Patents by Inventor Manfred Zillig

Manfred Zillig 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).

  • Dyeing of paper
    Patent number: 5554261
    Abstract: A process for dyeing paper in connection with paper manufacture by adding water-soluble anionic dyes and cationic polymers which contain vinylamine units to the paper pulp as fixing agents and removing water from the paper pulp with the formation of dyed paper is described.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: September 10, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Claudia Nilz, Norbert Sendhoff, Walter Breitschaft, Manfred Zillig, Primoz Lorencak