Patents by Inventor Przem Pruszynski

Przem Pruszynski 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).

  • Method of preparing modified diallyl-N,N-disubstituted ammonium halide polymers
    Patent number: 7473334
    Abstract: A method of preparing a modified diallyl-N,N-disubstituted ammonium halide polymer and use of the polymer in combination with one or more high molecular weight, water soluble cationic, anionic, nonionic, zwitterionic or amphoteric polymers for increasing retention and drainage in a papermaking furnish.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: January 6, 2009
    Assignee: Nalco Company
    Inventors: Jane B. Wong Shing, Alessandra Gerli, Xavier S. Cardoso, Angela P. Zagala, Przem Pruszynski, Cathy C. Doucette
  • Method of preparing modified diallyl-N,N-disubstituted ammonium halide polymers
    Publication number: 20060084771
    Abstract: A method of preparing a modified diallyl-N,N-disubstituted ammonium halide polymer and use of the polymer in combination with one or more high molecular weight, water soluble cationic, anionic, nonionic, zwitterionic or amphoteric polymers for increasing retention and drainage in a papermaking furnish.
    Type: Application
    Filed: October 15, 2004
    Publication date: April 20, 2006
    Inventors: Jane Wong Shing, Alessandra Gerli, Xavier Cardoso, Angela Zagala, Przem Pruszynski, Cathy Doucette
  • Method of preparing modified diallyl-N,N-disubstituted ammonium halide polymers
    Publication number: 20060084772
    Abstract: A method of preparing a modified diallyl-N,N-disubstituted ammonium halide polymer and use of the polymer in combination with one or more high molecular weight, water soluble cationic, anionic, nonionic, zwitterionic or amphoteric polymers for increasing retention and drainage in a papermaking furnish.
    Type: Application
    Filed: October 15, 2004
    Publication date: April 20, 2006
    Inventors: Jane Wong Shing, Alessandra Gerli, Xavier Cardoso, Angela Zagala, Przem Pruszynski, Cathy Doucette