Patents by Inventor Leisa B. Davenhall

Leisa B. Davenhall 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: 7381694
    Abstract: Composition and method for removing photoresist materials from electronic components. The composition is a mixture of at least one dense phase fluid and at least one dense phase fluid modifier. The method includes exposing a substrate to at least one pulse of the composition in a supercritical state to remove photoresist materials from the substrate.
    Type: Grant
    Filed: January 11, 2005
    Date of Patent: June 3, 2008
    Assignee: Los Alamos National Security, LLC
    Inventors: Leisa B. Davenhall, James B. Rubin, Craig M. V. Taylor
  • Patent number: 6846789
    Abstract: Composition and method for removing photoresist materials from electronic components. The composition is a mixture of at least one dense phase fluid and at least one dense phase fluid modifier. The method includes exposing a substrate to at least one pulse of the composition in a supercritical state to remove photoresist materials from the substrate.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: January 25, 2005
    Assignee: The Regents of the University of California
    Inventors: Leisa B. Davenhall, James B. Rubin, Craig M. V. Taylor
  • Publication number: 20030181343
    Abstract: Composition and method for removing photoresist materials from electronic components. The composition is a mixture of at least one dense phase fluid and at least one dense phase fluid modifier. The method includes exposing a substrate to at least one pulse of the composition in a supercritical state to remove photoresist materials from the substrate.
    Type: Application
    Filed: April 26, 2002
    Publication date: September 25, 2003
    Inventors: Leisa B. Davenhall, James B. Rubin, Craig M. V. Taylor
  • Patent number: 6403544
    Abstract: The invention is a combination of at least one dense phase fluid and at least one dense phase fluid modifier which can be used to contact substrates for electronic parts such as semiconductor wafers or chips to remove photoresist materials which are applied to the substrates during manufacture of the electronic parts. The dense phase fluid modifier is one selected from the group of cyclic, aliphatic or alicyclic compounds having the functional group: wherein Y is a carbon, oxygen, nitrogen, phosphorus or sulfur atom or a hydrocarbon group having from 1 to 10 carbon atoms, a halogen or halogenated hydrocarbon group having from 1 to 10 carbon atoms, silicon or a fluorinated silicon group; and wherein R1 and R2 can be the same or different substituents; and wherein, as in the case where X is nitrogen, R1 or R2 may not be present.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: June 11, 2002
    Assignee: The Regents of the University of California
    Inventors: Leisa B. Davenhall, James B. Rubin