Inventor · disambiguated record
Kurt H. Ahrens
Also filed as: AHRENS KURT H · AHRENS KURT-HENNING
32 granted patents·325 citations·filing 1976–1998
97Inventor score
Files withHEUMANN LUDWIG & CO GMBH15HEUMANN PHARMA GMBH & CO15U S BIOSCIENCE INC AND INDIVID1US BIOSCIENCE1
Top patents by PatentIndex Score
32 records- 0196US4816455ACrystalline, anhydrous sigma-form of 2-(4-(2-furoyl)-(2-piperazin)-1-yl)-4-amino-6,7-dimethoxy-quinazoline hydrochloride and a process for its preparationHEUMANN PHARMA GMBH & CO·Filed 1987·Granted Mar 28, 1989·72 cites·3 claims
- 0286US4973755AStable solvent adducts of Z-1-(p-β-dimethylaminoethoxy-phenyl)-1-(p-hydroxyphenyl)-2-phenyl-but-1-eneHEUMANN PHARMA GMBH & CO·Filed 1988·Granted Nov 27, 1990·50 cites·1 claims
- 0385US4954501APiperazine substituted 6-phenyldihydro-3(2H)-pyridazinones, and pharmaceutical preparations containing theseHEUMANN PHARMA GMBH & CO·Filed 1988·Granted Sep 4, 1990·39 cites·7 claims
- 0476US4968683A6-oxo-pyridazine derivatives, a process for their preparation and medicaments containing these compoundsHEUMANN PHARMA GMBH & CO·Filed 1989·Granted Nov 6, 1990·24 cites·22 claims
- 0574US4921856ADihydropyridazinone derivatives, a process for their preparation and pharmaceutical preparations containing these compoundsHEUMANN PHARMA GMBH & CO·Filed 1988·Granted May 1, 1990·20 cites·13 claims
- 0668US4978773AProcess for the preparation of 2,6-dichlorodiphenylaminoacetic acid derivativesHEUMANN PHARMA GMBH & CO·Filed 1989·Granted Dec 18, 1990·9 cites·4 claims
- 0767US5021431AImidazolyl alkyl guanidine derivatives, processes for their preparation and pharmaceutical preparations containing these compoundsHEUMANN PHARMA GMBH & CO·Filed 1989·Granted Jun 4, 1991·8 cites·56 claims
- 0865US5025016APyrimidine-thioalkyl pyridine derivatives, medicaments containing these compounds, and method of treatmentHEUMANN LUDWIG & CO GMBH·Filed 1988·Granted Jun 18, 1991·13 cites·32 claims
- 0962US4599346APropan-2-ol derivatives, a process for their production and medicaments containing these compoundsHEUMANN LUDWIG & CO GMBH·Filed 1984·Granted Jul 8, 1986·7 cites·2 claims
- 1060US4957920ABenzimidazoles, and pharmaceutical preparations containing these compoundsHEUMANN PHARMA GMBH & CO·Filed 1988·Granted Sep 18, 1990·8 cites·8 claims
- 1160US4697035AProcess for the preparation of basically substituted phenylacetonitrilesHEUMANN LUDWIG & CO GMBH·Filed 1985·Granted Sep 29, 1987·8 cites·11 claims
- 1258US4656180ADiamine derivatives and pharmaceutical preparations containing these compoundsHEUMANN LUDWIG & CO GMBH·Filed 1985·Granted Apr 7, 1987·5 cites·11 claims
- 1355US4666921APyrazole derivatives, processes for their preparation and pharmaceutical preparations containing these compoundsHEUMANN LUDWIG & CO GMBH·Filed 1985·Granted May 19, 1987·4 cites·5 claims
- 1454US5716960ACrystalline trimetrexate salts and the process for making the sameU S BIOSCIENCE INC AND INDIVID·Filed 1995·Granted Feb 10, 1998·6 cites·47 claims
- 1554US4968808AProcess for the preparation of nitroethene derivativesHEUMANN PHARMA GMBH & CO·Filed 1988·Granted Nov 6, 1990·5 cites·6 claims
- 1654US4578389AQuinazoline and medicaments containing these compoundsHEUMANN LUDWIG & CO GMBH·Filed 1984·Granted Mar 25, 1986·3 cites·6 claims
- 1753US6017921ACrystalline trimetrexate salts and the process for making the sameUS BIOSCIENCE·Filed 1998·Granted Jan 25, 2000·9 cites·9 claims
- 1852US4659721AAlkanol derivatives, and pharmaceutical preparation containing these compoundsHEUMANN LUDWIG & CO GMBH·Filed 1985·Granted Apr 21, 1987·6 cites·10 claims
- 1950US4634700A1,3-dioxolanyl derivatives, a process for their preparation, their use and pharmaceutical preparations containing these compoundsHEUMANN LUDWIG & CO GMBH·Filed 1984·Granted Jan 6, 1987·5 cites·10 claims
- 2047US4559344APyridine-pyrimidinone derivatives, a process for their production and H.sub. -antagonist medicament containing these compoundsHEUMANN LUDWIG & CO GMBH·Filed 1984·Granted Dec 17, 1985·2 cites·35 claims
- 2146US5108998ACardiotonic thiadiazine derivativesHEUMANN PHARMA GMBH & CO·Filed 1990·Granted Apr 28, 1992·3 cites·19 claims
- 2245US4912119AImidazolylguanidine derivatives and compositions containing these compoundsHEUMANN PHARMA GMBH & CO·Filed 1987·Granted Mar 27, 1990·4 cites·18 claims
- 2344US4732986ABenzothiazole derivatives, processes for their preparation and pharmaceutical compositions containing these compoundsHEUMANN LUDWIG & CO GMBH·Filed 1987·Granted Mar 22, 1988·3 cites·6 claims
- 2441US5039675ABenzimidazoles and pharmaceutical preparations containing these compoundsHEUMANN PHARMA GMBH & CO·Filed 1990·Granted Aug 13, 1991·5 cites·6 claims
- 2540US4600721APharmaceutical preparationHEUMANN LUDWIG & CO GMBH·Filed 1985·Granted Jul 15, 1986·2 cites·24 claims
- 2637US4757080A1,4-dihydropyridine derivativesHEUMANN PHARMA GMBH & CO·Filed 1987·Granted Jul 12, 1988·2 cites·6 claims
- 2736US4647684AProcess for the production of 4-amino-6,7-dimethoxy-2-[4-(furo-2-yl)-piperazin-1-yl]-quinazoline and physiologically compatible salts thereofHEUMANN LUDWIG & CO GMBH·Filed 1984·Granted Mar 3, 1987·0 cites·1 claims
- 2834US5182294AImidazolyl propyl guanidine derivative and a pharmaceutical composition containing this compoundHEUMANN PHARMA GMBH & CO·Filed 1991·Granted Jan 26, 1993·1 cites·6 claims
- 2932US4738960A1,3,4-Thiadiazole derivatives and pharmaceutical preparations useful as inhibitors for histamine-H2 receptorsHEUMANN LUDWIG & CO GMBH·Filed 1985·Granted Apr 19, 1988·1 cites·10 claims
- 3030US4727081A3,4-Diazole derivatives and pharmaceutical preparations containing these compoundsHEUMANN LUDWIG & CO GMBH·Filed 1985·Granted Feb 23, 1988·1 cites·6 claims
- 3127US4833141A4-[4-[[2-(halophenyl)-2-[1H-tr:azol(or diazol)-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy]phenyl]-piperazine-1-carbimic acids having antimycotic activityHEUMANN PHARMA GMBH & CO·Filed 1987·Granted May 23, 1989·0 cites·6 claims
- 3223US4105795AAntispasmodic substituted sulphoximidesHEUMANN LUDWIG & CO GMBH·Filed 1976·Granted Aug 8, 1978·0 cites·54 claims
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