Patents Assigned to NEC Automation, Ltd.
  • Patent number: 4828165
    Abstract: An ashtray having a small electrode and a large electrode. A high voltage is applied between the two electrodes so that air is caused to flow from the small electrode to the large electrode and that the ionized particles of the smoke adhere to the large electrode. The large electrode is an ash reception plate. An auxiliary electrode is provided to connect electrically to the large electrode.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: May 9, 1989
    Assignee: NEC Automation, Ltd.
    Inventors: Minoru Watai, Yasukazu Nishimuro, Koichi Iwabuchi
  • Patent number: 4790861
    Abstract: An ashtray having a small electrode and a large electrode. A high voltage is applied between the two electrodes so that ions are produced to ionize smoke particles, air is caused to flow from the small electrode to the large electrode and the ionized smoke particles adhere to the large electrode. An auxiliary electrode is provided to connect electrically to the large electrode.
    Type: Grant
    Filed: June 11, 1987
    Date of Patent: December 13, 1988
    Assignee: NEC Automation, Ltd.
    Inventors: Minoru Watai, Yasukazu Nishimuro, Koichi Iwabuchi