Patents by Inventor David Drexler

David Drexler 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).

  • Patent number: 6569805
    Abstract: The present invention relates to a herbicidal composition comprising A) one or more sulfonylureas of the formula (I) and/or their salts  in which R1 is C2-C4-alkoxy or CO—Ra, where Ra equals OH, C1-C4-alkoxy or NRbRc, in which Rb and Rc independently of one another are identical or different and are H or C1-C4-alkyl, R2 is halogen or (A)n—NRdRe, in which n equals zero or 1, A is a group CR′R″, in which R′ and R″ independently of one another are identical or different and are H or C1-C4-alkyl, Rd equals H or C1-C4-alkyl and Re is an acyl radical and, in the event that R1 equals C2-C4-alkoxy, Re may also be H, R3 is H or C1-C4-alkyl, m equals zero or 1, X and Y independently of one another are identical or different and are C1-C6-alkyl, C1-C6-alkoxy or C1-C6-alkylthio, each of the three radicals mentioned being unsubstituted or substituted by one or more radicals selected from the group consisting of halogen, C1-C4-alkoxy and C1-C4-alkylthio, or a
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: May 27, 2003
    Assignee: Aventis CropScience GmbH
    Inventors: Hansjörg Krähmer, Thomas Auler, Christopher Rosinger, Heinz Hagemeister, David Drexler