Patents by Inventor Edward Winston Conrad

Edward Winston Conrad 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).

  • Method of forming sharp corners in a photoresist layer
    Patent number: 6238850
    Abstract: A method of forming an image having reduced comer rounding in a photoresist layer is provided which comprises exposing a photoresist layer to a first mask having a first image, said first image having at least two edges; exposing said photoresist layer to a second mask having a second image, said second image having at least two edges, the second image edges being substantially rotated relative to the first image edges to produce a latent image in said photoresist layer having edges substantially rotated relative to the first and second image edges; and developing the photoresist layer to produce said image.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: May 29, 2001
    Assignee: International Business Machines Corp.
    Inventors: Orest Bula, Daniel Cole, Edward Winston Conrad, William Charles Leipold