Patents by Inventor Chi-Wai Ko

Chi-Wai Ko 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).

  • Roller blind
    Patent number: D335604
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: May 18, 1993
    Assignee: Choon Nang Electrical Appliance Manufactory Limited
    Inventors: Tat-Nin Lui, Chi-Wai Ko