Patents by Inventor Robert J. Tweig

Robert J. Tweig 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).

  • Positive photoresist system for near-UV to visible imaging
    Patent number: 5272042
    Abstract: Disclosed is a positive photoresist. The photoresist has as its polymeric component a substantially water and base insoluble, photolabile polymer. The photoresist further includes a photo acid generator that is capable of forming a strong acid. This photo acid generator may be a sulfonate ester derived from a N-hydroxyamide, or a N-hydroxyimide. Finally, the photoresist composition includes an appropriate photosensitizer.
    Type: Grant
    Filed: September 17, 1991
    Date of Patent: December 21, 1993
    Assignee: International Business Machines Corporation
    Inventors: Robert D. Allen, William R. Brunsvold, Burton J. Carpenter, William D. Hinsberg, Joseph LaTorre, Michael G. McMaster, Melvin W. Montgomery, Wayne M. Moreau, Logan L. Simpson, Robert J. Tweig, Gregory M. Wallraff