Patents by Inventor Gabor Kovacs
Gabor Kovacs 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).
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Publication number: 20080248874Abstract: Apparatus for decreasing the circulation of money of small denominations and coins, includes a first input unit for inputting the amount to be paid, connected to a central unit, a second input unit for inputting a rounded amount to be paid connected to the central unit and controlling a rounding unit, a display unit showing a rounded payable sum defined by the rounding unit and a printing unit connected to the central unit. A method and arrangement for drawing lots include an input unit for entering data of participation in the drawing, and a drawing centre including a database of game rules, a game rule interpreting unit, an odds creating unit and a drawing unit connected to a prize indicating unit. The input unit is connected to the drawing centre via a control unit; a game database is connected to the control unit.Type: ApplicationFiled: May 3, 2005Publication date: October 9, 2008Inventors: Tamas Pajor, Robert Kassai, Gabor Kovacs, Andras Sugar
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Patent number: 5716986Abstract: This invention relates to new oxaindene derivatives, a process for the preparation thereof and pharmaceutical compositions comprising the same.The compounds according to the invention are characterized by the general formula (1) ##STR1## wherein R.sup.1 represents lower C.sub.1-4 alkyl, lower C.sub.1-4 alkoxy or lower C.sub.3-6 cycloalkyl,R.sup.2 stands for hydrogen, lower C.sub.1-4 alkyl or lower C.sub.3-6 cycloalkyl,R.sup.3 stands for hydrogen, lower C.sub.1-4 alkyl, lower C.sub.1-4 alkoxy or benzyloxy,X denotes hydrogen, an aliphatic C.sub.1-4 -acyl or benzoyl or naphthoyl group, optionally substituted by 1 or more nitro or C.sub.1-4 -alkoxy group(s) or a group of the formula R.sup.5 R.sup.6 N--R.sup.7 --, wherein R.sup.7 represents lower C.sub.1-4 alkylene and R.sup.5 and R.sup.6 each represent lower C.sub.1-4 alkyl, or R.sup.5 and R.sup.Type: GrantFiled: June 27, 1996Date of Patent: February 10, 1998Assignee: Egis Gyogyszergyar Rt.Inventors: Csaba Szantay, Lajos Novak, Peter Kovacs, Klara Gado, Gabor Gigler, Julianna Takacs nee Bitai, Andras Egyed, Daniel Bozsing, Gyorgy Pirok, Katalin Szemeredi, Margit Csorgo, Sandor Drabant, Gabor Blasko, Gyula Simig, Gabor Kovacs
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Patent number: 5294712Abstract: The invention relates to a new process for the preparation of compounds of the Formula I ##STR1## (wherein R stands for hydrogen or methyl) and pharmaceutically acceptable salts thereof which comprises reacting a compound of the Formula V ##STR2## (wherein R.sup.1 and R.sup.2 stand for an aliphatic acyloxy group comprising 2-6 carbon atoms and optionally substituted by halogen: or for an aromatic acyloxy group comprising 7-11 carbon atoms) with an amine of the Formula VI ##STR3## (wherein R has the same meaning as stated above) or a salt thereof and subjecting the compound of the Formula VII ##STR4## thus obtained (wherein R, R.sup.1 and R.sup.2 are as stated above) to hydrolysis after or without isolation and if desired converting the compound of the Formula I thus obtained into a salt thereof or setting free the same from its salt.The compounds of the Formula I are known antibacterial agents.Type: GrantFiled: September 14, 1990Date of Patent: March 15, 1994Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.Inventors: Istvan Hermecz, Geza Keresturi, Lelle V. Debreczy, Agnes Horvath, Maria Balogh, Gabor Kovacs, Tamas Szuts, Peter Ritli, Judit Sipos, Aniko Pajor
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Patent number: 5284950Abstract: A method of using a compound of the Formula (V) ##STR1## or a pharmaceutically acceptable salt thereof is disclosed, wherein R.sup.1 and R.sup.2 are each C.sub.1 to C.sub.6 aliphatic acyloxy, unsubstituted or substituted by halogen, or are each C.sub.7 to C.sub.Type: GrantFiled: April 25, 1991Date of Patent: February 8, 1994Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.Inventors: Istvan Hermecz, Geza Kereszturi, Lelle Vasvari nee Debreczy, Agnes Horvath, Maria Balogh, Gabor Kovacs, Tamas Szuts, Peter Ritli, Judit Sipos, Aniko Pajor
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Patent number: 5235097Abstract: The invention relates to an improved process for the preparation of 2,2-dimethyl-5-(2,5-dimethylphenoxy)-pentanoic acid of Formula (I) ##STR1## which comprises reacting an ester of the general Formula (X) ##STR2## wherein X represents halogen and Z stands for a straight or branched chain C.sub.1-8 alkylene group optionally substituted by one or two 2,2-dimethyl-5-halopentanoyloxy group(s), wherein halo represents chlorine or bromine, and in which alkylene group one or two methylene group(s) may be optionally replaced either by hetero atom(s) or by a bivalent heterocyclic group--with an alkali salt of 2,5-dimethylphenol of Formula (II) ##STR3## or with an ester of the latter formed with a lower alkanoic acid, and hydrolizing the aryloxy-substituted ester of the general Formula (XI) thus obtained. ##STR4## Furthermore the invention relates to intermediate compounds of the general Formula (X), wherein X and Z are as stated above, and to a process for the preparation thereof.Type: GrantFiled: June 1, 1992Date of Patent: August 10, 1993Assignee: EGIS GyogyszergyarInventors: Zoltan Zubovics, Gabor Feher, Lajos Toldi, Gabor Kovacs, Antal Simay, Eva Kovacs nee Bozo, Imre Moravcsik, Ferenc Szederkenyi, Gyorgy Krasznai, Gyorgyi Vereczkey nee Donath, Kalman Nagy
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Patent number: 5155260Abstract: The invention relates to an improved process for the preparation of 2,2-dimethyl-5-(2,5-dimethylphenoxy)-pentanoic acid of Formula (I) ##STR1## which comprises reacting an ester of the general Formula (X) ##STR2## wherein X represents halogen and Z stands for a straight or branched chain C.sub.1-8 alkylene group optionally substituted by one or two 2,2-dimethyl-5-halopentanoyloxy group(s), wherein halo represents chlorine or bromine, and in which alkylene group one or two methylene group(s) may be optionally replaced either by hetero atom(s) or by a bivalent heterocyclic group--with an alkali salt of 2,5-dimethylphenol of Formula (II) ##STR3## or with an ester of the latter formed with a lower alkanoic acid, and hydrolizing the aryloxy-substituted ester of the general Formula (XI) thus obtained. Furthermore the invention relates to intermediate compounds of the general Formula (X), wherein X and Z are as stated above, and to a process for the preparation thereof.Type: GrantFiled: May 10, 1991Date of Patent: October 13, 1992Assignee: Egis GyogyszergyarInventors: Zoltan Zubovics, Gabor Feher, Lajos Toldi, Gabor Kovacs, Antal Simay, Eva Kovacs nee Bozo, Imre Moravcsik, Ferenc Szederkenyi, Gyorgy Krasznai, Gyorgyi Vereczkey nee Donath, Kalman Nagy
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Patent number: 4988730Abstract: The invention relates to novel diphenylpropylamine derivatives of the general formula (I). ##STR1## R.sup.1 stands for hydrogen or a methyl group; R.sup.2 stands for hydrogen, a methyl or n-decyl group;Z means a phenyl group substituted by R.sup.3, R.sup.4 and R.sup.5, whereinR.sup.3 means hydrogen, fluorine, chlorine or bromine, or a nitro, C.sub.1-12 alkyl, C.sub.1-4 alkoxy, phenoxy or benzyloxy group;R.sup.4 and R.sup.5 represent hydrogen, chlorine or a hydroxy, alkoxy, benzyloxy, acetamino or carboxy group; orR.sup.4 and R.sup.5 together form a methylendioxy group;orZ may stand for a 4-methoxynaphtyl or 4-ethoxy-naphthyl group; andR.sup.6 stands for hydrogen or fluorine, with the proviso that each of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.6 cannot simultaneously stand for hydrogen, as well as their physiologically acceptable acid addition salts.The invention also relates to a process for the preparation of these compounds and to the pharmaceutical compositions containing these compounds.Type: GrantFiled: July 21, 1989Date of Patent: January 29, 1991Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyar RTInventors: Dezso Korbonits, Pal Kiss, Laszlo Szekeres, Gyula Papp, Gabor Kovacs, Andrea Santane Csutor, Sandor Virag, Eva Udvari, Imre Bata, Katalin Marmarosi nee Kellner, Laszlo Tardos, Peter Kormoczy, Vera Gergely, Zoltan Vargai
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Patent number: 4981966Abstract: The invention relates to a new process for the preparation of compounds of the Formula I ##STR1## (wherein R stands for hydrogen or methyl) and pharmaceutically acceptable salts thereof which comprises reacting a compound of the Formula V ##STR2## (wherein R.sup.1 and R.sup.2 stand for an aliphatic acyloxy group comprising 2-6 carbon atoms and optionally substituted by halogen; or for an aromatic acyloxy group comprising 7-11 carbon atoms) with an amine of the Formula VI ##STR3## (wherein R has the same meaning as stated above) or a salt thereof and subjecting the compound of the Formula VII ##STR4## thus obtained (wherein R, R.sup.1 and R.sup.2 are as stated above) to hydrolysis after or without isolation and if desired converting the compound of the Formula I thus obtained into a salt thereof or setting free the same from its salt.The compounds of the Formula I are known antibacterial agents.Type: GrantFiled: January 10, 1989Date of Patent: January 1, 1991Assignee: Chinoin Gyogyszer Es Vegyeszeti Termekek Gyara Rt.Inventors: Istvan Hermecz, Geza Kereszturi, Lelle Vasvari nee Debreczy, Agnes Horvath, Maria Balogh, Gabor Kovacs, Tamas Szuts, Peter Ritli, Judit Sipos, Aniko Pajor
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Patent number: 4871849Abstract: The present invention relates to a process for the preparation of compounds of the general Formula I ##STR1## and pharmaceutically acceptable salts thereof (wherein R stands for piperazinyl or 4-methyl-piperazinyl) which comprises reacting a compound of the general Formula II ##STR2## (wherein R.sup.1 and R.sup.2 stand for halogen; an aliphatic acyloxy group comprising 2-6 carbon atoms and optionally substituted by halogen; or an aromatic acyloxy group comprising 7-11 carbon atoms) with a piperazine of the general Formula III ##STR3## (wherein R.sup.3 represent hydrogen or methyl) or a salt thereof, hydrolysing the compound of the general Formula IV ##STR4## thus obtained (wherein R, R.sup.1 and R.sup.2 are as stated above) without or after hydrolysis and if desired converting the compound of the general Formula I thus obtained into a salt thereof or setting free the same from its salt.The compounds of the general Formula I are known antibacterial agents.Type: GrantFiled: June 24, 1987Date of Patent: October 3, 1989Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.Inventors: Istvan Hermecz, Geza Kereszturi, Lelle Vasvavi, Agnes Horvath, Maria Balogh, Gabor Kovacs, Tamas Szuts, Peter Ritli, Judit Sipos, Aniko Pajor
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Patent number: 4851416Abstract: The invention relates to novel racemic or optically active berban derivatives of the formula (I) ##STR1## wherein R.sup.1 and R.sup.2 represent independently from the other a hydroxyl, straight or branched chain alkoxy group 1 to 6 carbon atoms or R.sup.1 and R.sup.2 together represent a C.sub.1-3 alkylenedioxy group;R.sup.3 and R.sup.4 represent independently from the other hydrogen, straight or branched chain alkyl group, having 1 to 6 carbon atoms and optionally substituted by hydroxyl group, or a C.sub.2-6 alkoxycarbonyl or cyano group; andR.sup.5 represents hydrogen, straight or branched chain alkyl group having 1 to 6 carbon atoms, C.sub.1-7 aliphatic or aromatic acyl group or C.sub.1-7 alkylsulphonyl or arylsulphonyl group, anda salt thereof, to pharmaceutical compositions containing them, to the use as well as to process for preparing the novel compounds. The compounds of the formula (I) are selective .alpha..sub.Type: GrantFiled: May 23, 1986Date of Patent: July 25, 1989Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.Inventors: Szilveszter Vizi, Csaba Szantai, Lajos Szabo, Istvan Toth, Gabor Kovacs, Jeno Marton, Laszlo Harsing, Gyorgy Somogyi, Jozsef Gaal
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Patent number: 4840949Abstract: The invention relates to new oxidiazole-alkyl-purine-derivatives of the Formula I ##STR1## and pharmaceutically acceptable salts thereof wherein A stands for C.sub.1-4 alkylene andR.sup.1 represents C.sub.1-6 alkyl, hydroxyalkyl, halogenoalkyl, carboxyalkyl, C.sub.5-6 cycloalkyl or aminoalkyl of the Formula --(CH.sub.2).sub.n --NR.sup.2 R.sup.3 in which group n is an integer 1-3; R.sup.2 and R.sup.3 each stand for hydrogen or C.sub.1-4 alkyl or together with the adjacent nitrogen atom they are attached to form a 5- or 6-membered nitrogen containing heterocyclic ring which may optionally comprise a further nitrogen atom or an oxygen atom as heteroatom; orR.sup.1 stands for phenyl, hydroxyphenyl, carboxyphenyl, benzyl or dimethoxybenzylThe compounds of the Formula I can be prepared by methods known per se and can be used in therapy as antitussive agents.Type: GrantFiled: October 9, 1987Date of Patent: June 20, 1989Assignee: Chinoin Gyogyszer Es Vegyeszeti Termekek Gyara Rt.Inventors: Dezso Korbonits, Emil Minker, Zoltan Vargai, Gergely Heja, Gabor Kovacs, Agnes Gottsegen, Sandor Antus, Sandor Virag, Andrea Bolehovszky, Jeno Marton, Katalin Marmarosi nee Kellner, Lorand Debreczeni, Laszlo Tardos, Peter Kormoczy, Vera Gergely, Gabor Horvath
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Patent number: 4814174Abstract: The invention relates to a transdermal laminated pharmaceutical composition (plaster) having prolonged effect, wherein one or more storing layer(s) comprising the active ingredient, an ethylene/vinyl acetate copolymer regulating layer and an adhesive layer are applied onto the carrier.The pharmaceutical composition is prepared by coupling a carrier comprising the active ingredient with a regulating layer consisting of an ethylene/vinyl acetate copolymer foil having a vinal acetate content of 2-40 molar %. The foil is previously irradiated in a thickness of 100-300 .mu.m with a high-energy irradiation in a dose of 1-15 Mrad--preferably with electrone radiation--and thereafter stretched at 80.degree.-90.degree. C. to a thickness of 2-200 .mu.m.The system comprising the carrier and the regulating layer is subsequently coupled with an adhesive layer.Type: GrantFiled: September 28, 1987Date of Patent: March 21, 1989Assignees: Egis Gyogyszergyar, Muanyagipari Kutato IntezetInventors: Iren Barta, Pal Fekete, Laszlo Pallos, Gabor Kovacs, Lajos Mahr
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Patent number: 4806645Abstract: The invention relates to new 6-fluoro-7-chloro-1-methylamino-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid/boric acid anhydrides of the general Formula I ##STR1## (wherein R and R.sup.1 stand for halogen; an aliphatic acyloxy group comprising 2-6 carbon atoms and optionally substituted by halogen; or an aromatic acyloxy group comprising 7-11 carbon atoms).The new compounds of the general Formula I are valuable intermediates useful in the preparation of the antibacterial agent 6-fluoro-1-methylamino-7-(4-methyl-piperazino)-4-oxo-1,4-dihydro-quinoline -3- carboxylic acid.The new compounds of the general Formula I may be prepared by reacting a compound of the Formula II ##STR2## or a compound of the general Formula III ##STR3## (wherein R.sup.2 stands for alkyl comprising 1-4 carbon atoms) with hydrogen fluoro borate of the Formula IVHBF.sub.4 /IV/or a borone trihalide of the general Formula VBX.sub.Type: GrantFiled: August 7, 1987Date of Patent: February 21, 1989Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.Inventors: Istvan Hermecz, Geza Kereszturi, Lelle Vasvari, Agnes Horvath, Maria Balogh, Gabor Kovacs, Zoltan Meszaros, deceased, Peter Ritli, Judit Sipos, Aniko Pajor
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Patent number: 4803274Abstract: The invention relates to a process for the preparation of compounds of the Formula I ##STR1## (wherein R and R.sup.1 stand for an aliphatic acyloxy group comprising 2-5 carbon atoms and optionally substituted by halogen or for an aromatic acyloxy group comprising 7-11 carbon atoms), which comprises reacting a compound of the general Formula II ##STR2## (wherein R.sup.2 stands for hydrogen or alkyl comprising 1-4 carbon atoms) with a boron derivative of the Formula III ##STR3## (wherein R.sup.3, R.sup.4 and R.sup.5 stand for an alkyl group comprising 1-4 carbon atoms and optionally substituted by halogen or for an aryl group comprising 6-10 carbon atoms).The new compounds of the general Formula I are useful pharmaceutical intermediates.Type: GrantFiled: August 7, 1987Date of Patent: February 7, 1989Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.Inventors: Istvan Hermecz, Geza Kereszturi, Lelle Vasvari, Agnes Horvath, Maria Balogh, Gabor Kovacs, Zoltan Meszaros, deceased, Peter Ritli, Judit Sipos, Aniko Pajor
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Patent number: 4740523Abstract: The invention relates to novel interfuranylene-prostacyclin derivatives of the general formula (I) ##STR1## wherein R.sup.1 stands for hydrogen or a straight or branched chain C.sub.1-6 alkyl group, an inorganic cation or for the protonated form of a base containing an amino group;R.sup.2 stands for hydrogen, a C.sub.1-4 alkanoyl or benzoyl group, a monosubstituted benzoyl, trialkylsilyl or an alkoxyalkyl group;R.sup.3 stands for a straight or branched chain C.sub.1-6 alkyl group, a phenyl group optionally substituted by halogen or by a C.sub.1-4 alkyl group, a heteroaryl group optionally substituted by halogen or by a C.sub.1-4 alkyl group or a cycloalkyl group;A stands for an ethylene or for a cis- or trans-vinylene or --C.tbd.C-- group;B means a chemical bond, a --CHR.sup.5 --, --CHR.sup.5 --CH.sub.2 -- or a --CH.sub.2 --O-- group: andR.sup.5 means hydrogen or a C.sub.1-4 alkyl group.Type: GrantFiled: January 17, 1986Date of Patent: April 26, 1988Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyar RtInventors: Geza Galambos, Jozsef Ivanics, Gyorgy Dorman, Karoly Kanay, Istvan Tomoskozy, Gabor Kovacs, Istvan Stadler, Peter Kormoczi, Pal Hadhazy, Sandor Virag, Miklos Kiss
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Patent number: 4735965Abstract: The invention relates to new 7-oxo-PGI.sub.2 -ephedrine salt analogues of the Formula I ##STR1## wherein A stands for --(CH.sub.2).sub.2 --, cis or trans --CH.dbd.CH-- or --C.tbd.C--;R.sup.1 is lower alkyl or hydrogen;B represents a chemical bond, --CH.sub.2 -- or --CR.sup.2 R.sup.3 ;R.sup.2 stands for lower alkyl or hydrogen;R.sup.3 represents lower alkyl or hydrogen;X is a chemical bond, --O-- or --CH.sub.2 --;R.sup.4 stands for C.sub.1-6 alkyl, C.sub.4-7 cycloalkyl, C.sub.1-6 fluoroalkyl, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, phenyl, substituted phenyl or heteroaryl.The salts of the Formula I show the same pharmacological profile as the sodium salt of PGI.sub.2, they inhibit blood aggregation and the secretion of gastric acid, are useful in the prevention of anginal attacks.Type: GrantFiled: May 28, 1986Date of Patent: April 5, 1988Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.Inventors: Gabor Kovacs, Geza Galambos, Istvan Tomoskozi, Karoly Kanai, Peter Gyory, Peter Kormoczy, Istvan Stadler, Laszlo Szekeres, Gyula Papp, Eva Udvary, Pal Hadhazy, Jeno Marton, Gyorgy Dorman
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Patent number: 4706711Abstract: A technical hose with foam insert, expediently a maritime swimming hose for drawing-off oil, as well as to the process for the production thereof. The hose according to the invention consists of the elastic cross-linked elastomer layer containing also fibre-reinforcement, of the foam layer with closed cells arranged above said layer and assuring swimming ability, as well as of the new type of outer coating sheet.The outer coating sheet is a multi-layer system, the elementary layers are previously partially cross-linked, in their cross-section inhomogenous elastomer layers, stretched longitudinally in a given case, being interconnected and connected to the foam layer, respectively, by means of thermally and/or chemically activated adhesive layers.Type: GrantFiled: September 12, 1985Date of Patent: November 17, 1987Assignee: Taurus Gumiipari VallalatInventors: Tibor Czvikovszky, Gabor Kovacs, Endre Lakner, Lajos Mahr, Agnes Somogyi, Sandor Mikes, Gyorgy Kegly, Istvan Muzsai, Laszlo Palotas, Nandor Pfisztner
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Patent number: 4670440Abstract: N,N,N-trimethyl-2-hydroxyethyl-ammonium-[1-ethyl-6-fluoro-4-oxo-7-(1-pipera zinyl)-1,4-dihydro-quinolizine-3-carboxylate] of the formula I ##STR1## as a norfloxacin antimicrobial salt capable of enteral administration.Type: GrantFiled: April 21, 1986Date of Patent: June 2, 1987Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara RT.Inventors: Tamas Szuts, Peter Szentmiklosi, Jozsef Lengyel, Istvan Hermecz, Lelle Vasvari nee Debreczy, Agnes Horvath, Geza Kerszturi, Gabor Kovacs, Gabor Horvath, Katalin Marmarosi nee Kellner
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Patent number: 4666912Abstract: The invention relates to a process for the restoration and prevention of gastrointestinal injuries, which comprises treating a patient with an effective dose of racemic or optically active 1,6-dimethyl-4-oxo-1,6,7,8,9,9a-hexahydro-4H-pyrimido[1,2-a]pyrimidine-3-c arboxamide.Type: GrantFiled: March 22, 1985Date of Patent: May 19, 1987Assignee: Chinoin Gyogyszer es Vegyeszeti Termeker Gyara RTInventors: Zoltan Meszaros, Jozse Knoll, Istvan Hurmecz, Peter Szentmiklosi, Agnes Horvath, Lelle Vasvari nee Debreczy, Gabor Kovacs, Klara Gyires, Sandor Virag
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Patent number: 4638002Abstract: The invention relates to new 2,3,4-trinor-1,5-inter-m-phenylene-PGI.sub.2 derivatives of the formula (I) ##STR1## wherein A stands for carboxy, cyano, tetrazolyl or --COOR.sup.3 or --CONR.sup.1 R.sup.2 ;R.sup.3 is C.sub.1-4 alkyl or an equivalent of a pharmacologically acceptable cation:R.sup.1 and R.sup.2 each stands for hydrogen, phenyl; C.sub.1-5 alkyl, optionally substituted by carboxy, hydroxy, phenyl or C.sub.2-5 alkoxycarbonyl; or C.sub.1-4 alkylsulfonyl; orR.sup.1 and R.sup.2 together form an .alpha.,.omega.-alkylene chain containing 3-6 carbon atoms;B stands for oxygen or methylene;Y is optionally bromo-substituted vinylene or a --C.tbd.C-- group:R.sup.4 stands for hydrogen or tetrahydro-pyran-2-yl;R.sup.5 represents an alkyl group containing 5-9 carbon atoms, which can be optionally interrupted by one or more oxygen atom(s) or --CH.dbd.CH-- or --C.tbd.Type: GrantFiled: December 30, 1983Date of Patent: January 20, 1987Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.Inventors: Istvan Szekely, Sandor Botar, Krisztina Dolgos nee Kekesi, Bela Bertok, Antal Gajary, Tamas Szabolcsi, Gabor Kovacs, Marianna Lovasz nee Gaspar