Patents Assigned to Fujitsu Quantum Devices, Ltd.
  • Interdigital capacitor having a cutting target portion
    Patent number: 6903402
    Abstract: An interdigital capacitor includes a semiconductor substrate, and a pair of comb-like electrodes formed on the semiconductor substrate. At least one of the pair of comb-like electrodes includes a cutting target portion.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: June 7, 2005
    Assignee: Fujitsu Quantum Devices, Ltd.
    Inventor: Naoyuki Miyazawa
  • Optical semiconductor device
    Patent number: 6587604
    Abstract: An optical semiconductor device includes an optical modulator and an optical detector formed integrally on a common substrate to form an optical integrated circuit, wherein an optical beam spot conversion part is provided also integrally on the common substrate so as to connect an output end of the optical modulator and an input end of the optical detector.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: July 1, 2003
    Assignee: Fujitsu Quantum Devices, Ltd.
    Inventor: Shohgo Yamauchi