Patents by Inventor Lien Fon Chang

Lien Fon Chang 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).

  • Spring hinge for glasses
    Patent number: 7581289
    Abstract: A spring hinge for eyeglasses: the glasses including a central part and side pieces, a hinge element comprising at least one hinge eyelet, a spring device interacting with the hinge element, a housing containing a cavity which at least partially accommodates the spring device and the hinge element. The hinge element is arranged in a displaceable manner within the housing. A guide region for the hinge element, and at least one section of the guide region can be arranged outside the cavity.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: September 1, 2009
    Assignees: Obe Ohnmacht & Baumgartner GmbH & Co. KG
    Inventor: Lien Fon Chang
  • Spring hinge for glasses
    Patent number: 7318252
    Abstract: A spring hinge for eyeglasses: the glasses including a central part and side pieces, a hinge element comprising at least one hinge eyelet, a spring device interacting with the hinge element, a housing containing a cavity which at least partially accommodates the spring device and the hinge element. The hinge element is arranged in a displaceable manner within the housing. A guide region for the hinge element, and at least one section of the guide region can be arranged outside the cavity.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: January 15, 2008
    Assignees: OBE Ohnmacht & Baumgartner GmbH & Co., Ching Lan
    Inventor: Lien Fon Chang