Patents by Inventor Anton Sch onberg

Anton Sch onberg 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 the preparation of cellulose sheet
    Patent number: 5607639
    Abstract: Method for the preparation of cellulose sheet by extrusion of a heated solution of cellulose in a tertiary amine-oxide, which method includes using an extrusion die with an extrusion orifice, characterised in that, immediately below the extrusion orifice there is provided an inlet for cooling gas to cool the extruded sheet. The method according to the invention is especially suitable for the preparation of cellulose tubular films.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: March 4, 1997
    Assignee: Lenzing Aktiengesellschaft
    Inventors: Stefan Zikeli, Friedrich Ecker, Ernst Rauch, Klaus Renner, Anton Sch onberg