Patents by Inventor Charles A. Lhota

Charles A. Lhota 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).

  • Process for inhibiting corrosion and removing contaminant from a surface during wafer dicing and composition useful therefor
    Patent number: 8580656
    Abstract: Adherence of contaminant residues or particles is suppressed, corrosion of exposed surfaces is substantially reduced or eliminated during the process of dicing a wafer by sawing. A fluoride-free aqueous composition comprising a dicarboxylic acid and/or salt thereof; a hydroxycarboxylic acid and/or salt thereof or amine group containing acid, a surfactant and deionized water is employed.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: November 12, 2013
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Terence Quintin Collier, Charles A. Lhota, David Barry Rennie, Rajkumar Ramamurthi, Madhukar Bhaskara Rao, Dnyanesh Chandrakant Tamboli
  • Process for Inhibiting Corrosion and Removing Contaminant from a Surface During Wafer Dicing and Composition Useful Therefor
    Publication number: 20100009517
    Abstract: Adherence of contaminant residues or particles is suppressed, corrosion of exposed surfaces is substantially reduced or eliminated during the process of dicing a wafer by sawing. A fluoride-free aqueous composition comprising a dicarboxylic acid and/or salt thereof; a hydroxycarboxylic acid and/or salt thereof or amine group containing acid, a surfactant and deionized water is employed.
    Type: Application
    Filed: July 8, 2009
    Publication date: January 14, 2010
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Terence Quintin Collier, Charles A. Lhota, David Barry Rennie, Rajkumar Ramamurthi, Madhukar Bhaskara Rao, Dnyanesh Chandrakant Tamboli