Patents by Inventor David Ci

David Ci 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).

  • Ballast with battery backup
    Patent number: 9954390
    Abstract: An emergency battery backup ballast is configured so that it can be fully assembled but in a dormant condition. The emergency battery backup ballast commences normal operation when AC power is supplied to the ballast for the first time. Then if the AC power is removed, one or more lamps (56) which are connected to the output of the ballast can be powered by the battery (54).
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: April 24, 2018
    Assignee: Fulham Co., Ltd.
    Inventors: Xiaohong Chen, David Ci
  • BALLAST WITH BATTERY BACKUP
    Publication number: 20150380983
    Abstract: An emergency battery backup ballast is configured so that it can be fully assembled but in a dormant condition. The emergency battery backup ballast commences normal operation when AC power is supplied to the ballast for the first time. Then if the AC power is removed, one or more lamps (56) which are connected to the output of the ballast can be powered by the battery (54).
    Type: Application
    Filed: May 30, 2013
    Publication date: December 31, 2015
    Applicant: FULHAM COMPANY, LTD.
    Inventors: Xiaohong Chen, David Ci