Patents by Inventor Tsai Huo-Lu

Tsai Huo-Lu 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).

  • Patent number: 6545232
    Abstract: A thin type light permeable keyboard includes a plurality of keys, a plurality of bridge structures, a frame board, a luminescence board, a film circuit board, and a base board. Each of the light permeable keys has a top face in turn coated with a light permeable substrate layer, a light impermeable coating layer, and a light permeable protection layer. Each of the bridge structures is pivoted between each of the keys and the frame board. The luminescence board mounted between the frame board and the film circuit board may function as a luminous member that may mate with the light permeable frame board, elastic members and keys to indicate the sculptured characters, symbols, numbers or patterns on the keys, thereby facilitating the user operating the computer in the dark site.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: April 8, 2003
    Assignee: Sunrex Technology Corp.
    Inventor: Tsai Huo-Lu