Patents by Inventor Hannu Wahlberg

Hannu Wahlberg 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).

  • Patent number: 6521084
    Abstract: In a process for extracting cellulose from fibrous materials such as wood, the fibrous materials are reacted with a chemical disintegration solution in the presence of organosilicic compounds.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: February 18, 2003
    Assignee: Wacker-Chemie GmbH
    Inventors: Willibald Burger, Outi Neubig, Kimmo Lappalainen, Hannu Wahlberg