Patents by Inventor Robert Raymond Malvine Salsmans

Robert Raymond Malvine Salsmans 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).

  • Amino-substituted tetracyclic compounds
    Patent number: 4039558
    Abstract: The invention is dealing with compounds of the general formula: ##STR1## as well as the pharmaceutically acceptable salts thereof, in which X represents oxygen, sulphur, the group >NR.sub.7 or the group --CR.sub.8 R.sub.9 --,R.sub.1, r.sub.2, r.sub.3 and R.sub.4 represent hydrogen, hydroxy, halogen, an alkyl, alkoxy or alkylthio group or a trifluoromethyl group,R.sub.5 and R.sub.6 represent hydrogen, an alkyl group or an aralkyl group,R.sub.7 represents hydrogen or alkyl (1-4 C),R.sub.8, r.sub.9 represent hydrogen or methyl, andQ represents hydrogen (2H) or oxygen,Having valuable antihistamine, sedative and antidepressive properties.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: August 2, 1977
    Assignee: Akzona Incorporated
    Inventors: Willem Jacob van der Burg, Robert Raymond Malvine Salsmans