Patents by Inventor Marcel Gerold

Marcel Gerold 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).

  • Antihypertensive combination products containing a dihydropyridine and a pyridazodiazepine
    Patent number: 4859665
    Abstract: Compositions for treating hypertension comprising an effective amount of a dihydropyridine of the formula ##STR1## in which X is 1 or 2 identical or different substituents from the group consisting of nitro, chlorine and trifluoromethyl, or together with the phenyl ring, the group ##STR2## R.sup.1 is alkyl of 1 to 4 C atoms, which is optionally substituted by alkoxy of 1 to 4 C atoms,R.sup.2 is alkyl of 1 to 12 C atoms, which is optionally substituted by alkoxy of 1 to 3 C atoms, fluorine or N-methyl-N-benzylamino andR.sup.3 is alkyl of 1 to 4 C atoms, cyano or hydroxymethyl, and a pyridazodiazepine of the formula ##STR3## in which R.sup.4 is aralkyl,R.sup.5 is hydrogen or alkyl of 1 to 8 C atoms,R.sup.6 is hydrogen or alkyl of 1 to 8 C atoms andR.sup.7 and R.sup.8 are hydrogen, or together, an oxo group, are described.
    Type: Grant
    Filed: December 2, 1986
    Date of Patent: August 22, 1989
    Assignees: Hoffmann-LaRoche Inc., Bayer Akt.
    Inventors: Bernward Garthoff, Marcel Gerold, Fridolin Hefti, Stanislav Kazda, Andreas Knorr