Patents by Inventor Leif Lee

Leif Lee 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).

  • Double-layer water-proof zipper
    Patent number: 6092266
    Abstract: A double-layer water-proof zipper in which the slide has an additional second interlocking unit moved with the slide to close a water-proof layer so as not to let rain pass through the interlocked teeth of the zipper tape unit of the zipper. The water-proof layer includes two water-proof tapes, the water-proof tapes each having two longitudinally extended parallel grooves and two longitudinally extended protruding portions respectively raised along said parallel grooves at one side for interlocking.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: July 25, 2000
    Assignee: Xiang Good Inc. Corp. Co., Ltd.
    Inventor: Leif Lee
  • Covering panel making process
    Patent number: 5284542
    Abstract: A process is disclosed for making a covering panel for a portable case, the process including a step of bonding a lining and a sheet of foamed EVA by an adhesive agent then cutting it into base panels according to the desired sizes, a step of bonding a face layer to each base panel by a layer of polyethylene through the process of heating and pressing and then punching each panel into the desired shape.
    Type: Grant
    Filed: January 4, 1993
    Date of Patent: February 8, 1994
    Inventor: Leif Lee