Patents by Inventor Xiu Fang Liu

Xiu Fang 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).

  • Intraocular lens
    Patent number: 6863687
    Abstract: An IOL described herein includes an optic and at least a first haptic and a second haptic connected to the optic and extending outwardly therefrom; each haptic is formed with either a frog leg configuration or a running leg configuration, which include a base adjacent the optic, a distal foot portion and an intermediate portion connected between the base and the distal foot, the base being connected to the intermediate portion through a first flexible elbow having an angle in a first circumferential direction relative to the to optic and the intermediate portion being connected to the distal foot portion by a second flexible elbow having an angle in a circumferential direction opposite to the first circumferential direction.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: March 8, 2005
    Inventors: Ran Sun, Xiu Fang Liu
  • INTRAOCULAR LENS
    Publication number: 20030220688
    Abstract: An IOL described herein includes an optic and at least a first haptic and a second haptic connected to the optic and extending outwardly therefrom; each haptic is formed with either a frog leg configuration or a running leg configuration, which include a base adjacent the optic, a distal foot portion and an intermediate portion connected between the base and the distal foot, the base being connected to the intermediate portion through a first flexible elbow having an angle in a first circumferential direction relative to the to optic and the intermediate portion being connected to the distal foot portion by a second flexible elbow having an angle in a circumferential direction opposite to the first circumferential direction.
    Type: Application
    Filed: February 28, 2003
    Publication date: November 27, 2003
    Inventors: Ran Sun, Xiu Fang Liu