Patents by Inventor Eui-Wan Lee

Eui-Wan 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).

  • Wafer boat
    Patent number: 4355974
    Abstract: A wafer processing boat is provided with parallel slots that support each wafer at a slight angle with respect to vertical so that the wafers lean by gravity in a uniform manner and are thereby arranged in spaced parallel relationship. This enables the tolerances within the slots to be quite large with respect to the width of the wafer edges thus facilitating insertion and removal of the wafers while minimizing wafer damage and increasing wafer processing uniformity.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: October 26, 1982
    Assignee: ASQ Boats, Inc.
    Inventor: Eui-Wan Lee