Patents by Inventor Ben Armah

Ben Armah 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: 5212186
    Abstract: Compounds for the treatment of cardiac insufficiency, an arterial thrombo embolism, an arterial occlusive disease, psoriasis, neurodermatitis, asthma, platelet aggregation and hypertension, of the formula ##STR1## in which R.sub.1 is hydrogen, C.sub.1-6 -alkyl, C.sub.2-6 -alkenyl or C.sub.3-7 -cycloalkyl,R.sub.2 is hydrogen, C.sub.1-6 -alkyl, C.sub.2-6 -alkenyl or C.sub.1-6 -hydroxyalkyl,R.sub.1 and R.sub.2 together with the carbon atom which carries them can be C.sub.3-7 -spiroalkyl,R.sub.3 is hydrogen or C.sub.1-6 -alkyl, andR.sub.4 is a cyanamido group, a 4-difluoromethoxy-3-pyridyl group or a C.sub.1-2 -nitroalkyl group, andZ is oxygen or sulphur,or a salt, acid addition salt, tautomer or optical isomer thereof.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: May 18, 1993
    Assignee: Beiersdorf Aktiengesellschaft
    Inventors: Michael Paal, Wolfgang Stenzel, Reinhard Bruckner, Ben Armah
  • Patent number: 5145849
    Abstract: Indolylpropanols of the formula I ##STR1## in which R.sup.1 and R.sup.2, which can be identical or different, in each case denote a 2-, 3- or 4-pyridinyl or a 2- or 3-thienyl radical, phenyl or phenyl which is optionally monosubstituted or identically or differently disubstituted by halogen, alkyl, C.sub.3-7 -cycloalkyl or C.sub.1-6 -alkoxy, where alkyl denotes straight-chain alkyl having 1 to 6 carbon atoms or branched alkyl having 3 to 6 carbon atoms, and their salts and acid addition salts, tautomers and optical isomers show positive inotropic and antiarrhythmic activity.
    Type: Grant
    Filed: January 3, 1991
    Date of Patent: September 8, 1992
    Assignee: Beiersdorf Aktiengesellschaft
    Inventors: Wolfgang Stenzel, Ben Armah
  • Patent number: 5096914
    Abstract: Benzopyran derivatives of the general formula I ##STR1## wherein the substituents are as defined herein are provided. The compounds show vasodilating and vascular spasmolytic activity and are useful in treating hypertension.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: March 17, 1992
    Assignee: Beiersdorf Aktiengesellschaft
    Inventors: Wolfgang Stenzel, Theo Schotten, Ben Armah
  • Patent number: 5028711
    Abstract: Benzopyran derivatives of the general formula I ##STR1## are disclosed. The compounds are therapeutic active compounds.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: July 2, 1991
    Assignee: Beiersdorf Aktiengesellschaft
    Inventors: Wolfgang Stenzel, Theo Schotten, Ben Armah
  • Patent number: 4952410
    Abstract: Pharmaceutical composition containing moxonidine (4-chloro-6-methoxy-2-methyl-5-(2-imidazolin-2-yl)aminopyrimidine) or its pharmaceutically acceptable salts and hydrochlorothiazide (6-chloro-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulphonamide-1,1-dioxide ) and, if appropriate, triamterene (2,4,7-triamino-6-phenylpteridine).
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: August 28, 1990
    Assignee: Beiersdorf AG
    Inventors: Ben Armah, Wolfgang Stenzel, Vera Planitz
  • Patent number: 4935414
    Abstract: Substituted indolylpropanols of the formula I ##STR1## in which R.sup.1 denotes a cyano, carboxamido, alkoxycarbonyl, hydroxyl or acetyl group,Y stands for the group A ##STR2## wherein n is the number 2 or 3, or the group B, ##STR3## R.sup.2 stands for R.sup.2 ' where Y denotes the group A and for R.sup.2 " when Y denotes the group B, whereR.sup.2 ' denotes pyridinyl, thienyl or substituted phenyl which is monosubstituted or disubstituted by difluoromethoxy, difluoromethylthio, trifluoromethoxy, trifluoromethylthio, trifluoroethoxy, alkoxyalkoxy, cycloalkylalkoxy, alkoxyalkyl, alkylthioalkoxy, alkylsulphinylalkoxy, alkylsulphonylalkoxy, alkoxyalkylthio, alkoxyalkylsulphinyl, alkoxyalkylsulphonyl, alkylthioalkyl, alkylsulphinylalkyl, alkylsulphonylalkyl and dialkylaminoalkoxy, andR.sup.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: June 19, 1990
    Assignee: Beiersdorf AG
    Inventors: Wolfgang Stenzel, Ben Armah, Thomas Beuttler
  • Patent number: 4777181
    Abstract: Substituted 4-fluoro-isoindolines of the general formula I ##STR1## in which R denotes hydrogen or an acyl group, and their tautomeric forms and their acid addition salts have an alpha.sub.2 -antagonistic action.
    Type: Grant
    Filed: December 16, 1986
    Date of Patent: October 11, 1988
    Assignee: Beiersdorf AG
    Inventors: Erich Cohnen, Ben Armah
  • Patent number: 4686223
    Abstract: Substituted 5-phenylthio-6-aminopyrimidinones of the general formula I ##STR1## in which R denotes an amino or hydroxyl group, and their tautomeric forms and acid addition salts thereof, have diuretic, saluretic and uricosuric actions. They can be used as medicaments for the treatment of hypertension, hyperuricemia and edemas.
    Type: Grant
    Filed: December 4, 1985
    Date of Patent: August 11, 1987
    Assignee: Beiersdorf Aktiengesellschaft
    Inventors: Erich Cohnen, Ben Armah
  • Patent number: 4594419
    Abstract: Substituted 5-phenylthio-6-aminopyrimidinones of the general formula I ##STR1## in which R denotes an amino or hydroxyl group, and their tautomeric forms and acid addition salts thereof, have diuretic, saluretic and uricosuric actions. They can be used as medicaments for the treatment of hypertension, hyperuricemia and edemas.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: June 10, 1986
    Assignee: Beiersdorf Aktiengesellschaft
    Inventors: Erich Cohnen, Ben Armah
  • Patent number: 4568688
    Abstract: New substituted tetrahydro-1H-pyrazolo[5,1-a]isoindoles of the formula I ##STR1## in which R.sup.1 denotes a hydrogen or halogen atom or an alkoxy group having 1 to 4 carbon atoms, R.sup.2, R.sup.3 and R.sup.4, which can be identical or different, denote a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, or R.sup.2 and R.sup.3 together denote the ethylene group, and X denotes a nitrogen atom or a methine group, and their acid addition salts have a long-lasting hypertensive effect and can be used as anti-hypotensives.
    Type: Grant
    Filed: April 17, 1984
    Date of Patent: February 4, 1986
    Assignee: Beiersdorf Aktiengesellschaft
    Inventors: Erich Cohnen, Ben Armah
  • Patent number: 4526897
    Abstract: New isoindolin-2-yl-guanidines and isoindolin-2-yl-aminoimidazolines of the general formula ##STR1## in which R.sup.1 and R.sup.2 can be identical or different and either hydrogen or a halogen, alkyl, or alkoxy, each with 1 to 4 carbon atoms,R.sup.3 and R.sup.4 can be identical or different and either a hydrogen or an alkyl with 1 to 4 carbon atoms, andR.sup.5, R.sup.6, R.sup.7, and R.sup.8 can be identical or different and either hydrogen or an alkyl with 1 to 4 carbon atoms, or in whichR.sup.5 and R.sup.6 together represent the ethylene group,and their salts have an .alpha.-sympathomimetic and vasoconstrictive action that makes them appropriate as drugs for the treatment of hypotonic and rhinological states.
    Type: Grant
    Filed: August 13, 1982
    Date of Patent: July 2, 1985
    Assignee: Beiersdorf Aktiengesellschaft
    Inventors: Erich Cohnen, Ben Armah
  • Patent number: 4446142
    Abstract: Compounds of the formula ##STR1## wherein R.sup.1 is hydrogen, halogen, or alkyl, R.sup.2 is halogen or alkyl, R.sup.3 is hydrogen, acyl, or saturated or unsaturated alkyl, R.sup.4 and R.sup.5 are individually hydrogen, or alkyl, wherein all alkyl and acyl groups are branched or straight-chain and each contains 1 to 4 carbon atoms, X is oxygen, nitrogen, or sulfur, Y is oxygen or nitrogen, and --X--Y-- is --O--N--, --N--O--, or --S--N--, or salts of the above, with certain exceptions. Methods of preparation of the compounds, as well as their use as anti-hypertensives are also disclosed.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: May 1, 1984
    Assignee: Beiersdorf Aktiengesellschaft
    Inventors: Erich Cohnen, Ben Armah
  • Patent number: 4323570
    Abstract: The present invention is directed to certain aminopyrimidines of the general formula ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 are hydrogen, halogen, alkoxy, alkylthio, or alkyl having 1 to 4 carbon atoms, or cycloalkyl having 3 to 5 carbon atoms and R.sup.4 is hydrogen or an aliphatic or aromatic acyl group, as well as physiologically compatible acid addition salts thereof. Compounds of the present invention are useful as blood pressure lowering agents and in the treatment of glaucoma.
    Type: Grant
    Filed: November 7, 1979
    Date of Patent: April 6, 1982
    Assignee: Beiersdorf Aktiengesellschaft
    Inventors: Wolfgang Stenzel, Wolfgang Fleck, Erich Cohnen, Ben Armah
  • Patent number: 4318915
    Abstract: A compound of the formula ##STR1## wherein R.sup.1 is chlorine, bromine, or methoxy; and R.sup.2, R.sup.3, and R.sup.4 are individually hydrogen or methyl, at least one of R.sup.2, R.sup.3, and R.sup.4 being hydrogen; or R.sup.2 and R.sup.3 together are an ethylene group and R.sup.4 is hydrogen, or a pharmaceutically acceptable acid addition salt thereof. Such compounds are useful as anti-hypertensive agents. Methods of preparation and certain novel intermediates are also disclosed.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: March 9, 1982
    Assignee: Beiersdorf Aktiengesellschaft
    Inventors: Erich Cohnen, Ben Armah, Eva Hofferber