Patents by Inventor Willy Leimgruber

Willy Leimgruber 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).

  • Patent number: 3931288
    Abstract: Tricyclic compounds of the formula ##SPC1##Wherein R.sub.1 is hydrogen, halogen, lower alkyl, lower alkoxy, lower alkylthio, trifluoromethyl, cyano, carbamoyl, carboxy, lower alkoxy carbonyl, nitro, amino, mono-lower alkylamino, di-lower alkylamino, acyl, acylamido, sulfamoyl, di-lower alkylsulfamoyl, or difluoromethylsulfonyl; R.sub.2 is hydrogen, lower alkyl, amino-lower alkyl, mono-lower alkyl-amino-lower alkyl, or di-lower alkylamino-lower alkyl; n and r are independently 1 or 2; and X is oxygen or sulfur, prepared, inter alia, from the correspondingly substituted phenol or thiophenol and haloketocyclohexane or pentane carboxylic acid ester, are described. The end products are useful as anti-inflammatory and anti-rheumatic agents.
    Type: Grant
    Filed: November 23, 1973
    Date of Patent: January 6, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Leo Berger, Willy Leimgruber, Fausto Eugenio Schenker