Patents by Inventor Po-Chien Yeh

Po-Chien 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).

  • RETICLE STORAGE APPARATUS AND SEMICONDUCTOR ELEMENT STORAGE APPARATUS
    Publication number: 20090114563
    Abstract: The present invention provides a reticle storage apparatus and a semiconductor element storage apparatus each equipped with a filtering device. The reticle storage apparatus or the semiconductor element storage apparatus is constructed from a first cover and a second cover, which are assembled together to form an inner space therebetween for accommodating a reticle or a semiconductor element. The second cover of the reticle storage apparatus or the semiconductor element storage apparatus comprises at least one aperture for communicating the inner space and an outer of the reticle storage apparatus or the semiconductor element storage apparatus and a filtering device for covering the aperture.
    Type: Application
    Filed: September 10, 2008
    Publication date: May 7, 2009
    Inventor: Po-Chien Yeh