Patents by Inventor Philip K. N. Loh

Philip K. N. Loh 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).

  • Hand held calculator having a retractable cover
    Patent number: 5530234
    Abstract: A portable, hand held, electronic calculator assembly has a retractable cover slidably mounted to a calculator. The calculator has a front with a keypad and display, and a back. The cover has an inner surface and an exposed outer surface. The cover is movable relative to the calculator between a first position where the cover inner surface is juxtaposed to the calculator front, thereby protecting the keypad and display, and a second position where the cover inner surface is juxtaposed to the calculator back.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: June 25, 1996
    Assignee: Hewlett-Packard Company
    Inventors: Philip K. N. Loh, Soo H. Quek