Patents by Inventor Sang-Gi Kang

Sang-Gi Kang 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).

  • Wafer grinding wheel
    Patent number: 11931861
    Abstract: A grinding wheel includes a plurality of wheel tips. The plurality of wheel tips include a plurality of diamond abrasive grains and a bonding material mixed with the diamond abrasive grains. The plurality of diamond abrasive grains have a ratio of a length in a long axis direction to a width in a short axis direction of 1:2.5 to 1:3.5 and includes edges or vertices having a grinding angle of 90° or less.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: March 19, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seong Gi Jeon, Sang Il Choi, Chang Su Jeong, Tae Gyu Kang
  • Apparatus and method for transmit leakage signal suppression in RFID reader
    Patent number: 8054161
    Abstract: A method and apparatus for suppressing a transmit leakage signal of a radio frequency identification (RFID) reader is provided. The apparatus includes: a first power distributor distributing a transmission signal to output a first transmission signal and a second transmission signal; a second power distributor distributing the second transmission signal to output a third transmission signal and a fourth transmission signal; a first amplitude/phase converter converting an amplitude and a phase of the first transmission signal to generate a first converted signal; a second amplitude/phase converter converting an amplitude and a phase of the third transmission signal to generate a second converted signal; a first power combiner combining the first converted signal with a first leakage signal generated in association with the fourth transmission signal; and a second power combiner combining the second converted signal with a second leakage signal generated in association with the fourth transmission signal.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: November 8, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Donghan Lee, Ji-Hoon Bae, Cheng-Hao Quan, Kwang-Soo Cho, Gil Young Choi, Jong-Suk Chae, Sang-Gi Kang
  • APPARATUS AND METHOD FOR TRANSMIT LEAKAGE SIGNAL SUPPRESSION IN RFID READER
    Publication number: 20100026460
    Abstract: A method and apparatus for suppressing a transmit leakage signal of a radio frequency identification (RFID) reader is provided. The apparatus includes: a first power distributor distributing a transmission signal to output a first transmission signal and a second transmission signal; a second power distributor distributing the second transmission signal to output a third transmission signal and a fourth transmission signal; a first amplitude/phase converter converting an amplitude and a phase of the first transmission signal to generate a first converted signal; a second amplitude/phase converter converting an amplitude and a phase of the third transmission signal to generate a second converted signal; a first power combiner combining the first converted signal with a first leakage signal generated in association with the fourth transmission signal; and a second power combiner combining the second converted signal with a second leakage signal generated in association with the fourth transmission signal.
    Type: Application
    Filed: December 4, 2008
    Publication date: February 4, 2010
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Donghan LEE, Ji-Hoon BAE, Cheng-Hao QUAN, Kwang-Soo CHO, Gil Young CHOI, Jong-Suk CHAE, Sang-Gi KANG