Patents by Inventor Gregory Michael Wallraff

Gregory Michael Wallraff 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).

  • Patent number: 6177228
    Abstract: The present invention relates to a radiation-sensitive resist composition comprising a radiation-sensitive acid generator and a copolymer binder formed by the reaction of (a) an acrylate or methacrylate monomer having a photogenerated acid cleavable substituent and (b) an acrylate or methacrylate monomer having a polar non photoacid cleavable substituent.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: January 23, 2001
    Assignee: International Business Machines Corporation
    Inventors: Robert David Allen, Richard Anthony DiPietro, Ratnam Sooriyakumaran, Thomas I. Wallow, Gregory Michael Wallraff
  • Patent number: 6165678
    Abstract: A novel radiation-sensitive lithographic photoresist composition is provided which has improved sensitivity and resolution. The composition comprises a photosensitive acid generator and an acrylate or methacrylate copolymer. The copolymer contains first monomeric units having polar pendant groups and second monomeric units containing photoacid-cleavable ester groups. The polar pendant groups preferably comprise C.sub.6 -C.sub.12 alicyclic substituents containing a polar moiety R*, wherein the alicyclic substituents are bound through a linker moiety to the polymer backbone. Other monomeric units may be included as well. A process for using the composition to generate resist images on a substrate, i.e., in the manufacture of integrated circuits or the like.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: December 26, 2000
    Assignee: International Business Machines Corporation
    Inventors: Robert David Allen, Richard Anthony DiPietro, Ratnam Sooriyakumaran, Thomas I. Wallow, Gregory Michael Wallraff
  • Patent number: 5985524
    Abstract: The invention relates to a process for forming bilayer resist images with a chemically-amplified, radiation-sensitive bilayer resist. The bilayer resist is disposed on a substrate and comprises (i) a top imaging layer comprising a radiation-sensitive acid generator and a vinyl polymer having an acid-cleavable silylethoxy group and (ii) an organic underlayer. The bilayer resist is used in the manufacture of integrated circuits.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: November 16, 1999
    Assignee: International Business Machines Incorporated
    Inventors: Robert David Allen, Donald Clifford Hofer, Ratnam Sooriyakumaran, Gregory Michael Wallraff
  • Patent number: 5866306
    Abstract: The present invention relates to the use of certain polyalkylphenyl silanes in photoresists to generate positive tone resist images. The polyalkylphenyl silanes have the formula: ##STR1## where R is C2-C12 alkyl and n is about 150 to 7000.
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: February 2, 1999
    Assignee: International Business Machines Corporation
    Inventors: Robert Dennis Miller, Gregory Michael Wallraff, Mark Edwin Baier
  • Patent number: 5786131
    Abstract: The present invention relates to a process for generating a resist image on a substrate utilizing a resist composition comprising (a) a radiation-sensitive acid generator, (b) a substituted androstane, and (c) a copolymer acrylate binder. The resist image is made using deep ultraviolet radiation.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: July 28, 1998
    Assignee: International Business Machines Corporation
    Inventors: Robert David Allen, Richard Anthony DiPietro, Gregory Michael Wallraff
  • Patent number: 5747223
    Abstract: An improved photoimagable cationically polymerizable epoxy based coating material is provided, that is suitable for use on a variety of substrates including epoxy-glass laminate boards cured with dicyandiamide. The material includes an epoxy resin system consisting essentially of between about 10% and about 80% by weight of a polyol resin which is a condensation product of epichlorohydrin and bisphenol A having a molecular weight of between about 40,000 and 130,000; and between about 35% and 72% by weight of an epoxidized glycidyl ether of a brominated bisphenol A having a softening point of between about 60.degree. C. and about 110.degree. C. and a molecular weight of between about 600 and 2,500. Optionally, a third resin may be added to the resin system. To this resin system is added about 0.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: May 5, 1998
    Assignee: International Business Machines Corporation
    Inventors: Robert D. Allen, Richard Allen Day, Donald Herman Glatzel, William Dinan Hinsberg, John Richard Mertz, David John Russell, Gregory Michael Wallraff
  • Patent number: 5665527
    Abstract: The invention relates to a process for generating a negative tone resist image comprising the steps of (1) coating a substrate with a film of a polymeric composition comprising (i) a polymer, (ii) a photosensitive acid generator, and (iii) acid labile groups; (2) imagewise exposing the film to radiation to generate free acid; and (3) developing the image with critical fluid.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: September 9, 1997
    Assignee: International Business Machines Corporation
    Inventors: Robert David Allen, Gregory Michael Wallraff
  • Patent number: 5658734
    Abstract: The present invention relates to a process for synthesizing on a single substrate a plurality of chemical compounds having diverse structures. The process involves the use of a bilayer photoresist to build up selected regions of the array in a step wise fashion.
    Type: Grant
    Filed: October 17, 1995
    Date of Patent: August 19, 1997
    Assignee: International Business Machines Corporation
    Inventors: Phillip Joe Brock, William Dinan Hinsberg, Jeffrey William Labadie, Glenn McGall, Gregory Michael Wallraff