Patents by Inventor Rudolf Polzinger

Rudolf Polzinger 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 for preparing an adhesive for corrugated paperboard
    Patent number: 6669772
    Abstract: The invention relates to a process for preparing corrugated paperboard adhesive based on the STEIN-HALL process, in which case it is a batch process or continuous process and the viscosities of the carrier (carrier viscosity) and the finished corrugated paperboard adhesive (final viscosity) are measured online by a viscometer and are each controlled to a constant value (predetermined carrier viscosity &eegr;′, final predetermined viscosity &eegr;″).
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: December 30, 2003
    Assignee: BVG Bauer-Verfahrenstechnik GmbH
    Inventor: Rudolf Polzinger