Patents by Inventor Manfred Kaczorowski

Manfred Kaczorowski 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 producing aromatic nitro compounds
    Patent number: 6242657
    Abstract: In the reaction of aromatic compounds with nitrating acids comprising HNO3 and, if appropriate, H2SO4 and/or H2O and/or H3PO4 to form aromatic nitro compounds, according to the invention an amount of from 0.5 to 20,000 ppm of one or more surface-active substances from the group of the anionic, cationic, zwitterionic or nonionic surface-active substances is added to the reaction mixture.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: June 5, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bernd-Michael König, Johannes Dühr, Hans-Joachim Raatz, Manfred Kaczorowski