Patents by Inventor Horace A. De Wald

Horace A. De Wald 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).

  • Hexahydro-1-arylspiro(3H-oxazolo(3,4-A)pyridine-3,4'-piperidene) antidepressants, pharmaceutical compositions thereof and method of use thereof
    Patent number: 4260623
    Abstract: Compounds of the formula ##STR1## where R.sub.1 is hydrogen, lower alkyl containing one to three carbon atoms, cycloalkyl lower alkyl containing four to seven carbon atoms, or benzyl; and R.sub.2 is hydrogen, halogen, alkoxy containing one to three carbon atoms, trifluoromethyl; and pharmaceutically acceptable acid addition salts thereof are useful as anti-depressants.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: April 7, 1981
    Assignee: Warner-Lambert Company
    Inventor: Horace A. De Wald
  • 1,3,8-Trimethylimidazopyrazolodiazepine compounds
    Patent number: 4105851
    Abstract: 4-Aryl-1,6-dihydro-1,3,8-trimethylimidazo[1,2-a]-pyrazolo[4,3-f][1,4]diazep ines; and acid-addition salts. The aryl group is o-fluorophenyl or o-chlorophenyl. The compounds are pharmacological agents, especially anticonvulsant and antianxiety agents. They can be produced by reacting an aryl-(2-hydroxymethyl)-imidazol-1-yl-1,3-dimethylpyrazol-4-ylmethanone hydrocarbon sulfonate ester with ammonia in the presence of iodide.
    Type: Grant
    Filed: June 17, 1976
    Date of Patent: August 8, 1978
    Assignee: Parke, Davis & Company
    Inventor: Horace A. De Wald