Patents by Inventor Karen E. Trovalli

Karen E. Trovalli 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).

  • Stripping and cleaning compositions for microelectronics
    Patent number: 7928046
    Abstract: Aqueous, silicate free, cleaning compositions of about pH 9 or below and method of using the cleaning compositions for cleaning microelectronic substrates, which compositions are able to essentially completely clean such substrates and produce essentially no metal corrosion of the metal elements of such substrates. The aqueous cleaning compositions of this invention have (a) water, (b) at least one of ammonium and quaternary ammonium ions and (c) at least one of hypophosphite (H2PO2?) and/or phosphite (HPO32?) ions. The cleaning compositions also may contain fluoride ions. Optionally, the composition may contain other components such as organic solvents, oxidizing agent, surfactants, corrosion inhibitors and metal complexing agents.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: April 19, 2011
    Assignee: Avantor Performance Materials, Inc.
    Inventors: Joseph M. Ilardi, David C. Skee, Sean M. Kane, Karen E. Trovalli