Patents by Inventor Li-Ping Yuan

Li-Ping Yuan 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).

  • Sulphonyloxadiazolones
    Patent number: 6100281
    Abstract: Novel sulphonyloxadiazolones of the formula ##STR1## in which A represents oxygen, sulphur, --SO--, --SO.sub.2 -- or ##STR2## where R.sup.3 represents hydrogen or alkyl,R.sup.1 represents optionally substituted cycloalkyl, optionally substituted cycloalkenyl or optionally substituted aryl andR.sup.2 represents in each case optionally substituted alkyl, alkenyl, dialkylamino or aryla process for preparing these substances and their use as microbicides in crop protection and in the protection of materials.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: August 8, 2000
    Assignee: Bayer Aktiengesellschaft
    Inventors: Lutz Assmann, Peter Gerdes, Klaus Stenzel, Chuan-Zheng Deng, Li-Ping Yuan, Jian-Mei Zhao