publication date: August 4, 2005
    Inventors: Yong-Hak Choi, Jong-Sung Park, Se-Joong Oh