Patents by Inventor Jung R. Yun

Jung R. Yun 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).

  • Microwave dielectric ceramic composition
    Patent number: 5401702
    Abstract: A microwave dielectric ceramic composition exhibiting superior high frequency characteristics, particular temperature coefficients suitable for materials for cellular phones, which composition comprises approximately 0.1 to approximately 0.3 mole fraction of CaTiO.sub.3 having a negative temperature coefficient and approximately 0.9 to approximately 0.7 mole fraction of (Li.sub.1/2 Nd.sub.1/2)TiO.sub.3 having a positive temperature coefficient, and optionally a predetermined amount of an additive, preferably Nd.sub.2 O.sub.3, Li.sub.2 CO.sub.3, Na.sub.2 CO.sub.3 and CeO.sub.2.
    Type: Grant
    Filed: January 5, 1994
    Date of Patent: March 28, 1995
    Assignee: Korea Institute of Science and Technology
    Inventors: Kyung Y. Kim, Jung R. Yun, Suk K. Hong, Kwang H. Chang