Patents by Inventor Jee Rak CHOI

Jee Rak 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: 11555906
    Abstract: An ultrasonic includes: a piezoelectric layer; an absorbing layer disposed at a lower portion of the piezoelectric layer, configured to absorb an acoustic signal; and a connection part disposed between the piezoelectric layer and the absorbing layer. The connection part may deform at least partially so that a plurality of acoustic signals radiated from the piezoelectric layer due to the connection part have different magnitudes. In the case of the ultrasonic probe, since the magnitude of the acoustic energy radiated from the center of the ultrasonic probe is larger than the magnitude of the acoustic energy radiated from the side of the ultrasonic probe, the directivity of the ultrasonic signal is improved and a side lobe is decreased. In addition, an apodization effect capable of suppressing overlapping between adjacent phases can be obtained by using a difference in the magnitude of the acoustic energy to be radiated.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: January 17, 2023
    Assignee: SAMSUNG MEDISON CO. LTD.
    Inventors: In Seong Song, Jong-sun Ko, Yong Jae Kim, Won Hee Lee, Jin Woo Jung, Jee Rak Choi, Yoon Sung Kyung, Seung Hyun Kim, Ji Su Kim, Joong Hyun Park, Jin Hwan Park, Kyung Min Lee
  • Publication number: 20200237340
    Abstract: An ultrasonic includes: a piezoelectric layer; an absorbing layer disposed at a lower portion of the piezoelectric layer, configured to absorb an acoustic signal; and a connection part disposed between the piezoelectric layer and the absorbing layer. The connection part may deform at least partially so that a plurality of acoustic signals radiated from the piezoelectric layer due to the connection part have different magnitudes. In the case of the ultrasonic probe, since the magnitude of the acoustic energy radiated from the center of the ultrasonic probe is larger than the magnitude of the acoustic energy radiated from the side of the ultrasonic probe, the directivity of the ultrasonic signal is improved and a side lobe is decreased. In addition, an apodization effect capable of suppressing overlapping between adjacent phases can be obtained by using a difference in the magnitude of the acoustic energy to be radiated.
    Type: Application
    Filed: July 19, 2017
    Publication date: July 30, 2020
    Inventors: In Seong SONG, Jong-sun KO, Yong Jae KIM, Won Hee LEE, Jin Woo JUNG, Jee Rak CHOI, Yoon Sung KYUNG, Seung Hyun KIM, Ji Su KIM, Joong Hyun PARK, Jin Hwan PARK, Kyung Min LEE