Patents by Inventor Kwok Chi Cheng

Kwok Chi Cheng 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).

  • CONTROLLING A OXYGEN LIQUEFACTION SYSTEM RESPONSIVE TO A DISTURBANCE IN SUPPLIED POWER
    Publication number: 20130019632
    Abstract: Normal operation of an oxygen liquefaction system (100) may be established responsive to a deviation in current supplied thereto. Current being supplied to a compressor (118) included in the oxygen liquefaction system may be monitored. The compressor may be deactivated responsive to commencement of a current level deviation event in the monitored current. The compressor may be energized responsive to cessation of the current level deviation event in the monitored current. Performance characteristics of the oxygen liquefaction system may be identified.
    Type: Application
    Filed: February 24, 2011
    Publication date: January 24, 2013
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Tory Deane Werne, Kwok Chi Cheng