Patents by Inventor James Welch Taylor

James Welch Taylor 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: 6566030
    Abstract: A method of imaging acids in chemically amplified photoresists involves exposing to radiation a chemically amplified photoresist comprising a pH-dependent fluorophore. Upon exposure to radiation, such as deep-UV radiation, the chemically amplified photoresist produces an acid, which is then visualized by the fluorescence of the pH-dependent fluorophore. An image is generated from the fluorescence of the pH-dependent fluorophore, thus providing a map of the location of the acid in the photoresist. The images are able to be visualized prior to a post-exposure bake of the resist composition. Chemically amplified photoresists comprising pH-dependent fluorophores are useful in the practice of the present invention. The method finds particular use in examining the efficiency of photoacid generators in chemically amplified photoresists, in that it allows the practitioner the ability to directly determine the amount of acid generated within the photoresist.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: May 20, 2003
    Assignees: Yale University, Wisconsin Alumni Research Foundation
    Inventors: Robert David Grober, Scott Josef Bukofsky, Paul Michael Dentinger, James Welch Taylor
  • Patent number: 6376149
    Abstract: A method of imaging acids in chemically amplified photoresists involves exposing to radiation a chemically amplified photoresist comprising a pH-dependent fluorophore. Upon exposure to radiation, such as deep-UV radiation, the chemically amplified photoresist produces an acid, which is then visualized by the fluorescence of the pH-dependent fluorophore. An image is generated from the fluorescence of the pH-dependent fluorophore, thus providing a map of the location of the acid in the photoresist. The images are able to be visualized prior to a post-exposure bake of the resist composition. Chemically amplified photoresists comprising pH-dependent fluorophores are useful in the practice of the present invention. The method finds particular use in examining the efficiency of photoacid generators in chemically amplified photoresists, in that it allows the practitioner the ability to directly determine the amount of acid generated within the photoresist.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: April 23, 2002
    Assignees: Yale University, Wisconsin Alumni Research Foundation
    Inventors: Robert David Grober, Scott Josef Bukofsky, Paul Michael Dentinger, James Welch Taylor
  • Publication number: 20020042019
    Abstract: A method of imaging acids in chemically amplified photoresists involves exposing to radiation a chemically amplified photoresist comprising a pH-dependent fluorophore. Upon exposure to radiation, such as deep-UV radiation, the chemically amplified photoresist produces an acid, which is then visualized by the fluorescence of the pH-dependent fluorophore. An image is generated from the fluorescence of the pH-dependent fluorophore, thus providing a map of the location of the acid in the photoresist. The images are able to be visualized prior to a post-exposure bake of the resist composition. Chemically amplified photoresists comprising pH-dependent fluorophores are useful in the practice of the present invention. The method finds particular use in examining the efficiency of photoacid generators in chemically amplified photoresists, in that it allows the practitioner the ability to directly determine the amount of acid generated within the photoresist.
    Type: Application
    Filed: October 31, 2001
    Publication date: April 11, 2002
    Inventors: Robert David Grober, Scott Josef Bukofsky, Paul Michael Dentinger, James Welch Taylor
  • Patent number: 6162592
    Abstract: Methods of fabricating microelectronic devices comprise applying compositions comprising salt additives and basic components to resists to decrease the surface roughness of the resists and form the microelectronic devices having the resists present therein.
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: December 19, 2000
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: James Welch Taylor, Geoffrey William Reynolds