Patents by Inventor Phu H. Nguyen

Phu H. Nguyen 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).

  • Method for inserting an intraocular lens
    Patent number: 8425595
    Abstract: An injector for inserting an intraocular lens into an eye includes a lumen. The lumen can include a terminal portion at a distal end and a proximal portion juxtaposed with the terminal portion. An injector plunger can be disposed within the lumen for generating a driving force on the intraocular lens. The injector can include a lens frictional force that has a first value when the lens is at a first location within the proximal portion and a second value when the lens is at a second location within the terminal portion. The first value can be smaller than the second value. In some embodiments, the lens frictional force increases abruptly from the first value to the second value as the lens approaches the distal end of the lumen.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: April 23, 2013
    Assignee: Visiogen, Inc.
    Inventors: George Tsai, Tuan Anh Nguyen, Phu H. Nguyen, Scott Evans
  • Method and Device for Inserting an Intraocular Lens
    Publication number: 20090234366
    Abstract: An injector for inserting an intraocular lens into an eye includes a lumen. The lumen can include a terminal portion at a distal end and a proximal portion juxtaposed with the terminal portion. An injector plunger can be disposed within the lumen for generating a driving force on the intraocular lens. The injector can include a lens frictional force that has a first value when the lens is at a first location within the proximal portion and a second value when the lens is at a second location within the terminal portion. The first value can be smaller than the second value. In some embodiments, the lens frictional force increases abruptly from the first value to the second value as the lens approaches the distal end of the lumen.
    Type: Application
    Filed: March 12, 2008
    Publication date: September 17, 2009
    Inventors: George Tsai, Tuan Anh Nguyen, Phu H. Nguyen, Scott Evans