Patents by Inventor Andreas v. Sprecher

Andreas v. Sprecher 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).

  • Disubstituted piperazines
    Patent number: 4804661
    Abstract: Piperazines of the formula ##STR1## and their salts, in which each of Ar.sub.1 and Ar.sub.2, independently of the other, represents phenyl that is unsubstituted or mono- or di-substituted by C.sub.1 -C.sub.7 -alkyl, C.sub.1 -C.sub.7 -alkoxy, cyano, halogen, trifluoromethyl, amino, C.sub.1 -C.sub.7 -alkylamino, di-C.sub.1 -C.sub.7 -alkylamino and/or by C.sub.1 -C.sub.7 -alkanoylamino, can be used as the active ingredients of medicaments and are manufactured in a manner known per se.
    Type: Grant
    Filed: June 9, 1987
    Date of Patent: February 14, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Pier G. Ferrini, Andreas v. Sprecher