Patents by Inventor Zhaokan Zhu

Zhaokan Zhu 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).

  • Light guide plate, light guide key plate and method for manufacturing the light guide key plate
    Patent number: 8212169
    Abstract: A light guide key plate includes a light guide plate (1). The light guide plate (1) has a plate body (11) with a plurality of keyholes (12). The plate body (11) is formed with flow passages (13) at one side thereof for communicating with the adjacent keyholes (12). The plate body (11) is also formed with overflow grooves (14) at one side thereof with the flow passages (13), and the overflow grooves (14) are extend inwardly from the edge of the plate body (11) and are communicated with the keyholes (12).
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: July 3, 2012
    Assignee: BYD Company Ltd.
    Inventor: Zhaokan Zhu
  • LIGHT GUIDE PLATE, LIGHT GUIDE KEY PLATE AND METHOD FOR MANUFACTURING THE LIGHT GUIDE KEY PLATE
    Publication number: 20100326807
    Abstract: A light guide key plate includes a light guide plate (1). The light guide plate (1) has a plate body (11) with a plurality of keyholes (12). The plate body (11) is formed with flow passages (13) at one side thereof for communicating with the adjacent keyholes (12). The plate body (11) is also formed with overflow grooves (14) at one side thereof with the flow passages (13), and the overflow grooves (14) are extend inwardly from the edge of the plate body (11) and are communicated with the keyholes (12).
    Type: Application
    Filed: December 27, 2007
    Publication date: December 30, 2010
    Inventor: Zhaokan Zhu