Patents by Inventor Zhan-Ling Liu

Zhan-Ling Liu 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).

  • Pointing device with flexible shape
    Patent number: 7362309
    Abstract: A pointing device includes a housing, a main body and an input section. The housing contains an upper cover and two extending arms, which extended from the upper cover. The main body is housed under the upper cover and located between the two extending arms of the housing. The input section is placed on the front half of the main body for generating (inputting) key signals. The front half (the input section) and the back half of the main body form a smooth surface.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: April 22, 2008
    Assignee: Darfon Electronics Corp.
    Inventors: Shih-Hung Chao, Zhan-Ling Liu
  • ROLLER AND FOUR WAY ROLLER ASSEMBLY
    Publication number: 20070234828
    Abstract: A roller and a four way roller assembly is disclosed. The roller includes an axle, a wheel, and at least a flexible connecting portion. The flexible portion connects to the axle and the wheel, thereby the axle moves in the wheel. The four way roller assembly includes a base, a roller container and a roller. The roller container is movably installed on the base. The roller rotates in the roller container via the axle. The axle presses a first sensor on the base.
    Type: Application
    Filed: March 20, 2007
    Publication date: October 11, 2007
    Applicant: DARFON ELECTRONICS CORP.
    Inventors: Chun-Chung Huang, Zhan-Ling Liu
  • POINTING DEVICE WITH FLEXIBLE SHAPE
    Publication number: 20040169640
    Abstract: A pointing device includes a housing, a main body and an input section. The housing contains an upper cover and two extending arms, which extended from the upper cover. The main body is housed under the upper cover and located between the two extending arms of the housing. The input section is placed on the front half of the main body for generating (inputting) key signals. The front half (the input section) and the back half of the main body form a smooth surface.
    Type: Application
    Filed: February 19, 2004
    Publication date: September 2, 2004
    Inventors: Shih-Hung Chao, Zhan-Ling Liu