Patents by Inventor Claus Schmiz

Claus Schmiz 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).

  • Hydrodipyrano-phthalazine compounds
    Patent number: 4002617
    Abstract: The present invention relates to novel hydrodipyranophthalazine compounds of the formula: ##STR1## wherein R.sub.1 = hydrogen or lower alkyl,R.sub.2 = hydrogen, chlorine or bromine,R.sub.3 = hydrogen or aralkyl if R.sub.2 = hydrogen,R.sub.3 = bromine or alkoxy if R.sub.2 = bromine,R.sub.3 = chlorine or alkoxy if R.sub.2 = chlorine, or ##STR2## wherein R.sub.4 = hydrogen, halogen, trifluoromethyl, alkyl, alkoxyl, alkylenedioxy, a possibly substituted amino group, or a nitro group,The 4,4'-bond is saturated or unsaturated, and acid-addition salts of these compounds.These compounds exert a valuable activity on the cardiovascular and central nervous system.
    Type: Grant
    Filed: November 5, 1975
    Date of Patent: January 11, 1977
    Assignee: Chem. Pharmaz. Fabrik Dr. Herman Thiemann G.m.b.H.
    Inventors: Fritz Eiden, Claus Schmiz