Patents by Inventor Wen-Kai Chang

Wen-Kai 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).

  • Unmemory cold deformable plastic object prepared by drawing
    Publication number: 20020155239
    Abstract: A cold deformable and unmemory plastic object is disclosed, which can be prepared from one single plastic material by drawing a semi-crystalline or crystalline thermoplastic intermediate at a temperature lower than its melting point to an extent so that said intermediate loses its elasticity substantially. The unmemory plastic object of the present invention may be in the form of a bendable and twistable wire or tape for tying, a collapsible and foldable hollow tube for packing, or a thin rod for supporting, such as a stem of an artificial flower.
    Type: Application
    Filed: June 15, 2001
    Publication date: October 24, 2002
    Applicant: Kuo Paoch Chemical Co., Ltd.
    Inventors: Donald Shiou Tarng Wang, Yi-Jung Huang, Chih-Chiang Chen, Tin-Liou Huang, Wen-Kai Chang, Shun-Sian Huang
  • LED package
    Patent number: D668233
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: October 2, 2012
    Assignees: Silitek Electronic (Guangzhou) Co., Ltd., Lite-On Technology Corporation
    Inventors: Chien-Tung Huang, Chun-Chang Wu, Wen-Kai Chang