Patents by Inventor Hsien-Lung Yeh

Hsien-Lung Yeh 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).

  • Personal digital assistant with removable cover pack
    Publication number: 20030224834
    Abstract: A personal digital assistant with removable cover pack. The personal digital assistant comprises a base unit and a cover pack. The cover pack is disposed on the base unit in a removable manner, and includes a battery electrically coupled to the base unit. The battery provides power to the base unit and the cover pack.
    Type: Application
    Filed: September 19, 2002
    Publication date: December 4, 2003
    Inventor: Hsien-Lung Yeh