Patents by Inventor Peter W. Feit

Peter W. Feit 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).

  • Compositions and methods for the treatment of hypertension or oedemas
    Patent number: 4247550
    Abstract: The invention relates to a series of new compounds, salts thereof and to methods for the preparation of the compounds which have the general formula ##STR1## in which R.sub.1 stands for an unsubstituted or substituted phenoxy, phenylthio, benzyl, phenylsulfinyl, or anilino radical;R.sub.2 stands for a --YR.sub.2 ' radical, in which Y represents --O--, --S--, or --NH--, and R.sub.2 ' represents C.sub.1 -C.sub.6 -alkyl, C.sub.2 -C.sub.6 -alkenyl or -alkynyl; or methyl or ethyl substituted with phenyl, furyl, thienyl or pyridyl;R.sub.3 and R.sub.4 which can be the same or different, and unsubstituted or substituted, stand for hydrogen or for a straight or branched C.sub.1 -C.sub.8 -alkyl, C.sub.2 -C.sub.8 -alkenyl or -alkynyl radical, a C.sub.5 -C.sub.7 -cycloalkyl, a phenyl, or a 5-, 6- or 7-membered heterocyclic ring system containing not more than two hetero atoms selected from the group consisting of oxygen, sulphur and nitrogen, or for a C.sub.1 -C.sub.
    Type: Grant
    Filed: December 21, 1977
    Date of Patent: January 27, 1981
    Assignee: Leo Pharmaceutical Products Ltd. A/S (Lovens Kemiske Fabrik Produktionsaktieselskab)
    Inventors: Peter W. Feit, Ole B. T. Nielsen, Herta Bruun, Claus A. S. Bretting