baber/WOPTO huggingface dataset:
Patent CN-201394809-Y (CN)
Inventor: HAO WEN
IPC: B25B23/00
Filed: 2009-04-15
Granted: 2010-02-03
Abstract: 一种螺钉定位器，包括外套、内衬、滑套、抱爪定位套、抱爪、第一弹簧、第二弹簧、锁紧螺母和挡环。其中的抱爪可在抱爪定位套和滑套的共同作用下张开或收拢。本实用新型的螺钉定位器在使用时，能紧紧地将螺钉的杆子抓住，使螺钉能笔直的固定在螺丝批上，从而实现单手拧螺丝，可提高操作速度和工作效率，且安全可靠。
Patent CN-201430825-Y (CN)
Inventor: FUZHONG LI
IPC: A01G31/06
Filed: 2009-07-06
Granted: 2010-03-31
Abstract: 本实用新型公开了一种圆拱形立体种植板的喷雾式立体栽培系统，包括营养液气雾式供给系统和圆拱形的立体种植体。所述营养液气雾式供给系统包括喷头支架和多个喷头，所述喷头的连接管均依附在所述喷头支架上；营养液池，用于存储培养植物的营养液；高压水泵，对营养液进行加高压处理；所述立体种植体上设置有彼此间隔设置的种植孔，所述种植孔上设置有供种子或者种苗附着的附着体。本实用新型提供的圆拱形喷雾式立体栽培系统，以简单的结构和低廉的成本实现了气生根。
Patent CN-201292760-Y (CN)
Title: 多节伸缩式绝缘梯
Inventor: CHUNDONG WANG
IPC: E06C7/08
Filed: 2009-01-06
Granted: 2009-08-19
Abstract: 本实用新型公开了一种电力行业检修施工用的多节伸缩式绝缘梯，由自下而上相互滑动配合的空心梯脚与多段空心梯节构成，其相互联接处设有带扳手的锁定装置，最底处的扳手反装，只有在人为用力向下拉动扳手时，底处梯节才会收缩，可避免安全事故的发生；另外于梯节的梯杆底端固定有弹性胶堵，以增大梯杆间相对滑动时的摩擦力，大大减缓梯节自由回缩时的降速，避免底部劈裂，也可避免拉伸时速度过快导致梯杆滑脱。该梯伸、缩平稳、方便，使用安全，大大减轻梯子损毁程度，延长梯子的使用寿命，可用于电力行业检修施工时的登高作业。
Patent CN-201361410-Y (CN)
Title: 一种可折叠式健身设备
Inventor: YONGQIANG LIU
IPC: A63B26/00
Filed: 2009-02-16
Granted: 2009-12-16
Abstract: 本实用新型涉及一种健身设备，尤其是一种可折叠式健身设备。属于健身器材的技术领域。本实用新型的一种可折叠式健身设备，该健身设备包括背部支撑部(1)、脚踏板(2)、扶手(3)和支撑架(4)，其中，横杆(6)连接支撑架(4)，所述的横杆(6)中间部位为可折叠性铰接。本实用新型的有益效果是，可以在使用者轻松健身的同时，有效的保证了使用者的安全，而且方便了使用者在使用健身器材前后对其摆放、移动。增加的功能部分简单易操作，不影响整体美观。
Patent CN-201382233-Y (CN)
Inventor: WEIFA XUE
IPC: F16L51/02
Filed: 2009-03-20
Granted: 2010-01-13
Abstract: 全外压压力平衡式波纹补偿器属于管路用的膨胀补偿装置领域，主要解决增大补偿能力并获得理想刚度问题；左接管(1)和右接管(2)之间装有带密封连接头，而且几何参数与工作波纹管(10)一样的平衡波纹管(9)；本体腔由外护筒(7)、右端环(6)和左端环(5)组成，左端环(5)一侧为活动端；工作波纹管(10)位于本体腔内，并套在左接管(1)上，其左端与左端环(5)连接在一起，其右端与焊在左接管(1)上的导向环(13)连接在一起；在平衡波纹管(9)的两端旁并与其连接在一起的接管上分别具有左旁通孔(15)和右旁通孔(16)；不会发生柱状失稳，能通过增加波数使其整体刚度达到理想值，自导向功能好，并对波纹管有保护作用，不仅能压力推力自平衡，而且补偿能力大，尤其是具有满足高温介质而引起的大膨胀量的能力。
Patent CN-201364310-Y (CN)
Title: Pdc岩屑图像自动采集仪
Inventor: QINGLONG ZHAI
IPC: G01N21/84
Filed: 2009-03-03
Granted: 2009-12-16
Abstract: 一种适合录井现场使用的针对大量PDC岩屑的高分辨率、自动控制、智能化的PDC岩屑图像自动采集仪由图像拍摄系统和样品输运系统构成。图像拍摄系统包括：数字摄像机、散热片、微距镜头、白光LED条形光源四部分；样品输运系统包括：漏斗、吸尘机、传送带、驱动电机、收料斗；其特征在于：图像拍摄系统的数字摄像机安装在与升降杆相连的滑块上，升降杆通过电机带动来产生上下运动，使摄像机实现准确对焦。散热片安装在数字摄像机的外表面，使数字摄像机保持在正常工作温度范围以内；并配有微距镜头，使岩屑图像可实现高分辨率采集，是一种自动的，既能保证岩屑图像采集的高分辨率，又能提高大量岩屑采集速度的岩屑图像自动采集仪。
Patent GE-U20151863-Y (GE)
Title: Form panel
Inventor: OVAKIMOV ERIK
IPC: E04G9/00
Filed: 2014-04-29
Abstract: There is represented form panel 1, which is plastic rectangular parallelepiped shaped hollow case 2. On case upper surface the plug-like projections 3 are executed to connect panels together, and for strengthen the connection, in panel cavity, corresponding form height, and outgoing from lower part of case upper surface, the plug-like projections 4; partitions 5 connecting thereto couple of longitudinal parallel sides; and the projections 6 outgoing from case parallel sides are executed, as well.
Patent ES-493185-A0 (ES)
IPC: A01D34/73
Filed: 1980-07-07
Abstract: 1. Device for mounting a mowing knife (24) on a knife carrier (1) rotatable about a central axis, whereby during rotation of the knife carrier (1) each mowing knife (24) with the end (25) carrying the cutting edges extends beyond the outer edge (4) thereof and with the opposite end (23) being freely rotatable with respect to the knife carrier about a pin (20) at least substantially parallel to the axis of rotating of the knife carrier (1), whilst the head end (21, 22) of the pin (20) extending upwardly through the knife carrier (1) and above the upper surface thereof has been fixed to the end (18) of a leaf spring said end being movable up and down and the opposite end being fixed to the knife carrier (1) characterized in that the end (23) of the mowing knife is embraced by a hollow profile (10), whereby through the mowing knife (24) and the hollow profile (10) there extends in holes being in line with each other a pin about which they are pivotable in common.
Patent ES-508421-A0 (ES)
IPC: C07C/
Filed: 1981-12-30
Abstract: Process for manufacturing anhydrous 2-hydroxy-3-chlorophropane trialkylammonium chloride by conversion of trialkylammonium chloride with epichlorohydrin by forming an aqueous solution of trialkylammonium chloride in an organic solvent inert to epichlorohydrin, the solvent forming an azeotrope with ater which boils at temperatures up to the normal boiling point of the solvent, distilling off the azeotrope to form a suspension of trialkylammonium chloride in the solvent reaction product and reacting the reaction product in the solvent with epuichlorohydrin at a temperature of 20 DEG  to 120 DEG  C.
Patent ES-510388-A0 (ES)
IPC: B41F31/04
Filed: 1982-03-12
Abstract: A printing press, in particular an offset printing press comprising a plurality of individually operable setting motors, in particular for adjusting the inkfilm density profile, each setting motor being connected to a pick-up generating electric signals characteristic of the actual position of the setting motor at any given moment (actual values) comprises an electronic comparator arrangement (35, 44) which is supplied with the actual values and, in addition, desired values for the position of the individual setting motors (9) and which repeatedly scans the actual values sequentially in a cyclical time sequence and compares each actual value with the related desired value to form a setting signal for operation of the associated setting motor in the forward or reverse direction when a given positive or negative minimum deviation is exceeded. The setting signals are fed to a switching arrangement (52) designed to cause the respective setting motor to be stopped or driven at a pre-determined speed in the sense of rotation determined by the last setting signal until the next signal is received. Thus it is rendered possible to easily control a plurality of setting motors.
Patent ES-514169-A0 (ES)
IPC: C07D473/08
Filed: 1982-07-20
Abstract: New derivatives of theophylline having the formula   <IMAGE> (I)  in which R denotes hydrogen or OH, n the numbers 0 or 1, X either >CH- or >N-, Y either -O- or -CO- and R a five membered or six membered aryl ring or hetero-aryl ring, that is substituted in given cases with halogen, short chain alkyl groups, alkoxy groups or halogen-alkyl, and exhibit in addition to other properties, histamine-, serotinine- bradykynine- antagonistic, anti-anaphylactic and -adrenergic stimulating effects.
Patent ES-519722-A0 (ES)
IPC: C07D213/79
Filed: 1983-02-11
Abstract: Compounds of the formula   <IMAGE>   wherein W and X, which may be identical to or different from each other, are each hydrogen, fluorine, chlorine, bromine, iodine, nitro, alkyl of 1 to 4 carbon atoms, fluoro-substituted alkyl of 1 to 4 carbon atoms or chloro-substituted alkyl of 1 to 4 carbon atoms; Y is hydrogen, fluorine, chlorine, bromine, alkyl of 1 to 4 carbon atoms, fluoro-substituted alkyl of 1 to 4 carbon atoms or chloro-substituted alkyl of 1 to 4 carbon atoms; Z is fluorine, chlorine, bromine, alkyl of 1 to 4 carbon atoms, fluoro-substituted alkyl of 1 to 4 carbon atoms, chloro-substituted alkyl of 1 to 4 carbon atoms, -COOH or -COO-(alkyl of 1 to 4 carbon atoms); and n is 0 or 1; and, when Z is COOH, salts thereof, especially their alkali metal salts. The compunds as well as the salts are useful as selective herbicides.
Patent ES-540872-A0 (ES)
IPC: B65B9/04
Filed: 1985-03-01
Abstract: A continuous molding machine (10) for forming two chains (55) of soil plugs (50) for use in germinating seeds or otherwise growing plants. A continuous sheet of paper (22) is corrugated to conform to a series of mold elements (14) and a reaction mixture (32) of polymerizing agent and soil slurry is added over the paper to conform to the mold element shape. Another sheet of paper (38) is added over the top of the mixture (32) and the entire assembly is then passed under a series of pressure belts (42, 44, 46) during which time the mixture (32) is cured. The chain of soil plugs (50) which emerges from the pressure belts (42, 44, 46) is encased on both sides by paper (22, 38) and may be cut to provide a pair of separate soil plug chains (55).
Patent ES-543645-A0 (ES)
IPC: H04Q11/04
Filed: 1985-05-30
Abstract: Multiple memory loading system with a plurality of intercoupled modules (TCEA/B; TCEL/n) including memories and processing means and at least one (TCEA/B) of which is able to transmit each (GLS1) of a plurality of data packets (GLS1/m) to the memories of a number of modules wherein said data packet may then be stored. The transmission of each (GLS1) of said data packets (GLS1/m) from said one module (TCEA/B) only occurs directly to the memories of a number of predetermined modules (TCE1, 14, 27, 40) of an initial set (TCE1/50) and indirectly from said memories to memories of other modules.
Patent ES-545724-A0 (ES)
IPC: B29C39/20
Filed: 1985-07-30
Abstract: A composite ribbon [12] suitable for winding into coils, comprising an acrylate resin film destined to be used as an intermediate layer in safety glass panels, interposed between two thin protective films [P<sub>1</sub>,P<sub>2</sub>] is produced by means of a continuous process of polymerization induced by light radiation, using the two protective films themselves as a polymerization cell.
Patent ES-546740-A0 (ES)
IPC: F01P5/12
Filed: 1985-09-05
Abstract: 1. Engine block (11) with a pump chamber (12) in which is disposed a pump with a pump neck (8) rotatably about a pump chamber axis (22), wherein the pump neck (8) is arranged eccentrically relative to the pump chamber axis (22) and over the pump neck (8) is provided a cover (2) with a cover opening (26) for the pump neck (8), characterised in that in the cover opening (26) is disposed a base plate (3) with a neck opening (17) for the pump neck (8), which is rotatable in the same eccentric position relative to the pump chamber axis (22) as the pump neck (8), about the latter axis.
Patent ES-556682-A0 (ES)
IPC: B31B1/90
Filed: 1986-06-25
Abstract: A method and apparatus are provided for securing a plastic fastening profile, such as is used on reclosable plastic containers, to a traveling plastic film web. A freshly extruded hot fastener profile (30) is guided into convergence with a preformed traveling film web (10). The profile and web are joined together in an area (32) in which the web is insulated. Only the heat from the fastener profile is used to fuse the surface of the web and secure the profile to the web.
Patent FI-831199-A0 (FI)
Inventor: STILLINGS MICHAEL ROBIN
IPC: C07D405/04
Filed: 1983-04-11
Abstract: Imidazoline derivatives of the formulahaving the RS or S configuration wherein R<sup>1</sup> is alkyl C<sub>1-4</sub>, allyl, benzyl, phenethyl or hydroxyalkyl C<sub>2-4</sub>, and their non-toxic salts.Processes for their preparation and pharmaceutical compositions thereof. The compounds exhibit presynaptic a<sub>2</sub>-adrenoreceptor antagonist activity.
Patent FI-831606-A0 (FI)
Inventor: BARSK JAAKKO OLAVI
IPC: B28B1/08
Filed: 1983-05-09
Abstract: Method and slide-casting machine for the casting of hollow slabs out of concrete by slidecasting. Concrete mix is extruded onto a base (18) preferably by means of a conical screw spiral (2). Thereinafter the mix is compacted by moving a cavity mandrel (3) fitted after the screw spiral. The end of the cavity mandrel (3) is moved along a path of movement of desired shape. The final end of the mandrel may be attached to the machine by means of a ball joint.
Patent FI-832131-A0 (FI)
Inventor: PERSSON AOKE R
IPC: B62D27/06
Filed: 1983-06-14
Abstract: A quick socket and a strut, especially for transport vehicles, and comprising a strut and a socket fitting thereto and comprising a carrier portion (3) and a locking portion (4), in which the carrier portion (3) is adapted to receive the strut with some play, and in which the locking portion (4) is formed with one or more key means (9, 10), which are resiliently biassed in the direction upwards-inwards towards the center of the carrier portion (3) whereby the key means press the strut to a play-free contact with the carrier portion (3). The key means (9, 10) is/are slidable in obliquely extending slots (11) in the sides of the locking portion. For positively securing the strut against un-intentional removal from the quick socket, the quick socket has a bayonet like locking groove (6, 7), which cooperates with a projecting shoulder of the strut.
Patent FI-832274-A0 (FI)
Inventor: MOMMERS WILHELMUS MARIE ANTONI
IPC: A44B15/00
Filed: 1983-06-21
Abstract: The invention relates to a key keeper comprising a key-retaining loop 3 with an opening 17 for the receipt of keys, said loop is connected to a loop holder 2 being slideably mounted within a housing 1. The loop is being closed if the holder is in its slid-in position, whereas the loop can be opened if the holder is partially slid out of the housing. Means are further provided for locking the holder in its slid-in position. 
<??>The means for locking the holder consist of a wheel 4, which is rotatably mounted in the housing, the rotation of which can be prevented by a snap connection 11. By rotating the wheel 4, the loop holder is displaced in or out of the housing 1.
Patent FI-842739-A0 (FI)
Inventor: DE CASTIGLIONE ROBERTO
IPC: A23K1/16
Filed: 1984-07-09
Abstract: There are provided peptides of the formula X-Val-Pro-Leu-Gly-Trp-A-Y wherein X represents a hydrogen atom or a terminal nitrogen protecting group, A represents a neutral L- alpha -amino acid residue and Y represents OH, NH2 or a group of the formula OR, NHR, NR2 or NHNHR' wherein R represents a C1-C11 alkyl group optionally substituted, a C7-C14 aralkyl or a phenyl group and R' represents H, any of the groups which R may represent or a protecting group. Pharmaceutically or veterinarily acceptable salt of these peptides are also provided, as are pharmaceutical or veterinary compositions containing peptides or their salts. The peptides which can be prepared by classical solution synthesis, display useful activity on the central nervous system and are active as growth promotors.
Patent FI-842910-A0 (FI)
Inventor: KUEHNE REINHART
IPC: C03B37/025
Filed: 1984-07-19
Abstract: The present invention relates to a method for producing a directed aerosol stream by a flame free reaction which is conducted while enveloped within an aerosol free gas and/or vapor stream. It is particularly suitable for use in coating systems, as it permits economical coating without so-called wall deposits.
Patent FI-853362-A0 (FI)
Inventor: GEOFFROY-DECHAUME VINCENT
IPC: B31F1/28
Filed: 1985-09-02
Abstract: PCT No. PCT/CH85/00001 Sec. 371 Date Sep. 9, 1985 Sec. 102(e) Date Sep. 9, 1985 PCT Filed Jan. 10, 1985 PCT Pub. No. WO85/03030 PCT Pub. Date Jul. 18, 1985.The invention is primarily concerned with a sandwich material (55) made of sheets based on paper. This material is substantially comprised of a sheet (42) of corrugated paper (44) forming one or several layers. An intermediate paper sheet (31) is bonded to the corrugations of the sheet 42. A film (29) of a thermoplastic compound adheres physically as the result of an extrusion to the outer side of the intermediate paper sheet (31). The process for manufacturing this material consists firstly in extruding a film (29) of thermoplastic compound on the intermediate paper sheet (31), and then in bonding the web (27) of protective layer thus obtained on the corrugations of the sheet of corrugated paper (42). The invention is remarkable in that these operations are carried out on a standard machine for manufacturing corrugated paperboard. However, on the one hand an adhesive setting instantly at room temperature is used, and on the other hand the various heating elements used to bring about the setting of adhesives polymerizing through an endothermic reaction are kept switched off. The invention is particularly useful for making furniture or wall panels.
Patent FI-854328-A0 (FI)
Inventor: JACOBSON WALTER
IPC: G01N33/96
Filed: 1985-11-04
Abstract: A blood gas-hemoglobin analysis control which simulates whole human blood characteristics comprising a buffered suspension medium containing erythrocytes which have been stabilized with an imidoester protein cross-linking agent while being contacted with a gas consisting of pure oxygen or pure carbon monoxide.
Patent FI-855014-A0 (FI)
Inventor: SCHWENGERS DIETER
IPC: C12P19/02
Filed: 1985-12-17
Abstract: Sweetening agents for human and animal foods in the solid or liquid states contain at least 50% by weight of leucrose. They may additionally contain one or more sweetening agents selected from the group consisting of artificial sweeteners and sugar surrogates. The leucrose is produced by reaction of saccharose with  alpha -(1-6)-glucosyl transferase in the presence of at least 100 mmoles of fructose per 1,000 I.U. of enzyme, and at least a partial separation of the dextrans and iso-malto-oligosaccharides. Leucrose may be prepared by this method having a purity of at least 98% and may be used as a non-cariogenic, metabolically fully utilizable sweetening agent with good compatibility which is also suitable for diabetics.
Patent FI-860153-A0 (FI)
Inventor: JANSZ HENDRIK SIMONS
IPC: A61K38/00
Filed: 1986-01-13
Abstract: Described are peptides that have, as partial sequence of a larger peptide, or exclusively, the amino acid sequence of the formula I <IMAGE>  (I)  ArgSerGlyGlyMetValLysSerAsnPheValProThrAsnValGlySer- +TR LysAlaPhe-  in which the cysteine residues can form intra- or inter-molecular disulphide bridges, and derivatives thereof having an amidated terminal carboxy group and/or an acylated terminal amino group, and their salts, DNA sequences that code for the mentioned peptides, micro-organisms that contain these DNA sequences, processes for the manufacture thereof, pharmaceutical preparations that contain the mentioned peptides in the form of their amides, and the use of these peptide-amides for the treatment of coronary circulation disorders and bone metabolism disorders.
Patent FI-864857-A0 (FI)
Inventor: ESKELINEN PAAVO
IPC: A61B5/308
Filed: 1986-11-28
Abstract: PCT No. PCT/FI87/00158 Sec. 371 Date Jul. 20, 1989 Sec. 102(e) Date Jul. 20, 1989 PCT Filed Nov. 26, 1987 PCT Pub. No. WO88/04114 PCT Pub. Date Jun. 2, 1988.The invention relates to a signal-shaping network comprising a differential amplifier (G) having an output and an inverting (A) and a non-inverting (B) input between which a signal source (S) is connected. When a differential amplifier is used particularly for the measuring of very weak biosignals, interference signals may easily make the measuring completely impossible. In the signal-shaping network according to the invention, interferences have been eliminated in such a way that an integrating feedback circuit (1a; 1b) is connected between the output and one input of the differential amplifier (G) and/or a derivative feedback circuit (2a) is connected between the output and the other input of the differential amplifier. In this way an adaptive differential amplifier is achieved which attenuates slow interference signals and/or rapid interference signals.
Patent FI-875536-A0 (FI)
Inventor: HARRISON ROGER
IPC: H04N7/08
Filed: 1987-12-16
Abstract: In a television broadcast and reception system for the transmission of PAL signals accompanied by an additional stereo signal for enhanced audio reception the television received has equipment to indicate, whether or not the input signal is valid by utilizing two decoders which decode the presence of a FAW (Frame Alignment Word) together with a 1, and a FAW together with an O. The output from these detectors is applied to threshold circuits which decide the "good to bad" rate of "FAW and C" bit detections. A mark/space detector is formed of two counters, the final counter of which counts up if the input to mark space is above a critical value. For a correct FAW lock, both counters count up and the circuit gives a valid output for a correct input sequence. This equipment, together with a C0 detector and timer circuit forms a locking arrangement immune to substantially all false lock sequences which might occur.
Patent FI-884494-A0 (FI)
Inventor: CASSELLS ALAN CONDON
IPC: B65D85/52
Filed: 1988-09-30
Abstract: A package (1) for the production and/or storage of plants, comprising a sealed container (2) for the plants in which at least a portion of the container is a membrane assembly of at least two selectively permeable membrane layers, an innermost membrane (5) having relatively high permeability to both gases and water vapor and an outermost membrane (6) having relatively high permeability to gases but being substantially impermeable to water vapor, said outer membrane layer (6) being strippable from the package leaving the innermost membrane (5) intact.
Patent FI-894793-A0 (FI)
Inventor: MONGOIN JACQUES
IPC: C09K23/52
Filed: 1989-10-09
Abstract: Compatibility, dispersing and milling for pigmentary aqueous suspensions formulated from a mixture of inorganic pigments, at least one of which is hydrated calcium sulphate, with a view to destroying the viscosity-producing effect caused by the presence of the said sulphate, characterised in that the said agent is a copolymer of general formula: 
<IMAGE>
 symbolised by the formula: (-A)-K(-B)-L(-C)-M in which the ethylenic monomer (B) contains a phosphated or phosphonated functional group, the monomer (A) is an ethylenic monomer containing a carboxylic functional group, and the monomer (C) is an ethylenic monomer of the ester type or substitutes, and in which L takes a value of between 5 and 95 parts by weight with K + L + M = 100 parts by weight, it being possible for K and M separately to take the value 0. 
<??>The agent according to the invention makes it possible to prepare refined polypigmentary aqueous suspensions with a solids content equal to at least 65% by weight, advantageously employed in the paper, paint and plastics fields.
Patent FI-901556-A0 (FI)
Inventor: HORSTMANN MICHAEL
IPC: A61K31/445
Filed: 1990-03-28
Abstract: A transdermal therapeutic system exhibiting layered structure consists of a backing layer which is impermeable to active substances, a matrix having water-insoluble basic material and islands (inclusions) divided therein, and a layer controlling the access of cutaneous liquid by means of which the matrix is activatable. Process for the production are described.
Patent FI-912475-A0 (FI)
Inventor: BUSSINK JAN
IPC: C08K5/101
Filed: 1991-05-21
Abstract: The invention provides a composition containing a polymer of unsaturated hydrocarbon and a C1-4 alkyl or hydroxyalkyl starch ether having a degree of substitution of at least 0.25 for improving the biodegradability and one or more esters of C1-4 alcohols and C6-20 carboxylic acids as a compatibilizing agent.
Patent FI-912998-A0 (FI)
Inventor: MARESCAUX CHRISTIAN
IPC: A61P25/08
Filed: 1991-06-19
Abstract: Compounds having GABAB-antagonistic properties, for example those of formula I    <IMAGE>  (I)  wherein one of the radicals R1, R2 and R3 is hydrogen or an aliphatic, cycloaliphatic, araliphatic or aromatic radical, another is hydrogen or, in the case of R1 or R2, hydroxy or, in the case of R1, halogen or, in the case of R2 together with R2', oxo, and the remaining radical is hydrogen, R1' is hydrogen or halogen, R2' is hydrogen, hydroxy or, together with R2, is oxo, R4 and R5 are hydrogen or R4 is an araliphatic or heteroarylaliphatic radical and R5 is hydrogen or an aliphatic radical, and R is an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, araliphatic, heteroarylaliphatic or aromatic radical having at least 2 carbon atoms or, when R1 is hydrogen or hydroxy, R2 is an aromatic radical and R1', R2' and R3 are hydrogen, R is methyl, and their pharmaceutically acceptable salts, can be used as active ingredients in medicaments for the treatment of epilepsies of the "petit mal"  type. The invention relates also to novel compounds of formula I and processes for the preparation thereof.