Patents by Inventor Engelbert Kule

Engelbert Kule 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).

  • Preparation of 3-sulphenylmaleimides
    Patent number: 4874874
    Abstract: A process for the preparation of a 3-sulphenylmaleimide of the formula ##STR1## in which R.sup.1 is alkyl, or optionally substituted cycloalkyl or aralkyl, andR.sup.2 is optionally substituted alkyl, cycloalkyl, aryl or aralkyl,comprising reacting a 3-sulphenylsuccinimide of the formula ##STR2## with an equimolar amount of hydrogen peroxide in the presence of a lower alkanecarboxylic acid. The compounds are fungicidal and those are new where R.sup.2 is not alkyl, or where R.sup.1 is not alkyl while R.sup.2 is optionally substituted phenyl.
    Type: Grant
    Filed: October 26, 1987
    Date of Patent: October 17, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Engelbert Kule, Alfons Adler