Patents Assigned to EPCo., Inc.
  • Patent number: 6998940
    Abstract: A component operating with bulk acoustic waves has a carrier substrate, a thin-film resonator and an acoustic mirror arranged between the resonator and carrier substrate. The acoustic mirror is formed by at least one high acoustic impedance layer, which is covered by a low acoustic impedance layer and the uppermost low impedance acoustic layer is planarized to form a flat planar surface on which the thin-film resonator is formed.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: February 14, 2006
    Assignee: EPCOS Inc.
    Inventor: Thomas Metzger
  • Patent number: D275886
    Type: Grant
    Filed: February 11, 1982
    Date of Patent: October 9, 1984
    Assignee: EPCo., Inc.
    Inventors: Marvin L. Sheward, Michael L. Sheward