Patents by Inventor Wolfgang von der Emden

Wolfgang von der Emden 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).

  • Fluoromethylated polycyanobenzenes, their alkali metal cyanide adducts, processes for their preparation and use of the fluoromethylated polycyanobenzenes
    Patent number: 5175336
    Abstract: The invention relates to new fluoromethylated polycyanobenzenes of the formula ##STR1## in which X represents hydrogen, fluorine or chlorine,m is 1 or 2 andn is (6-m),to a process for their preparation and to the salt-like alkali metal cyanide adducts of the fluoromethylated polycyanobenzenes formed as intermediates in this preparation process and to the use of the fluoromethylated polycyanobenzenes for the detection of anions.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: December 29, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunther Beck, Wolfgang von der Emden, Helmut Heitzer, Friedrich W. Krock, Ernst Kysela, Albrecht Marhold