Patents by Inventor Helmut Holzem

Helmut Holzem 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 preparing N-substituted hydroxylamines and salts thereof
    Patent number: 6559340
    Abstract: This invention relates to a process for preparing N-substituted hydroxylamines from N-substituted aryl- or heteroaryloxaziridines by acid hydrolysis and isolation of the N-substituted hydroxylamines in the form of their salts.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: May 6, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Dockner, Wolfgang Eymann, Bernd-Michael König, Helmut Holzem
  • Process for preparing N-substituted hydroxylamines and salts thereof
    Publication number: 20020082453
    Abstract: This invention relates to a process for preparing N-substituted hydroxylamines from N-substituted aryl- or heteroaryloxaziridines by acid hydrolysis and isolation of the N-substituted hydroxylamines in the form of their salts.
    Type: Application
    Filed: December 7, 2001
    Publication date: June 27, 2002
    Inventors: Michael Dockner, Wolfgang Eymann, Bernd-Michael Konig, Helmut Holzem