baber/WOPTO huggingface dataset:
Patent LU-501958-B1 (LU)
Title: Graph structure learning based detection method for abnormal users
Inventor: LIU ZHAOWEI
IPC: G06F16/2458
Filed: 2022-04-27
Granted: 2023-10-27
Abstract: The present invention discloses a graph structure learning based detection method for abnormal users. The method includes defining various constraint functions through a graph neural network model optimization method, so as to realize learning of graph neural network model weights and graph structure features and to enhance robustness of a model. Various graph structures are learned from node representations so as to mine potential node information, and quality of low-dimensional vectors of nodes is improved by means of an attention mechanism, thus greatly improving accuracy of detecting abnormal users in the case of unbalanced sample categories.
Patent LU-502287-B1 (LU)
Title: Detection of malicious activity
Inventor: RIMON AMOS AVRAHAM
IPC: G06F21/55
Filed: 2022-06-15
Granted: 2023-12-15
Abstract: A method of detecting anomalous events indicative of malicious activity is described. The method comprises receiving a log of an event comprising a plurality of values, the plurality of values comprising known values corresponding to each of a plurality of attributes of the event and generating a masked log by masking a value in the received log, the masked value corresponding to one of the attributes. The method further comprises, based on the masked log and a trained machine learning model, generating a distribution of probabilities for possible values of the masked value, wherein the trained machine learning model is based on a plurality of masked logs of events, and determining that the event is an anomalous event based on a comparison of the known value of the masked value and the distribution of probabilities.
Patent NO-300959-B1 (NO)
Inventor: UEBEREGGER HENRY
IPC: B29C65/00
Filed: 1988-06-13
Abstract: Of two edges (14, 16) to be joined together of a multilayer foil, the inner edge (16) is obliquely trimmed in the longitudinal direction prior to the pressing together in such a way that the layer (6) located remote from the surfaces (10, 12) to be pressed together protrudes beyond the other layers. If the two layers (14, 16) are pressed together during the welding operation by means of two tool elements, not shown, then the inner layer (6) of the inner edge (16) overflows so as to form one uninterrupted layer with the inner layer (6) of the outer edge (14). When the foil is used as packaging material, in particular as a tubular liner for a packaging tube, it is assured that the product to be packaged will come into contact only with the inner layer (6), so that an undesirable reaction with one of the other layers is avoided.
Patent NO-300886-B1 (NO)
Inventor: ABATE ALESSANDRO
IPC: B65B61/06
Filed: 1989-09-04
Abstract: A packaging device serves to continuously separate packages from chains of interconnected packages. It comprises a frame in which the chain (2) of packages comprising equidistant package regions and regions connecting the latter, can be guided along a predetermined path. Several cutters (16) are provided which are arranged at a distance from the connecting regions of the chain (2) of packages and are movable along the latter at the same speed and which can be brought into engagement in the direction perpendicular to the chain of (2) packages with the connecting regions thereof for severance thereof. 
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Patent NO-301279-B1 (NO)
Inventor: GEYSEN HENDRIK MARIO
IPC: G01N33/531
Filed: 1991-08-15
Abstract: A method for the separation of at least one specific binding entity from a mixture of binding entities, comprising the steps of contacting said mixture of binding entities with an immobilized peptide in which said peptide specifically binds to said specific binding entity, and separating the immobilized peptide/specific binding entity complex from the mixture of binding entities.
Patent NO-302762-B1 (NO)
Inventor: DONCHE ALAIN
IPC: C09K8/42
Filed: 1993-02-10
Abstract: Use of scleroglucan alone or of mixtures of scleroglucan with a polyalcohol or a dialdehyde as cementation spacers during oil drilling operations.
Patent NO-309862-B1 (NO)
Inventor: NOFRE CLAUDE
IPC: A23L27/30
Filed: 1994-12-30
Abstract: Lower alkyl esters of compounds of the formula   <IMAGE>   wherein Z is hydrogen or hydroxyl and R is a hydrocarbyl group optionally substituted by hydroxy and/or alkoxy group, are useful as sweetening agents.
Patent NO-313474-B1 (NO)
Title: Innretning for bestemmelse av kursvinkelen til et fartöy
Inventor: HOFFMANN HEINO
IPC: G01C19/28
Filed: 1995-07-21
Abstract: Det beskrives en fremgangsmåte for utlesing av et gyroapparat. Det som kjennetegner oppfinnelsen er at registreringen av gyrodata skjer ved hjelp av en absoluttvinkelutlesing.For gjennomføring av den nye fremgangsmåte foreslås det et gyroapparat med et gyroavfølingssystem, hvor gyro-avfølfngssystemet er koplet med en dreibar avfølingsbar henholdsvis avfølende innretning.Fremgangsmåten kan også gjennomføres med et gyroapparat med et gyroavfølingssystem, hvor det på siden av gyroapparatet er anordnet en utlesingskomponent (eksempelvis CCD-sensor) som avfølende innretning, som direkte avføler horisontale og vertikale *absolutt-vinkelmarkeringer på gyroapparatet.
Patent NO-318663-B1 (NO)
Inventor: WALTON JR WILLIAM B
IPC: H01Q1/02
Filed: 1998-03-18
Abstract: A system for preventing the interruption of satellite communications between an earth antenna and a satellite during inclement weather. The system is comprised of a cover that is adapted to be positioned on the opening of the satellite cover so as to reduce the likelihood of liquid water accumulating on the front reflecting surface of the antenna. The cover and the front reflecting surface further define a space and an air circulation system circulates air in the space. The circulating air increases the air pressure in the space relative to the surrounding atmosphere and pressurized air then travels through the cover and blows water accumulating on the outer surface of the cover off of the outer surface to further reduce the likelihood that accumulations of water on the outer surface of the cover will result in interruptions to satellite communications with the earth based satellite antenna.
Patent AT-504933-B1 (AT)
IPC: E05B9/10
Filed: 2007-02-08
Granted: 2009-03-15
Abstract: The invention relates to a lock, particularly a door lock for mortise locks, wherein the housing has a cylindrical housing section (1) and a U-shaped housing section (2) that radially protrudes therefrom, the lock bit (4) being seated on a lock bit shaft (5) that is rotationally disposed in an axial through hole in the cylindrical housing section (1), and a lock bit resetting device being provided. The device provides two reversing devices (8, 9), which mutually create the reversing motion of the lock bit shaft (5), each having a control cam extending in some regions obliquely to the lock bit shaft (5), wherein along the control com a first reversing element (8a, 9a), which is disposed on the outside of the lock bit shaft (5) and is rotationally connected thereto, engages in a second reversing element (8b, 9b), which can be displaced in the housing only axially and to which a return spring (11) applies tension. The control cams extending in some regions obliquely to the lock bit shaft (5) are mirror-inversely disposed with regard to each other in the two reversing devices (8, 9), and the second reversing elements (8b, 9b) can be displaced in the opposite direction in order to create the reversing motion of the lock bit shaft (5).
Patent AT-509026-B1 (AT)
Title: Verfahren zur bestimmung von als passpunkt einsetzbaren bildausschnitten eines masterbildes
IPC: G06K9/62
Filed: 2009-04-22
Granted: 2013-04-15
Abstract: Die vorliegende Erfindung betrifft ein Verfahren zur Bestimmung von als Passpunkt einsetzbaren Bildausschnitten eines Masterbildes (1), das als Vorlage bei der Prüfung von Gegenständen eingesetzt wird. Erfindungsgemäß ist vorgesehen,- dass im Masterbild (1) Ausgangsbildausschnitte (A) vorgegeben werden,- dass den Ausgangsbildausschnitten (A) vorgegebene Verschiebungsvektoren (3) zugeordnet werden, mit denen diese Bildausschnitte über das Masterbild (1) in eine jeweils der Anzahl der Verschiebungsvektoren (3) entsprechende Anzahl von Positionen (5) verschoben werden,- dass für jeden Ausgangsbildausschnitt (A) in jeder der Positionen (5) mit einem vorgegebenen Korrelationsmaß oder Fehlermaß der Korrelationsmaßwert bzw. Fehlermaßwert zwischen dem Ausgangsbildausschnitt (A) und dem sich an dieser Position (5) befindlichen, vorteilhafterweise gleich groß gewählten Bildausschnitt des Masterbildes (1) ermittelt wird, und- dass für jeden Ausgangsbildausschnitt (A) der maximale Korrelationsmaßwert cmax(A) bzw. der minimale Fehlerwert cmin(A) bezüglich des Bildbereiches des Masterbildes (1), über den der verschobene Ausgangsbildbereich (A) verschoben wurde, berechnet wird und- dass der Ausgangsbildausschnitt (A) als ein zur Prüfung von Gegenständen geeigneter Passpunkt des Masterbildes (1) angesehen wird, wenn der Wert des Qualifikationsmaßes 1-cmax(A) bzw. cmin(A) einen vorgegebenen Mindestwert übersteigt.
Patent AT-500496-B1 (AT)
Inventor: POLLACH GUENTER DIPL ING DR
IPC: C13B10/00
Filed: 2000-05-16
Granted: 2006-06-15
Abstract: A method for producing sugar or sugar-containing products from sugar-containing vegetable raw materials involves production the sugar or sugar-containing products in the presence of added natural food-compatible resins. An extraction liquid containing the natural food-compatible resins is used in the method. As a result of the method, sugar or sugar-containing product is manufactured that also includes the natural food-compatible resins.
Patent BR-0008155-B1 (BR)
Inventor: VILJANEN REIJO
IPC: B23D59/00
Filed: 2000-02-10
Abstract: A sawing method for loosening from the blank (3) a woodboard or a board of non-magnetic material for improving sawing accuracy, in which method the loose sawing is carried out by means of a metallic saw blade (1) and the saw blade is steered to stay in the aimed sawing line. The blade position in relation to the aimed sawing line inside the sawed blank is measured by means of a distance measuring device (7) and the blade position is controlled to stay in the aimed sawing line by controlling for the blade needed deviation force by means of the magnetic field forming device (5) based on the distance value informed by the measuring device (7).
Patent BR-0016606-B1 (BR)
Inventor: MARTEL BRYAN
IPC: B29B17/02
Filed: 2000-12-21
Abstract: A polymeric foam powder prepared by a method of preparing foam powder from polymeric foam, the method comprising: a) comminuting the foam in a crusher comprising at least two surfaces moving at different speeds, said comminuting comprising contacting at least a portion of the foam to said at least two surfaces, thereby preparing a crushed product comprising particles; b) quenching the crushed product exiting the crusher with a cooling medium, wherein a mass flow rate of the cooling medium has a value that is at least a certain percentage of a mass flow rate of the crushed product, wherein said value is at least a minimum value suitable for dilute phase pneumatic conveying of the crushed product and c) separating said particles from the crushed product, wherein substantially all of the crushed product exiting the crusher is scraped off said at least two surfaces of said crusher prior to separating said particles from the crushed product.
Patent BR-0206671-B1 (BR)
Inventor: GENSERT HEIKO
IPC: H01R13/52
Filed: 2002-01-18
Abstract: The invention relates to a device for ducting electrical lines through the wall of a fuel tank ( 1 ), whereby a steel support ( 3 ) is materially connected to the wall of the fuel tank ( 1 ). Contacts ( 4 ) are introduced through the support ( 3 ). The contacts ( 4 ) have a sleeving ( 5 ) made from glass or ceramic. A leakage of fuel vapors from the fuel tank ( 1 ) is thus almost completely excluded.
Patent BR-PI0318007-B1 (BR)
Title: aparelho para aplicar um lubrificante ao orifício interno de um tubo, método para aplicar um revestimento de lubrificante sobre as roscas do tubo, e, aplicador de lubrificante
Inventor: JAROSLAV BELIK
IPC: E21B17/00
Filed: 2003-12-19
Abstract: "aparelho para aplicar um lubrificante ao orifício interno de um tubo, método para aplicar um revestimento de lubrificante sobre as roscas do tubo, e, aplicador de lubrificante". métodos e aparelhos para efetuar uma aplicação uniforme de uma quantidade apropriada de pasta de junta às roscas internas de um tubo. em geral, o aparelho preferencial inclui uma fonte de alimentação de pasta de junta e um aplicador centrifugo para aplicar por igual a pasta de junta às roscas internas. o sistema também inclui um sistema dosador para regular a distribuição de pasta de junta administrando um volume consistente de pasta de junta em cada aplicação. as vantagens potenciais das modalidades preferenciais incluem a repetibilidade e consistência de quantidade de pasta de junta sobre as roscas do tubo (por exemplo, espessura).
Patent BR-9902677-B1 (BR)
Inventor: CHARRIN JEAN-JACQUES
IPC: C07B61/00
Filed: 1999-07-09
Abstract: The process enables an upgrading of residues from a mixture of heavy products resulting from an organic reaction such as the preparation of phenol from cumene, the residues being subject to dilaceration before their destruction A new process for the recovery of products contained in a mixture of heavy products, in which a reaction/distillation stage is effected. The desired products are distilled off and the residues subjected to dilaceration prior to their destruction to avoid setting en masse.
Patent CH-706098-B1 (CH)
Title: Racletteofen.
Inventor: LENZ PETER
IPC: F24C15/08
Filed: 2012-02-07
Abstract: Es wird ein für gewerbliche Zwecke besonders gestalteter Racletteofen 1 vorgeschlagen, der ein U-förmiges Gehäuse aufweist, mit geschlossenen Rück- und zwei geschlossenen Seitenwänden 20, 21. Die anderen Seiten des Gehäuses, nämlich die Front-, Deck- und Bodenseite 22–24 verbleiben offen. Die offene Deckseite 23 weist zwei Querstreben 25 auf, an denen pro Heizstrahler 3 eine Längsstrebe 26 gehalten ist. Bevorzugterweise beabstandet von der Rückwand ist pro Heizstrahler ein Haltestab vorgesehen, an dem jeweils eine U-förmige, mindestens annähernd der Länge des Gehäuses entsprechende, trogförmige Auflage 4 einhängbar ist. Auf dieser fluchtend unter dem Heizstrahler 3 verlaufenden Auflage 4 lässt sich jeweils eine Raclettepfanne 5 aufschieben.
Patent CH-703049-B1 (CH)
Inventor: VUILLEMIN RENÉ
IPC: G09F7/18
Filed: 2011-04-07
Abstract: Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Anheben und Absenken von Lasten, insbesondere von an Strassen, Wegen oder Plätzen installierten Geräten (37), zum Beispiel von Verkehrsschildern. Die Vorrichtung weist eine Führungsbahn (13) auf, welche sich von einer Service-Position bis zu einer Betriebs-Position erstreckt. Zusätzlich ist eine Kopplungsstation (63) vorgesehen, welche stationär an der Betriebs-Position angeordnet ist sowie ein Geräteträger (35) für die Lasten, welcher an der Führungsbahn (13) angeordnet und über die Führungsbahn (13) zwischen Betriebs-Position und Service-Position bewegbar ist. Als weitere Komponente ist ein erstes Kopplungsmittel für die Kopplung des Geräteträgers (35) an die Kopplungsstation (63) vorgesehen. Die Vorrichtung weist zusätzlich eine mobile Service-Einheit (15) auf, welche einen Motor trägt und über die Führungsbahn (13) zwischen Betriebs-Position und Service-Position bewegbar ist. Die Service-Einheit (15) ist vorzugsweise an der Führungsbahn (13) anbringbar und von dieser entfernbar ausgebildet, und es ist ein zweites Kopplungsmittel für die Kopplung der mobilen Service-Einheit (15) an den Geräteträger (35) vorgesehen.
Patent CS-239703-B1 (CS)
Inventor: STEPITA MATEJ
IPC: C08L33/10
Filed: 1983-12-03
Abstract: Disperzní hmota s nízkým součinitelem
difúze, obsahující pojivo na bázi vodné disperze
akrylových polymerů, minerální plniva
o zrnitosti do 0,5 mm, tenzidy, odpěnovače,„konzervační
činidla, pigmenty a látky
usnadňující zpracování, vyznačená tím, že
pojivo tvoří vodná disperze reaktivního
etylakrylátového kopolymeru o suéině 40 až
60 % hmotnostních v množství 15 až 30 %
hmotnostních, vztaženo ne disperzní hmotu,
přičemž obsah reaktivního komonomeru, kterým
je monomer s karboxylovými, hydroxylovými
nebo karboxemidovými funkčními skupinami
je 2 až 8 56 hmotnostních, druhým komonomerem
je styren, vinylacetát, vinylhalogenidy
nebo estery kyseliny akrylové v množství
10 až 50 % hmotnostních a třetím, etylakrylét
v množství 10 až 80 % hmotnostních, vše
vztaženo na sušinu polymeru, a disperzní
hmota déle obsahuje prostředek na úpravu
reologických vlastností, kterým je neutralizovaný
vodní roztok kopolymeru esterů kyseliny
akrylové s kyselinou akrylovou a/nebo
metakrylovou a/nebo vodní roztok alkalické
soli akrylového polymeru v množství 0,1 až
5,0 % hmotnostního sušiny, vztaženo na disperzní
hmotu. Disperzní hmota je určena
pro povrchové úpravy hutných i lehčených
podkladů, pro rekonstrukci a sanaci kulturních
památek a historických objektů a pro
obnovu a opravy starých a nestejnoměrných
povrchových úprav.
Patent DE-2643464-B1 (DE)
Title: Video and audio signal carrier disc - controls optical scan with constant depth of grooves independent of disc and protective layer thicknesses
Inventor: SOEDING HORST DIPL-PHYS
IPC: G11B7/24038
Filed: 1976-09-27
Abstract: The disc carrier of video and audio signals for single side or twin-sided optical scanning of the information content is protected by a transparent layer (4). The signal side (3) of the carrier (1) features a beam reflecting surface, and the bearing area (5) of the central hub (2) of the disc is set at a specific distance from the signal surface to ensure correct focussing of the scanning beam. The provision of relatively thin carrier and thicker protective layer can be reversed. The signal surface can be arranged for both sides of the carrier disc.
Patent WO-0196282-B1 (WO)
Title: Procede de production d'amides ou d'esters
Inventor: GROEGER HARALD
IPC: C07K1/08
Filed: 2001-06-12
Abstract: L'invention concerne un procédé de production d'amides ou d'esters à partir d'acides carboxyliques et d'un composé amine ou alcool en présence d'une 1,3,5-triazine et éventuellement en présence d'un solvant organique et d'une amine tertiaire. Selon l'invention, on utilise comme amine tertiaire une diamine (bi)cyclique ou un produit d'addition formé à partir de cette dernière avec le composé triazine, dans un rapport stoechiométrique diamine/triazine compris de préférence entre 0,30 et 1,10 ; le rapport stoechiométrique acide carboxylique/amine ou alcool est compris entre 0,2 et 5,0 et le rapport molaire acide carboxylique/triazine est compris entre 0,5 et 1,5. Les composés acides carboxyliques utilisés sont des acides aminés, par ex. des acides aminés N-protégés et des peptides, tandis que les composés amines utilisés sont des acides aminés (C-protégés) ou un peptide C-protégé. On utilise de préférence comme 1,3,5-triazine la 2-chloro-4,6-diméthoxy-1,3,5-triazine (CDMT) et comme diamine cyclique la N,N'-diméthyl-1,4-pipérazine. Outre ce procédé mis en oeuvre à des températures comprises entre -80 et + 150 °C, en présence d'un solvant organique, l'invention concerne des produits d'addition de diamine (bi)cyclique et de 1,3,5-triazine. Ce procédé permet d'obtenir des rendements supérieurs et des temps de réaction inférieurs à ceux de la technique antérieure. En outre, la quantité produite de déchets de bases d'amines tertiaires est considérablement réduite.
Patent WO-0213130-B1 (WO)
Title: Dispositif de lecture de cartes d'autorisation a code barres
Inventor: STOCKHAMMER RUDOLF
IPC: G06K19/06
Filed: 2001-07-26
Abstract: L'invention concerne un dispositif de lecture de cartes d'autorisation (2) à code barres (3) comprenant un boîtier (5) muni d'une fente d'introduction (6) permettant d'introduire la carte (2), et au moins une tête de lecture (10, 11) dans le boîtier, destinée à détecter le code barres (4) dans une ligne (12, 13), perpendiculairement au sens d'introduction (14) de la carte (2). Le logement (8) ménagé dans le boîtier (5) est d'une longueur telle que la carte (2) peut être introduite au-delà d'une parcours (d) qui est supérieur à la distance (c') entre le bord avant (20) de la carte (2) et l'extrémité du champ code barres (3) opposée au bord avant. De cette façon, des cartes (2) de longueurs différentes (a) et de positions différentes (c') du champ code barres (3) peuvent être lues.
Patent ES-2050573-B1 (ES)
Title: Bandeja de carton apilable.
Inventor: PERIS SEGRELLES VICTOR
IPC: B65D85/30
Filed: 1991-10-11
Granted: 1996-02-01
Abstract: UNA BANDEJA DE CARTON APILABLE, CONSTRUIDA A PARTIR DE UN DESARROLLO LAMINAR DE DICHO MATERIAL EN EL QUE HA SIDO CONFIGURADO UN FONDO Y UNAS PAREDES QUE CONFLUYEN FORMANDO ESQUINAS VERTICALES, PRESENTA ADHERIDOS, MEDIANTE UN PEGAMENTO ADECUADO, Y EN PORCIONES DEFINIDAS DE DICHAS ESQUINAS DESPLAZADAS VERTICALMENTE RESPECTO DE LA BOCA DE CARGA O DEL FONDO DE LA BANDEJA, PILARES DE SUSTENTACION Y GUIA QUE FACILITAN QUE LA BASE DE UNA BANDEJA SITUADA INMEDIATAMENTE ENCIMA DE OTRA SEA POSICIONADA Y ENCLAVADA, DE MANERA SIMULTANEA EN UN APILAMIENTO. CON LA INCORPORACION DE LOS PILARES A LA BANDEJA SE CONSIGUE QUE LA COLUMNA DEL APILAMIENTO SE MUESTRE COMPACTA Y CONSISTENTE EN LAS MANIPULACIONES A QUE PUEDA SER SOMETIDA.
Patent ES-2066642-B1 (ES)
Title: Mecanismo para la compresion y/o expansion de fluidos mediante sistema de cigueñal, bulon y piston de doble efecto.
Inventor: BADAS CODEJON NESTOR
IPC: F15B15/06
Filed: 1992-03-13
Granted: 1996-10-01
Abstract: MECANISMO PARA LA COMPRESION Y/O EXPANSION DE FLUIDOS MEDIANTE SISTEMA DE CIGUEÑAL, BULON Y PISTON DE DOBLE EFECTO. LA INVENCION CONSISTE EN UN CONJUNTO FORMADO POR UN CIGUEÑAL Y UN PISTON DE DOBLE EFECTO, INTERCONECTADOS POR MEDIO DE UN BULON QUE SE DESLIZA A LO LARGO DE UN TALADRO PASANTE QUE ATRAVIESA LAS PAREDES DEL PISTON. EL MOVIMIENTO SE TRANSMITE DEL CIGUEÑAL AL PISTON, O A LA INVERSA, POR MEDIO DEL BULON. EL MECANISMO ES MAS SIMPLE QUE LOS CONOCIDOS EN EL ACTUAL ESTADO DE LA TECNICA, SUSTITUYE VENTAJOSAMENTE A LOS SISTEMAS ACTUALES DE CONEXION CIGUEÑAL-PISTON O PISTON-CIGUEÑAL, REDUCE LA NECESIDAD DE ESPACIO Y PERMITE UN RENDIMIENTO SUPERIOR GRACIAS A LA DOBLE ACCION DEL PISTON. EL MECANISMO ES DE APLICACION DIRECTA A LOS MOTORES DE EXPLOSION Y COMPRESORES DE FLUIDOS.
Patent ES-2043557-B1 (ES)
Title: Procedimiento de obtencion de nuevos derivados de la 4-bencilpiperidina.
Inventor: FOGUET AMBROS RAFAEL
IPC: C07D211/14
Filed: 1992-06-04
Granted: 1994-07-01
Abstract: PROCEDIMIENTO DE OBTENCION DE NUEVOS DERIVADOS DE LA 4-BENCILPIPERIDINA. CONSISTE EN LA ALQUILACION DE LAS 4-BENCILPIPERIDINAS (II) CON LOS 3-HALOPROPIL-DERIVADOS DE FORMULA GENERAL (IV), DONDE Y ES HALOGENO Y R ES HIDROGENO, P-FLUOROFENOXI, BIS(P-FLUOROFENIL)-METIL O 8-AZAESPIRO-4,5-DECANO-7,9-DIONA-8-IL-METIL, O BIEN CON 2-(3-CLOROPROPIL)-2-(P-FLUOROFENIL)-1,3-DIOXOLANO (V), OBTENIENDOSE ASI LOS PRODUCTOS FINALES (I) DONDE R TIENE IGUAL SIGNIFICADO QUE EN (IV), O BIEN LOS ETILEN CETALES INTERMEDIOS DE FORMULA GENERAL (III). ESTOS ULTIMOS SE HIDROLIZAN A LOS PRODUCTOS FINALES (I) DONDE R ES P-FLUOROBENZOIL, PUDIENDOSE REDUCIR A SU VEZ A LOS OTROS PRODUCTOS FINALES (I) DONDE R ES HIDROXI-P-FLUOROBENCIL. EN TODO EL ESQUEMA, X SIGNIFICA HIDROGENO O FLUOR. LOS COMPUESTOS DE FORMULA GENERAL (I) TIENEN APLICACION FARMACOLOGICA POR SU ACTIVIDAD SOBRE EL SISTEMA NERVIOSO CENTRAL. **FORMULA**