Patents by Inventor Bela Hegedus

Bela Hegedus 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).

  • Publication number: 20240068545
    Abstract: An electric motor comprises: a stator; a rotor having a rotor shaft; and a transmission coupled to the rotor shaft, wherein when the rotor shaft rotates in a first direction an output shaft of the transmission rotates in a second direction opposite to the first direction with a first gear ratio, and wherein when the rotor shaft rotates in the second direction the output shaft of the transmission rotates in the second direction with a second gear ratio different from the first gear ratio.
    Type: Application
    Filed: August 25, 2023
    Publication date: February 29, 2024
    Inventors: Balazs Palfai, Bela Hegedus, Sai Enabothula, Aravind Srinivasan
  • Publication number: 20100256414
    Abstract: The invention relates to N-(trans-4-isopropylcyclohexylcarbonyl)-D-phenylalanine (nateglinide) in the novel crystalline form “G” and a process for the preparation thereof. A process for the preparation of chirally pure nateglinide by treating a lower alkyl ester thereof with a base to yield an alkali salt and liberating the product from said salt by proper addition of an acid, is also provided. Still another aspect of the invention is a process for the preparation of nateglinide in the crystalline form “H” from other crystalline modifications of nateglinide.
    Type: Application
    Filed: April 7, 2010
    Publication date: October 7, 2010
    Inventors: Maria Gazdag, Tibor Gizur, Bela Hegedus, Attila Szemzo, Gabor Tarkanyi, Jozsef Törley, Monika Babjak
  • Patent number: 7767847
    Abstract: The invention relates to N-(trans-4-isopropylcyclohexylcarbonyl)-D-phenylalanine (nateglinide) in the novel crystalline form “G” and a process for the preparation thereof. A process for the preparation of chirally pure nateglinide by treating a lower alkyl ester thereof with a base to yield an alkali salt and liberating the product from said salt by proper addition of an acid, is also provided. Still another aspect of the invention is a process for the preparation of nateglinide in the crystalline form “H” from other crystalline modifications of nateglinide.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: August 3, 2010
    Assignee: Richter Gedeon Vegyeszeti Gyar RT.
    Inventors: Maria Gazdag, Tibor Gizur, Bela Hegedus, Attila Szemzo, Gabor Tarkanyi, Jozsef Törley, Monika Babjak
  • Publication number: 20100081668
    Abstract: The present invention provides pharmaceutically applicable compounds and polymorphs belonging to the ziprasidone hydrobromide compound group with antipsychotic effect. The present invention provides hydrobromide polymorphs of 5-{-2-[4-(1,2-benzisothiazol-3-yl)-1-piperazinyl]-ethyl}-6-chloro-1,3-dihydro-2H-indol-2-one, ziprasidone of Formula (I) having neuroleptic activity.
    Type: Application
    Filed: November 23, 2007
    Publication date: April 1, 2010
    Inventors: József Neu, Adám Demeter, Zoltán Varga, Balázs Havasi, Sándor Garadnay, Béla Hegedüs
  • Publication number: 20070043117
    Abstract: The invention relates to N-(trans-4-isopropylcyclohexylcarbonyl)-D-phenylalanine (nateglinide) in the novel crystalline form “G” and a process for the preparation thereof. A process for the preparation of chirally pure nateglinide by treating a lower alkyl ester thereof with a base to yield an alkali salt and liberating the product from said salt by proper addition of an acid, is also provided. Still another aspect of the invention is a process for the preparation of nateglinide in the crystalline form “H” from other crystalline modifications of nateglinide.
    Type: Application
    Filed: July 8, 2004
    Publication date: February 22, 2007
    Inventors: Maria Gazdag, Tibor Gizur, Bela Hegedus, Attila Szemzo, Gabor Tarkanyi, Jozsef Torley, Monika Babjak
  • Patent number: 6103724
    Abstract: The invention relates to fused heterocyclic compounds with ring junction nitrogen atom of the formula: ##STR1## wherein Q stands for 2-indolizinyl, 2-imidazo[1,2-a]pyridinyl, 2-imidazo[1,2-a]pyrimidinyl, 6-(2,3-dihydroimidazo[2,1-b]thiazol)-yl or 6-imidazo[2,1-b]thiazolyl group; and n is an integer from 2 to 4, as well as therapeutically useful salts thereof. The invention further relates to pharmaceutical compositions containing these compounds as well as a process for the preparation of the above compounds and compositions. The compounds of formula (I) exhibit mainly antipsychotic effects so the invention relates also to a method of treatment of schizophrenia, organic mental disorders, affective disorders, anxiety and personality disorders.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: August 15, 2000
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Istvan Laszlovszky, Gyorgy Domany, Tibor Acs, Gyorgy Ferenczy, Csaba Szantay, Eszter Thuroczyne Kalman, Erzsebet Lapis, Ferenc Trischler, Bela Hegedus, Feranc Auth, Monika Csejtei, Egon Karpati, Bela Kiss, Judit Laszy, Margit Pellioniszne Paroczai, Adam Sarkadi, Sandor Szabo
  • Patent number: 5478949
    Abstract: The invention relates to carbazolone derivatives of the formula ##STR1## wherein A stands for a group of formula--CH.sub.2 --R (V),wherein R means a hydroxyl or 2-methyl-1H-imidazol-1-yl group;B represents a group of formula ##STR2## wherein R.sub.1 means hydrogen or a methyl or ethyl group; or A and B together form a group of formula ##STR3## wherein R.sub.2 means a methyl or ethyl group; or A and B together form a group of formula ##STR4## The above compounds are useful intermediates in the synthesis of ondansetron of formula ##STR5## chemically 9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]-1,2,3,9-tetrahydro-4H-carba zol-4-one.The invention further relates to a novel process for the preparation of compounds of the formula (I) , wherein A and B are the same as in formula (I) but B may be also hydrogen. Thus, this novel process is suitable for the preparation of ondansetron itself.
    Type: Grant
    Filed: November 25, 1994
    Date of Patent: December 26, 1995
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Peter Bod, Kalman Harsanyi, Ferenc Trischler, Eva Fekecs, Attila Csehi, Bela Hegedus, Eva Mersich nee Donat, Gyorgyi Szabo nee Komlosi, Erika Horvath nee Sziki
  • Patent number: 5416221
    Abstract: The invention relates to carbazolone derivatives of the formula ##STR1## wherein A stands for a group of formula--CH.sub.2 --R (V),wherein R means a hydroxyl or 2-methyl-1H-imidazol-1-yl group;B represents a group of formula ##STR2## wherein R.sub.1 means hydrogen or a methyl or ethyl group; or A and B together form a group of formula ##STR3## wherein R.sub.2 means a methyl or ethyl group; or A and B together form a group of formula ##STR4## The above compounds are useful intermediates in the synthesis of ondansetron of formula ##STR5## chemically 9-methyl-3-[(2-methyl)-1H-imidzol-1-yl)methyl]1,2,3,9-tetrahydro-4H-carbaz ol-4-one.The invention further relates to a novel process for the preparation of compounds of the formula (I), wherein A and B are the same as in formula (I) but B may be also hydrogen. Thus, this novel process is suitable for the preparation of ondansetron itself.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: May 16, 1995
    Inventors: Peter Bod, Kalman Harsanyi, Ferenc Trischler, Eva Fekecs, Attila Csehi, Bela Hegedus, Eva Mersich ne/ e Donat, Gyorgyi Szabonee Komlosi, Erika Horvath nee Sziki
  • Patent number: 5169859
    Abstract: The present invention relates to novel compounds of the general formula (I) ##STR1## wherein R means hydrogen or C.sub.1-4 alkyl group; andY stands for cyano, trifluoromethyl, aryloxy or aryl(C.sub.1-4 alkyl)oxy group.The compounds according to the invention show a gastric acid secretion-inhibiting effect and therefore, they are useful for the treatment of gastric and duodenal ulcers. In addition, they exert a cytoprotective action against gastric laesions induced, e.g. by indomethacin or acid-containing alcohol.
    Type: Grant
    Filed: July 18, 1991
    Date of Patent: December 8, 1992
    Assignee: Richter Gedeon Vegyeszeti Gyar RT
    Inventors: Istvan Szabadkai, Kalman Harsanyi, Zsoltne Szabo, Bela Hegedus, Elemer Ezer, Judit Matuz, Laslo Szporny, Katalin Saghy, Gyorgy Hajos, Attila Csehi, Gabor Balogh
  • Patent number: 5162359
    Abstract: Novel antihyperlipoproteinemic compounds are disclosed of the formula I, ##STR1## wherein X is a halogen atom, methyl, ethyl, methoxy or ethoxy group,Y is hydroxy if X is methoxy or ethoxy, otherwise it is a hydrogen atom or a, methoxy or ethoxy group,Z is a methoxy or ethoxy group if X or Y is a methoxy group or an ethoxy group; otherwise it is hydrogen atom,The invention also covers antiartheriosclerotic, antihyperlipoproteinemic pharmaceutical compositions, suitable for inhibiting the formation of thrombuses, comprising the compounds of formula I in an effective dose, a process for preparing the same and methods for the treatment of hyperlipoproteinemia with the aid of the said compounds or compositions.
    Type: Grant
    Filed: September 3, 1991
    Date of Patent: November 10, 1992
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Kalman Harsanyi, Peter Tetenyi, Tamas Nagy, Attila Csehi, Tibor Gizur, Bela Hegedus, Andrea Maderspach, Andras Javor, Gyorgy Hajos, Laszlo Szporny
  • Patent number: 5157038
    Abstract: The invention relates to novel 2-oxo-1-oxa-8-azaspiro[4,5]decane derivatives of the formula (I), ##STR1## wherein X means oxygen or an >NR group, whereinR stands for hydrogen; a C.sub.1-12 alkyl; C.sub.3-6 cycloalkyl; carbocyclic C.sub.6-10 aryl or carbocyclic C.sub.6-10 aryl-C.sub.1-4 alkyl group, the two latter two substituents optionally substituted on their aromatic moiety by one or more, same or different halogen, one or more C.sub.1-4 alkyl, C.sub.1-4 alkoxy or trihalomethyl group; or a tosyl group;R.sup.1 and R.sup.2 together represent a methylene group or, when X stands for an >NR group wherein R is as defined above, one of R.sup.1 and R.sup.2 m may represent a hydroxyl group and the other one is a methyl group; andR.sup.3 means hydrogen, benzyl, (C.sub.1-4 alkoxy)carbonyl, phenoxycarbonyl, benzyloxycarbonyl, formyl, piperidin-1-ylcarbonyl, morpholin-4-ylcarbonyl, 4-methylpiperazin-1-ylcarbonyl, 4-(2-hydroxethyl)piperazin-1-ylcarbonyl, 2-chloro-3-nicotinoylcarbamoyl or C.sub.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: October 20, 1992
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Edit Toth, Jozsef Torley, Bela Hegedus, Laszlo Szporny, Bela Kiss, Eva Palosi, Dora Groo, Istvan Laszlovszky, Erzsebet Lapis, Ferenc Auth, Laszlo Gaal
  • Patent number: 5128477
    Abstract: The invention relates to two morphologically homogeneous forms of Famotidine [chemical name: N-sulfamoyl-3-(2-guanidino-thiazole-4-yl-methylthio)-propionamidine]. Said forms are prepared by selective crystallization or precipitation.
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: July 7, 1992
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Peter Bod, Kalman Harsanyi, Bela Hegedus, Erik Bogsch, Eva Fekecs, Imre Peter, Zsuzsanna Aracs nee Trischler, Sandor Miszori, Maria Stiller
  • Patent number: 5120850
    Abstract: The invention relates to two morphologically homogeneous forms of Famotidine [chemical name: N-sulfamoyl-3-(2-guanidino-thiazole-4-yl-methylthio)-propionamidine]. Said forms are prepared by selective crystallization or precipitation.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: June 9, 1992
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Peter Bod, Kalman Harsanyi, Bela Hegedus, Erik Bogsch, Eva Fekecs, Imre Peter, Zsuzsanna Aracs nee Trischler, Sandor Miszori, Maria Stiller
  • Patent number: 5106846
    Abstract: The present invention relates to compounds of the general formula (I), ##STR1## wherein R.sub.1 stands for hydrogen, halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or nitro group;R.sub.2 means a C.sub.1-7 alkyl group optionally substituted by: a hydroxyl or oxo group; or an ester group containing 1 to 4 carbon atoms in the alkoxy moiety; or a C.sub.1-4 alkoxy, cyano, amino, C.sub.1-4 alkylamino, or dialkylamino group; or an acyl group containing 1 to 7 carbon atoms in the alkyl moiety; orR.sub.2 means an aryl-C.sub.1-7 alkyl group optionally bearing the substituents defined above for R.sub.2 in the alkyl chain and optionally substituted by halogen, nitro, C.sub.1-4 alkyl or alkoxy group in the benzene ring; orR.sub.2 represents an allyl, phenylallyl or phenylsulfonyl group, both latter groups optionally being substituted by halogen or a C.sub.1-4 alkyl group in the benzene ring; orR.sub.2 stands for a carbamoyl group substituted by one or two C.sub.1-4 alkyl group(s) or phenyl group on the nitrogen atom.
    Type: Grant
    Filed: July 10, 1990
    Date of Patent: April 21, 1992
    Assignee: Richter Gedeon Vegyeszeti Gyar RT
    Inventors: Istvan Szabadkai, Kalman Harsanyi, Agnes Lampert, Gyorgy Domany, Bela Hegedus, Elemer Ezer, Judit Matuz, Katalin Saghy, Laszlo Szporny, Gyorgy Hajos, Krisztina Szekely
  • Patent number: 4990524
    Abstract: The present invention relates to a method of treating a gastric ulcer by administering a 2-thia-zolone of the formula (I), ##STR1## wherein X stands for --CN, --CONH.sub.2, --CO.sub.2 H or --CO.sub.2 R group, wherein R is a C.sub.1-5 alkyl group; andn is 0, 1 or 2, with the proviso, that when X stands for CO.sub.2 H, CO.sub.2 R, n is other than 0.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: February 5, 1991
    Assignee: Richter Gedeon Vegyeszeti Gyar RT.
    Inventors: Peter Bod, Kalman Harsanyi, Ferenc Trischler, Eva Fekecs, Bela Hegedus, Elemer Ezer, Judit Matuz, Katalin Saghy, Laszlo Szporny, Gyorgy Hajos, Krisztina Szekely
  • Patent number: 4937252
    Abstract: The present invention relates to novel 2-thiazolidinone derivatives of the general formula (I), ##STR1## wherein A stands for hydrogen, halogen or a C.sub.1-4 alkyl, C.sub.1-4 alkoxy or nitro group; andn is 0 or 1.The compounds according to the invention show a cytoprotective and gastric acid secretion-inhibiting effect and thus, may be used in the therapy of gastric and duodenal ulcers.
    Type: Grant
    Filed: December 13, 1988
    Date of Patent: June 26, 1990
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Istvan Szabadkai, Kalman Harsanyi, Agnes Lampert, Gyorgy Domany, Bela Hegedus, Marta K. Pap, Elemer Ezer, Judit Matuz, Katalin Saghy, Laszlo Szporny, Gyorgy Hajos, Kristztina Szekely
  • Patent number: 4894459
    Abstract: The invention relates to two morphologically homogeneous forms of Famotidine [chemical name: N-sulfamoyl-3-(2-guanidino-thiazole-4-yl-methylthio)-propionamidine]. Said forms are prepared by selective crystallisation or precipitation.
    Type: Grant
    Filed: August 4, 1987
    Date of Patent: January 16, 1990
    Assignee: Richter Gedeon Vehyeszeti Gyar Rt.
    Inventors: Peter Bod, Kalman Harsanyi, Bela Hegedus, Erik Bogsch, Eva Fekecs, Imre Peter, Zsuzsanna Aracs ne Trischler, Sandor Miszori, Maria Stiller
  • Patent number: 4835281
    Abstract: The invention relates to a new process for the preparation of N-sulfamyl-3-(2-guanidinothiazol-4-yl-methylthio)-propionitrile (famotidine) of the formula (I) ##STR1## by S-alkylation of 2-guanidino-thiazol-4-yl-methanethiol obtained from S-(2-guanidino-thiazol-4-yl-methyl)-isothiourea dihydrochloride of the formula (III) ##STR2## by in situ treatment with a base, which comprises carrying out S-alkylation with a N-sulfamyl-3-halopropionamidine of the formula (II) ##STR3## wherein X stands for halogen.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: May 30, 1989
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Peter Bod, Kalman Harsanyi, Eva gai nee Csongor, Erik Bogsch, Eva Fekecs, Ferenc Trischler, Gyorgy Domany, Istvan Szabadkai, Bela Hegedus
  • Patent number: 4814329
    Abstract: The invention relates to novel, sulfur-containing 5-substituted benzimidazole derivatives of formula I ##STR1## and acid-addition salts thereof antihyperlipoproteinemic action, a process for preparing the same, pharmaceutical formulations comprising the novel compound as active ingredient and a method for inhibiting atherosclerosis, trombus formation and treating hyperlipoproteinemic diseases.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: March 21, 1989
    Assignee: Richter Gedeon Vegyeszeti Gyar R.T.
    Inventors: Kalmen Harsanyi, Andrea Maderspach, Andres Javor, Gyorgy Hajos, Gyorgy Fekete, Laslo Szporny, Peter Tetenyi, Katalin Csomor, Egon Karpati, Bela Hegedus, Marta Kapolnas nee Pap, Marta Szollosy, Anna Kallay nee Sohonyai
  • Patent number: 4731479
    Abstract: The invention relates to new propionamidine derivatives of formula (I) ##STR1## wherein X is halogen,and to a process for their preparation. According to the invention compounds of the formula (I) are prepared by reacting a 3-halopropionitrile of the formula (III) ##STR2## wherein X is as defined above,with sulfamide of the formula (II) ##STR3## in the presence of a hydrogen halide. Compounds of the formula (I) are useful intermediates in the preparation of famotidine.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: March 15, 1988
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Peter Bod, Kalman Harsanyi, Eva gai nee Csongor, Erik Bogsch, Eva Fekecs, Ferenc Trischler, Gyorgy Domany, Istvan Szabadkai, Bela Hegedus