Patents by Inventor Thomes Zierke

Thomes Zierke 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 1,3-disubstituted pyrazolecarboxylic esters
    Publication number: 20110118474
    Abstract: A process for preparing 1,3-disubstituted pyrazolecarboxylic esters of the formula (I) where X, Y, Z=hydrogen or halogen and R1=C1-C6-alkyl, by metering an enol ether of the formula III where R2 is C1-C6-alkyl at from (?41) to (?80)° C. into an alkyl hydrazine of the formula II H2N—NH-lower alkyl ??(II).
    Type: Application
    Filed: July 10, 2009
    Publication date: May 19, 2011
    Applicant: BASF SE
    Inventors: Bernd Wolf, Sebastian Peer Smidt, Volker Maywald, Christopher Koradin, Michael Keil, Thomes Zierke, Michael Rack