Patents by Inventor Keen Yong Walter Loh

Keen Yong Walter Loh 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).

  • Conversion circuit for converting data of signal line between an air-conditioner and a computer
    Patent number: 8097841
    Abstract: A circuit for converting data of a signal line in the form of logical pulses of current to RS232 level voltages between an air-conditioner and a computer is described. The conversion circuit is able to troubleshoot the communication signals between the indoor unit and outdoor unit of an air-conditioner.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: January 17, 2012
    Assignee: OYL Research and Development Centre Sdn. Bhd.
    Inventor: Keen Yong Walter Loh
  • Conversion Circuit
    Publication number: 20090175624
    Abstract: A circuit for converting data of a signal line in the form of logical pulses of current to RS232 level voltages between an air-conditioner and a computer is described. The conversion circuit is able to troubleshoot the communication signals between the indoor unit and outdoor unit of an air-conditioner.
    Type: Application
    Filed: March 11, 2008
    Publication date: July 9, 2009
    Applicant: OYL RESEARCH AND DEVELOPMENT CENTRE SDN. BHD.
    Inventor: Keen Yong Walter Loh