Patents by Inventor Edmund P. Szwajkowski

Edmund P. Szwajkowski 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).

  • Non-chrome metal treatment composition
    Patent number: 7491274
    Abstract: Chromate-free treatments and compositions for applying a conversion or passivation coating for metals, more particularly zinc coated metal surfaces. The methods of the invention comprise contacting the requisite metal surface with a phosphonomethylated polyamine. Other aspects of the invention involve methods and compositions in which the following optional components can be included: fluoacid, silane, inorganic phosphorus, acid, latex film forming component and pH adjustment agent.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: February 17, 2009
    Assignee: Chemetall Corp.
    Inventors: William S. Carey, Michael T. Raab, Edmund P. Szwajkowski, Jeffrey I. Melzer
  • NOVEL NON-CHROME METAL TREATMENT COMPOSITION
    Publication number: 20090032140
    Abstract: Chromate-free compositions for applying a conversion or passivation coating for metals, more particularly zinc coated metal surfaces. The methods of the invention comprise contacting the requisite metal surface with a phosphonomethylated polyamine. Other aspects of the disclosed tech involve methods and compositions in which the following optional components can be included: fluoacid, silane, inorganic phosphorus, acid, latex film forming component and pH adjustment agent.
    Type: Application
    Filed: October 10, 2008
    Publication date: February 5, 2009
    Applicant: CHEMETALL CORP.
    Inventors: William S. Carey, Michael T. Raab, Edmund P. Szwajkowski, Jeffrey I. Melzer