Patents by Inventor Hans-Juergen Pitowski

Hans-Juergen Pitowski 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).

  • Solvent-spun cellulose filaments
    Patent number: 5942327
    Abstract: Solvent-spun cellulose filaments from a solution of cellulose in a tertiary amine N-oxide and if necessary water with a strength of 50 to 80 cN/tex, an elongation at break of 6 to 25% and a specific breaking time of at least 300 s/tex.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: August 24, 1999
    Assignee: Akzo Nobel NV
    Inventors: Derek Budgell, Hans-Juergen Pitowski, Ulrich Wachsmann