Patents by Inventor Eniko Szirt

Eniko Szirt 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: 5597822
    Abstract: The invention refers to pharmaceutical compositions for the prevention and/or treatment of gastrointestinal diseases connected with infections caused by Helicobacter pylori and a method for the treatment of such diseases.The pharmaceutical composition of the invention comprises as active ingredient a cyclic ketone derivative of the formula I ##STR1## wherein and R.sup.1 mean independently hydrogen or halo;R.sup.0 stands for hydrogen or a C.sub.1-4 alkoxy group;R.sup.2 and R.sup.3 independently represent hydrogen; a straight or branched chain C.sub.1-8 alkyl optionally substituted by a dimethylamino group; a C.sub.2-6 alkenyl or a C.sub.3-7 cycloalkyl group; orR.sup.2 and R.sup.3 together with the adjacent nitrogen atom form a 6-membered heterocyclic group containing an additional nitrogen atom that may bear a phenyl group optionally substituted by a C.sub.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: January 28, 1997
    Assignee: Egis Pharmaceutical
    Inventors: Eniko Szirt nee Kislelly, Zoltan Budai, Tibor Mezei, Gabor Blasko, Klara Kazo nee Daroczi, Andras Egyed, Gabor Gigler, Marton Fekete, Klara Reiter nee Esses, Gyula Simig, Katalin Szemeredi
  • Patent number: 5523303
    Abstract: The invention relates to novel, pharmaceutically active trisubstituted cycloalkane derivatives, a process for the preparation thereof and pharmaceutical compositions comprising the same. The invention also encompasses the use of the said cycloalkane derivatives for the treatment of diseases and for the preparation of pharmaceutical compositions suitable for the treatment of diseases.The compounds according to the invention are characterized by the general formula (I), ##STR1## wherein R represents hydrogen, C.sub.1-4 alkyl or hydroxyl,R.sup.1 stands for C.sub.1-12 alkyl,R.sup.2 and R.sup.3 each represents hydrogen, C.sub.1-12 alkyl or C.sub.2-12 alkenyl, orR.sup.2 and R.sup.3 together with the adjacent nitrogen atom form a 4- to 7-membered ring optionally comprising an oxygen, sulfur or a further nitrogen atom, which latter may carry a phenyl, benzyl or C.sub.1-4 alkyl substituent,R.sup.4 and R.sup.5 each stands for hydrogen, halogen or C.sub.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: June 4, 1996
    Assignee: Egis Gyogyszergyar Rt.
    Inventors: Judit Bajnogel, Gabor Blasko, Zoltan Budai, Andras Egyed, Marton Fekete, Erika Karaffa, Tibor Mezei, Klara Reiter nee Esses, Gyula Simig, Katalin Szemeredi, Eniko Szirt nee Kiszelly
  • Patent number: 5439940
    Abstract: The invention relates to novel, pharmaceutically active benz[e]indene derivatives, a process for the preparation thereof, pharmaceutical compositions comprising the same, further to the use of the said benz[e]indene derivatives in the treatment of certain diseases and in the preparation of pharmaceutical compositions suitable for the treatment of said diseases.The new benz[e]indene derivatives according to the invention correspond to the general formula ##STR1## wherein A represents a group of the formula alk-NR.sup.1 R.sup.2, wherein alk represents a C.sub.2-7 alkylene group optionally carrying a hydroxy substituent,R.sup.1 and R.sup.2 are independently hydrogen, C.sub.1-7 alkyl, C.sub.2-7 alkenyl, C.sub.2-7 alkynyl, mono(C.sub.1-7)alkylamino(C.sub.1-7)alkyl, di(C.sub.1-7)alkylamino(C.sub.1-7)alkyl or C.sub.3-7 cycloalkyl; orR.sup.1 and R.sup.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: August 8, 1995
    Assignee: EGIS Gyogyszergyar Rt.
    Inventors: Klara Reiter nee Eszes, Zoltan Budai, Tibor Mezei, Gabor Blasko, Gyula Simig, Istvan Gyertyan, Luiza Petocz, Marton Fekete, Katalin Szemeredi, Istvan Gacsalyi, Gabor Gigler, Ludmilla Rohacas nee Zamkovaja, Maria Szecsey nee Hegedus, Eniko Szirt nee Kiszelly
  • Patent number: 5225410
    Abstract: This invention relates to novel triazolyl hydrazide derivatives and a process for the preparation thereof.The new triazolyl hydrazide derivatives of the general formula (I). ##STR1## wherein Q represents hydrogen or a heterocyclic group optionally substituted by a C.sub.1-4 alkyl group; or a group of general formula SR.sup.1, whereinR.sup.1 stands for C.sub.1-4 alkyl or phenyl-(C.sub.1-4 alkyl) optionally substituted by halogen, C.sub.1-4 alkyl or nitro substitute therefor substituents; or Q represents a group of the formula NR.sup.2 R.sup.3, wherein R.sup.2 and R.sup.3 each represents hydrogen, straight or branched chain C.sub.1-6 alkyl or C.sub.2-6 alkenyl;Z represents hydrogen or a group of the formula (C.dbd.X)--(N--R.sup.4)--NR.sup.5 R.sup.6, whereinX stands for oxygen or sulfur,R.sup.4, R.sup.5 and R.sup.6 each stand for hydrogen or C.sub.1-4 alkyl;R.sup.7 stands for hydrogen, C.sub.1-4 alkyl or phenyl-(C.sub.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: July 6, 1993
    Assignee: Egis Gyogyszergyar
    Inventors: Jozsef Barkoczy, Jozsef Reiter, Laszlo Pongo, Lujza Petocz, Frigyes Gorgenyi, Marton Fekete, Eniko Szirt nee Kiszelly, Maria Szecsey nee Hegedus, Istvan Gacsalyi, Istvan Gyertyan
  • Patent number: 5135928
    Abstract: This invention relates to novel triazolo derivatives, a process for the preparation thereof, pharmaceutical compositions comprising the same, to the use of the said triazolo derivatives for the treatment of diseases and also for the preparation of pharmaceutical compositions suitable for the treatment of the said diseases.The new triazolo derivatives of the general formulae (Ia) and (Ib), ##STR1## wherein Q represents hydrogen or a heterocyclic group optionally bearing one or more C.sub.1-4 alkyl substituent(s); or a group of the formula SR.sup.1, whereinR.sup.1 stands for straight or branched chained C.sub.1-4 alkyl or phenyl-(C.sub.1-4 alkyl); or q represents a group of the formula NR.sup.2 R.sup.3, whereinR.sup.2 and R.sup.3 each represent hydrogen, straight or branched chain C.sub.1-12 alkyl, C.sub.2-6 alkenyl or phenyl-(C.sub.1-4 alkyl);R.sup.4 and R.sup.7 each represent hydrogen, C.sub.1-6 alkyl or phenyl-(C.sub.1-4 alkyl) optionally bearing one or more halogen substituent(s);R.sup.5 and R.sup.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: August 4, 1992
    Assignee: Egis Gyogyszergyar
    Inventors: Jozsef Reiter, Jozsef Barkoczy, Lujza Petocz, Frigyes Gorgenyi, Marton Fekete, Eniko Szirt nee Kiszelly, Gabor Gigler, Istvan Gacsalyi, Istvan Gyertyan, Klara Reiter nee Esses
  • Patent number: 4994448
    Abstract: The new compounds of the general Formula I ##STR1## (wherein R.sub.1 stands for C.sub.1-4 alkyl or aralkyl; andR.sub.2 represents hydroxy; orR.sub.1 and R.sub.2 together form a valency bond;R.sub.3 is hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, phenyl, amino, alkylthio or a group of the Formula --NR.sub.7 R.sub.8 in which R.sub.7 and R.sub.8 may be the same or different and stand for hydrogen, C.sub.1-4 alkyl, phenyl-C.sub.1-4 alkyl, hydroxy-C.sub.1-4 alkyl or di-(C.sub.1-4 alkyl)-amino-C.sub.1-4 alkyl or together with the nitrogen atom they are attached to form a 6-membered heterocyclic ring which may optionally contain a further nitrogen, oxygen or sulfur atom; orR.sub.2 and R.sub.3 together form an oxo (.dbd.O) or thixo (.dbd.S) group;R.sub.4 represents hydrogen, C.sub.1-4 alkyl or phenyl which may optionally bear one or two halogen or nitro substituent(s);Z is a group of the Formula (a) or (b) ##STR2## A.sup.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: February 19, 1991
    Assignee: Egis Gyogyszergyar
    Inventors: Andras Messmer, Gyorgy Hajos, Zsuzsa Juhasz nee Riedl, Pal Benko, Laszlo Pallos, Lujza Petocz, Eniko Szirt nee Kiszelly, Gabor Gigler, Istvan Gyertyan, Maria Hegedus
  • Patent number: 4965259
    Abstract: Dioxazocine derivatives, their preparation and composition containing them, said derivatives being represented by the formula I ##STR1## wherein R.sub.1 represents hydrogen or alkyl having from 1 to 4 carbon atoms,R.sub.2 represents alkyl having from 1 to 4 carbon atoms, andn is equal to 0 or 1,and pharmaceutically acceptable acid addition salts thereof formed with an inorganic or organic acid.Two different reactions are described for making these compounds. They can be formulated into pharmaceutical compositions in the usual manner and exhibit central nervous system affecting activities.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: October 23, 1990
    Assignee: EGIS Gyogyszergyar
    Inventors: Laszlo Rozsa, Lujza Petocz, Eniko Szirt nee Kiszelly, Marton Fekete, Maria Szecsey nee Hegedus, Gabor Gigler, Istvan Gacsalyi
  • Patent number: 4939142
    Abstract: The new compounds of the general Formula I ##STR1## (wherein A stands for a C.sub.2-4 straight or branched chain alkylene group;R.sup.1 and R.sup.2 may be same or different and each stands for hydrogen, halogen, lower alkyl or lower alkoxy; orR.sup.1 and R.sup.2 together form a methylenedioxy group;R.sup.3 and R.sup.4 may be the same or different and each stands for C.sub.1.ident. alkyl or C.sub.3.notident. cycloalkyl orR.sup.3 and R.sup.4 together with the nitrogen atom, they are attached to, form a 4-7 membered ring which may contain as additional ring member an oxygen or sulfur atom or a further nitrogen atom and the latter nitrogen atom may optionally bear a C.sub.
    Type: Grant
    Filed: January 26, 1989
    Date of Patent: July 3, 1990
    Assignee: EGIS Gyogyszergyar
    Inventors: Zoltan Budai, Lujza Petocz, Tibor Mezei, Eniko Szirt nee Kiszelly, Maria Szecsey nee Hegedus, Gabor Gigler, Klara Reiter nee Esses, Aranka Lay nee Konya, Eva Furdyga, Istvan Gertyan, Istvan Gacsalyi
  • Patent number: 4906622
    Abstract: The invention relates to optically active 2-chloro-12-(3-dimethylamino-2-methylpropyl)-12H-dibenzo[d,g][1,3,6]dioxaz ocine of the Formula ##STR1## and pharmaceutically acceptable acid additional salts thereof. The enantiomers are especially active against Parkinsion's disease.The optically active enantiomers are prepared by(a) resolving the racemic 2-chloro-12-(3-dimethylamino-2-methylpropyl)-12H-dibenzo[d,g][1,3,6]-dioxa zocine with a optically active organic acid and separating the enantiomers; or(b) dissolving the racemic 2-chloro-12-(3-dimethylamino-2-methylpropyl)-12H-dibenzo[d,g][1,3,6]-dioxa zocine in an organic solvent, crystallizing and isolating one of the enantiomers, optionally dissolving additional racemic 2-chloro-12-(3-dimethylamino-2-methylpropyl)-12H-dibenzo[d,g][1,3,6]-dioxa zocine in the mother liquor obtained and crystallizing and isolating the other enantiomer, and, if desired, repeating the whole process.
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: March 6, 1990
    Assignee: Egis Gyogyszergyar
    Inventors: Laszlo Rozsa, Lujza Petocz, Eniko Szirt nee Kiszelly, Peter Tompe, Gabor Gigler
  • Patent number: 4883798
    Abstract: The compounds of the general Formula I ##STR1## (wherein R.sup.1 and R.sup.2 may be the same or different and each stands for hydrogen, hydroxy, C.sub.1-6 alkoxy, C.sub.1-6 alkoxy-C.sub.1-6 alkoxy, C.sub.2-6 alkenyloxy or phenyl-(C.sub.1-3 alkoxy), or R.sup.1 and R.sup.2 together form C.sub.1-2 alkylenedioxy; with the proviso that at least one of symbols R.sup.1 and R.sup.2 is other than hydrogen and with the further proviso that R.sup.1 and R.sup.2 can not represent 3,4-dimethoxy substitution) andtheir pharmaceutically acceptable acid addition salts exhibit useful analgesic, antipyretic, anti-inflammatory, anti-anginal and antioxidant effect.
    Type: Grant
    Filed: July 20, 1988
    Date of Patent: November 28, 1989
    Assignee: EGIS Gyogyszergyar
    Inventors: Lujza Petocz, Istvan Simonyi, Ivan Beck, Gabor Gigler, Marton Fekete, Eniko Szirt nee Kiszelly, Attila Mandi, Frigyes Gorgenyi, Andras Dietz, Elemer Jakfalvi, Katalin Zukovics nee Sumeg, Klara Gado, Maria Hegedus
  • Patent number: 4871846
    Abstract: A process for the preparation of condensed as-triazinium derivatives of the formula I ##STR1## and isomers thereof, wherein R.sub.1 inter alia is an alkyl group, R.sub.2 inter alia is hydrogen or an alkyl group and R.sub.3 is hydrogen and where Z is a group of the formula a or b ##STR2## which comprises reacting a compound of the formula II ##STR3## where Y is a group of the formula c or d ##STR4## with a compound of the formula IIaNH.sub.2 --CO--R.sub.2 (IIa)in the presence of a dehydrating agent. The advantage of the process is that it consists of fewer reaction steps and provides higher yields than the known methods. The compounds of formula I are pharmaceutically active known derivatives.
    Type: Grant
    Filed: April 28, 1987
    Date of Patent: October 3, 1989
    Assignee: EGIS Gyogyszergyar
    Inventors: Sandor Batori, Gyorgy Hajos, Andras Messmer, Pal Benko, Laszlo Pallos, Lujza Petocz, Katalin Grasser, Ibolya Kosoczky, Eniko Szirt nee Kiszelly
  • Patent number: 4753938
    Abstract: The invention relates to new compounds of the general Formula I ##STR1## and isomers thereof wherein R.sub.1 is C.sub.1-10 alkyl, C.sub.3-6 cycloalkyl or phenyl, naphthyl or phenyl-(C.sub.1-4 alkyl), wherein the aryl ring of the three latter groups may optionally bear one or more halogen, nitro, trifluoromethyl, amino, hydroxy, C.sub.1-4 alkyl and/or C.sub.1-4 alkoxy substituent(s);R.sub.2 stands for hydrogen, halogen, hydroxy, oxo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, phenyl or naphthyl, wherein the two latter groups may optionally bear one or more halogen, nitro, trifluoromethyl, amino, hydroxy, C.sub.1-4 alkyl and/or C.sub.1-4 alkoxy substituent(s);R.sub.3 represents hydrogen, hydroxy or C.sub.1-4 alkoxy;Z is buta-1,3-dienyl or a group of the general Formula (a) ##STR2## or (b) ##STR3## and X is hydrogen or halogen.The compounds of the general Formula I possess useful pharmacological properties, particularly antidepressant and antiarrhythmial effect.
    Type: Grant
    Filed: October 15, 1985
    Date of Patent: June 28, 1988
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Andras Messmer, Sandor Batori, Gyorgy Hajos, Pal Benko, Laszlo Pallos, Lujza Petocz, Katalin Grasser, Eniko Szirt nee Kiszelly
  • Patent number: 4727074
    Abstract: The invention relates to selected stereoisomers having the E, E or E, Z configuration and within the Formula (I) ##STR1## wherein N is 2-4, A is alkylene or 2 or 3 carbon atoms, R is phenyl or substituted phenyl and R.sup.1 and R.sup.2 are lower alkyl, or, together with the carbon to which attached, form a heterocyclic ring; and pharmaceutically acceptable acid addition salts thereof, a process for their preparation and pharmaceutical compositions comprising the same.The compounds of the general formula (I) can be used in therapy due to their narcosis potentiating, analgesic and antiarrhythmial effect.
    Type: Grant
    Filed: February 8, 1984
    Date of Patent: February 23, 1988
    Assignee: Egyt Gyogyszervegyeszeti Gyar
    Inventors: Zoltan Budai, Tibor Mezei, Aranka Lay nee Konya, Lujza Petocz, Katalin Grasser, Eniko Szirt nee Kiszelly
  • Patent number: 4665083
    Abstract: The invention relates to novel iminothiazolidine derivatives of the formula (I), ##STR1## wherein R.sup.1 and R.sup.3 represent, independently from each other, hydrogen or lower alkyl group,R.sup.3 is nitro or amino group,R stands for halo, lower alkyl, haloalkyl, nitro, amino, hydroxy, lower alkoxy, carboxy or lower alkoxycarbonyl group, andn is 0, 1 or 2,and pharmaceutically acceptable acid addition salts thereof.The iminothiazolidine derivatives of the formula (I) possess valuable antidepressant, antiparkinsonic, antiepileptic and spasmolytic activities.
    Type: Grant
    Filed: April 25, 1985
    Date of Patent: May 12, 1987
    Assignee: Egis Gyogyszergyar
    Inventors: Karoly Lempert, Gyula Hornyak, Ferenc Bartha, Gabor Doleschall, Jozsef Fetter, Jozsef Nyitrai, Gyula Simig, Karoly Zauer, Peter Huszthy, Antal Feller, Lujza Petocz, Eniko Szirt, Katalin Grasser, Edit Berenyi, Zsuzsanna Orr, Etelka Pjeczka
  • Patent number: 4395413
    Abstract: The invention relates to novel oxime ethers of the general formula /I/ and acid addition salts and quaternary ammonium derivatives thereof, ##STR1## wherein A represents a C.sub.2-6 straight or branched alkylene chain,R and R.sup.1 each represent a C.sub.1-6 alkyl group or they form together with the adjacent nitrogen atom a heterocyclic ring containing 4 to 7 carbon atoms and optionally a further hetero atom, i.e. an oxygen, sulfur or nitrogen atom, and said ring may be optionally substituted by a C.sub.1-3 alkyl, phenyl or benzyl group,R.sup.2 and R.sup.3 each denote a hydrogen atom or together form a valency bond,R.sup.4 denotes a C.sub.1-10 alkyl or C.sub.2-10 alkenyl group, andn denotes an integer from 3 to 7.The compounds of the general formula /I/ are prepared according to the invention by reacting a cycloalkane derivative of the general formula /II/ ##STR2## wherein R.sup.2, R.sup.3, R.sup.4 and n have the same meaning as above, whereasY denotes an oxygen or sulphur atom or a .dbd.
    Type: Grant
    Filed: June 24, 1980
    Date of Patent: July 26, 1983
    Assignee: Egyt Gyogyszervegyeszeti Gyar
    Inventors: Zoltan Budai, Aranka Lay nee Konya, Tibor Mezei, Lujza Petocz, Katalin Grasser, Ibolya Kosoczky, Eniko Szirt nee Kiszelly, Peter Gorog
  • Patent number: 4324894
    Abstract: Novel aminoisoquinoline derivatives of the general formula (I) ##STR1## wherein R.sub.1 represents a hydrogen atom or a C.sub.1-4 alkyl group,R.sub.2 represents a hydrogen atom,R.sub.3 represents a hydrogen atom,R.sub.4 represents a morpholinyl group or a piperazinyl group substituted with a pyridyl group, andpharmaceutically acceptable acid addition salts and quaternary derivatives thereof have been prepared. The novel compounds exert narcosis potentiating effects.
    Type: Grant
    Filed: April 10, 1980
    Date of Patent: April 13, 1982
    Assignee: Egyt Gyogyszervegyeszeti Gyar
    Inventors: Pal Benko, Andras Gelleri, Gyorgy Hajos, Andras Messmer, Laszlo Pallos, Lujza Petocz, Ibolya Kosoczky, Katalin Grasser, Peter Gorog, Eniko Szirt nee Kiszelly
  • Patent number: 4303660
    Abstract: The invention relates to novel pyrazolo[1,5-c]quinazoline derivatives of the general formula I ##STR1## wherein R represents a hydrogen atom, a C.sub.1-4 alkyl group or an acyl group,R.sub.1 represents a hydrogen atom, a C.sub.1-12 alkyl group, a C.sub.3-8 cycloalkyl group, a C.sub.2-4 alkenyl group, an aralkyl group, wherein the alkyl group has 1 to 4 carbon atoms, a phenylalkenyl group, wherein the alkenyl group has 2 to 4 carbon atoms, furthermore a carboxy group or a phenyl group optionally substituted by one or more substituents selected from the group consisting of halogen, hydroxy, C.sub.1-4 alkoxy, nitro or di(C.sub.1-4 alkyl)amino groups, orR and R.sub.1 may form together a valence bond,R.sub.2 represents a hydrogen atom, a C.sub.1-4 alkyl or a phenyl group, orR.sub.1 and R.sub.2 may form together a C.sub.2-7 alkylene group,R.sub.
    Type: Grant
    Filed: May 16, 1980
    Date of Patent: December 1, 1981
    Assignee: Egyt Gyogyszervegyeszeti Gyar
    Inventors: Edit Berenyi nee Poldermann, Eniko Szirt nee Kiszelly, Peter Gorog, Lujza Petocz, Ibolya Kosoczky, Agnes Kovacs nee Palotai, Gabriella rmos nee Lassu
  • Patent number: 4083978
    Abstract: Oxime ethers of the formula ##STR1## wherein R stands for a phenyl group which may be substituted by a halogen chlorine atom or by one to three methoxy groups;R.sup.1 and R.sup.2 denote each a hydrogen atom or together a valence bond;A denotes a C.sub.2 -C.sub.4 straight or branched-chain alkylene group;B is piperazino having a benzyl or C.sub.1-3 alkyl substituent on the nitrogen atom; andn denotes an integer from 3 to 6, have nicotine-lethality inhibiting, tetrabenazine-antagonistic and antiepileptic effects.This invention relates to novel oxime ethers possessing valuable therapeutic effects and their optical isomers and salts.The noval compounds have the general formula I ##STR2## wherein R stands for a phenyl group which may be substituted by a chlorine atom or by one to three methoxy groups;R.sup.1 and R.sup.2 denote each a hydrogen atom or together a valence bond;A denotes a C.sub.2 -C.sub.4 straight or branched-chain alkylene group; is piperazino having a benzyl or C.sub.
    Type: Grant
    Filed: January 27, 1976
    Date of Patent: April 11, 1978
    Assignee: Egyt Gyogyszervegyeszeti Gyar
    Inventors: Zoltan Budai, Aranka Lay nee Konya, Tibor Mezei, Katalin Grasser, Eniko Szirt nee Kiszelly, Ibolya Kosoczky, Lujza E. Petocz
  • Patent number: 4077999
    Abstract: The invention relates to novel oxime ethers of the formula I ##STR1## wherein R stands for a phenyl group which may be substituted by a halogen atom or by one or more C.sub.1 -C.sub.4 alkoxy, hydroxyl, nitro or di(C.sub.1 -C.sub.3 alkyl)amino groups,R.sup.1 and R.sup.2 denote each a hydrogen atom or together a valence bond,A denotes a C.sub.2 -C.sub.4 straight or branched-chain alkylene group,N denotes an integer from 3 to 10, andR.sup.3 and R.sup.4 denote a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, furthermore to acid addition salts and quaternary ammonium salts thereof. These new compounds are biologically active, and possess primarily local analgesic, spasmolytic, nicotine-lethality inhibiting, tetrabenazine-antagonistic and tetra-cor-spasm inhibiting effects.
    Type: Grant
    Filed: December 10, 1976
    Date of Patent: March 7, 1978
    Assignee: Egyt Gyogyszervegyeszeti Gyar
    Inventors: Zoltan Budai, Aranka Lay nee Konya, Tibor Mezei, Katalin Grasser, Eniko Szirt nee Kiszelly, Ibolya Kosoczky, Lujza E. Petocz