Patents by Inventor Gurtel S. Sandhu

Gurtel S. Sandhu 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).

  • Publication number: 20100320384
    Abstract: A method that may be applied to imaging and identifying defects and contamination on the surface of an integrated circuit is described. An energetic beam, such as an electron beam, may be directed at a selected IC location having a layer of a solid, fluid, or gaseous reactive material formed over the surface. The energetic beam disassociates the reactive material in the region into chemical radicals that either chemically etch the surface preferentially, or deposit a thin layer of a conductive material over the local area around the energetic beam. The surface may be examined as various layers are selectively etched to decorate defects and/or as various layers are locally deposited in the area around the energetic beam. SEM imaging and other analytic methods may be used to identify the problem more easily.
    Type: Application
    Filed: August 26, 2010
    Publication date: December 23, 2010
    Inventors: Mark J. Williamson, Paul M. Johnson, Shawn D. Lyonsmith, Gurtel S. Sandhu, Justin R. Arrington