Patents by Inventor Ronald Rutka

Ronald Rutka 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).

  • Purification of p-dioxanone
    Patent number: 8269025
    Abstract: The present disclosure provides methods for purifying p-dioxanone. In embodiments, crude p-dioxanone may be contacted with at least one isocyanate-functionalized scavenger. The at least one isocyanate-functionalized scavenger may react with hydroxyl compounds present with the crude p-dioxanone to form reaction products, in embodiments polyurethanes and/or polyureas, which may then be removed. The p-dioxanone thus obtained is of greater purity than the starting crude p-dioxanone.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: September 18, 2012
    Assignee: Tyco Healthcare Group LP
    Inventors: Nadya Belcheva, Trang Huynh, Darlene Nebinger, Ronald Rutka
  • PURIFICATION OF P-DIOXANONE
    Publication number: 20100004471
    Abstract: The present disclosure provides methods for purifying p-dioxanone. In embodiments, crude p-dioxanone may be contacted with at least one isocyanate-functionalized scavenger. The at least one isocyanate-functionalized scavenger may react with hydroxyl compounds present with the crude p-dioxanone to form reaction products, in embodiments polyurethanes and/or polyureas, which may then be removed. The p-dioxanone thus obtained is of greater purity than the starting crude p-dioxanone.
    Type: Application
    Filed: June 9, 2009
    Publication date: January 7, 2010
    Inventors: Nadya Belcheva, Trang Huynh, Darlene Nebinger, Ronald Rutka