Patents by Inventor Kum-Gil Sung

Kum-Gil Sung 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).

  • Electro-rheological fluid comprising dried water-soluble starch as a conductive particle
    Patent number: 6635189
    Abstract: The ER fluid comprising water-soluble starch as conductive particles contains less than 5 wt % water. The ER fluid of the present invention comprises water-soluble starch as a conductive particle which is dispersed in non-conductive media. The ER fluid of the present invention exhibits a considerable ER effect, even though the amount of water contained in the ER fluid is reduced. Thus, it can be widely applicable to water-sensitive damping devices and power devices such as a suspension system, a vibration damper or an engine mount, a break, a clutch, and so forth. And it is feasible for various fields such as an automatic and an aerospace industry.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: October 21, 2003
    Assignee: Agency for Defense Development
    Inventors: Moon-Suk Suh, Min-Jae Shin, Kyo-Jun Choi, In-sik Han, Sun-Kyu Jeong, Seung-Bok Choi, Kum-Gil Sung, Ho-Guen Lee
  • Electro-rheological fluid comprising dried water-soluble starch as a conductive particle
    Publication number: 20010015421
    Abstract: The ER fluid comprising water-soluble starch as conductive particles contains less than 5 wt % water. The ER fluid of the present invention comprises water-soluble starch as a conductive particle which is dispersed in non-conductive media. The ER fluid of the present invention exhibits a considerable ER effect, even though the amount of water contained in the ER fluid is reduced. Thus, it can be widely applicable to water-sensitive damping devices and power devices such as a suspension system, a vibration damper or an engine mount, a break, a clutch, and so forth. And it is feasible for various fields such as an automatic and an aerospace industry.
    Type: Application
    Filed: February 16, 2001
    Publication date: August 23, 2001
    Applicant: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Moon-Suk Suh, Min-Jae Shin, Kyo-Jun Choi, In-Sik Han, Sun-Kyu Jeong, Seung-Bok Choi, Kum-Gil Sung, Ho-Guen Lee