baber/WOPTO huggingface dataset:
Patent GB-2607938-A (GB)
Title: Cable handling system for longwall mining machines
Inventor: SIDDARTHA SAIKIA
IPC: H02G3/04
Filed: 2021-06-17
Abstract: A method of operating a cable handling system of a longwall mining machine having a shearer movable along a pan line to mine material along a mine face, the cable handling system including: i) a service line 202 configured to carry one or more supply lines to the shearer for facilitating shearer operation, ii) a plurality of interconnected trays 200 to accommodate the service line, iii) a plurality of sensor nodes 203 distributed along a length of the service line, and iv) a plurality of transceivers distributed along a length of the pan line, the method comprising: a) sensing orientation, acceleration and/or position data of the service line using the plurality of sensor nodes, b) using the plurality of transceivers to receive the orientation, acceleration and/or position data from the plurality of sensor nodes and to transmit the orientation, acceleration and/or position data to a controller, and c) detecting, by the controller, an actual or imminent failure mode of the service line using analysis of the orientation, acceleration and/or position data from the plurality of the sensor nodes.
Patent GB-2596954-A (GB)
Title: System and method for switching device primary/secondary roles for use in wireless communications
Inventor: ZHIYONG XU
IPC: H04W4/80
Filed: 2021-02-05
Abstract: The present invention relates to the technical field of Bluetooth headphone communication technology, and specifically relates to a system and a method for switching device primary/secondary roles for use in wireless communications. The method comprises: S100, establishing a monitoring link for communication between a primary device and a host device; and S200, and when role switching of the primary device and a secondary device is triggered, either the primary device or the secondary device sending a role switching request by means of the monitoring link, a time point for role switching being set in the role switching request, and the other device, by means of the monitoring link, replying with a request reception acknowledgment packet for reception of the role switching request. The system comprises a primary device, a secondary device, and a host device, the primary device comprising a primary processing module, and the secondary device comprising a secondary processing module. In the present invention, role switching between a primary device and a secondary device allows energy consumption in the two devices to be kept even, increasing the usage time of the devices and improving user experience.
Patent GB-2612357-A (GB)
Title: Testing device, method, and software for testing an automotive controller
Inventor: PRZEMYSLAW CZACHOWSKI
IPC: G01R31/28
Filed: 2021-10-29
Abstract: A testing device 1 for an automotive controller, includes a plurality of Device Under Test (DUT) lines 3 for connection to respective DUT lines in the automotive controller, and first and second multiplexers 6a, 6b for selecting individual DUT lines. First and second measurement modules 7a, 7b are connected to the multiplexers for measuring signal characteristics on the selected DUT lines. An interconnect circuit 14 selectively connects stimulation modules 11, 12, 13 to the measurement modules for stimulating electrical signals on the selected DUT lines. A controller 18 controls the switching of the multiplexers and the interconnect circuit and receives the measured signal characteristics from the first and second measurement modules for testing the respective DUT lines in the automotive controller. The test device may be an IO card for a computer. There may be a plurality of channel switches for connecting the DUT lines to a power source.
Patent GB-2616448-A (GB)
Title: Liquid contamination detection
Inventor: RICHARD THOMAS CALHOUN BRIDGES
IPC: B41J2/02
Filed: 2022-03-09
Abstract: An inkjet printer 10 has a sensor 28, 30 32 for measuring an electrical characteristic of a liquid in a component of the printer, and a controller 26 operable to detect contamination of a liquid in a component of the printer from a measured value of the electrical characteristic. The inkjet printer may be a continuous inkjet printer and the electrical characteristic may be a resistance. The sensor may be for measuring an electrical characteristic of solvent received in a gutter or a solvent recovery path connected to the gutter. There is also disclosed a method of detecting liquid contamination of a liquid in a component of a printer from a measured value of an electrical characteristic. The sensor may be a resistive ink reservoir sensor 28, a resistive solvent reservoir sensor 30 or a resistive gutter sensor 32.
Patent GB-2607177-A (GB)
Title: Aircraft gun-blast diffusers, plugs for aircraft gun-blast diffusers, and methods of making such plugs
Inventor: GARRETT B PETERS
IPC: F41A35/04
Filed: 2022-03-25
Abstract: A plug 100 insertable into a blast-tube exit cavity 202 of a gun-blast diffuser 200 comprises a front surface 112, a rear surface (114, Figure 4), and a side surface 116 extending between the front surface and the rear surface. A body (102) comprises a polyurethane foam, and a substrate (104) coupled to the body comprises a conductive nonwoven fabric impregnated with a polyurethane matrix. The plug front surface is formed by the substrate. The plug rear surface is formed by the body. The plug side surface is formed by the substrate and the body. A method of manufacture and a gun-blast diffuser are also claimed. The fabric may comprise carbon fibres and be embedded within the polyurethane matrix. The polyurethane foam may be closed-cell. A protrusion (106) may extend from the side surface. A portion of the side surface may be bonded to a portion of the blast tube with a sealant between. The substrate may be secondarily bonded to the body. The method step of impregnating the fabric may comprise placing the conductive woven fabric on a preparation surface and coating the fabric with polyurethane matrix such that it is embedded.
Patent GB-2614934-A (GB)
Title: Self-cleaning optical probe
Inventor: RAYMOND ACHESON
IPC: G01N21/15
Filed: 2022-05-01
Abstract: An optical probe comprising an elongate hollow probe body 14, an optical window 10 mounted at a distal end of said probe body for transmitting light therethrough, an ultrasonic transducer 18 mounted within said probe body for applying ultrasonic vibrations to said optical window for cleaning said optical window, and one or more light guides 28 located within said probe body for transmitting/receiving light through said optical window to/from a measurement region, wherein said ultrasonic transducer is located within said distal end 36 of the probe body adjacent said optical window to transmit ultrasonic vibrations directly from said ultrasonic transducer to said window. The probe is for oil in water fluorescence analysis where a light source causes a target substance to fluoresce which is measured to determine oil content. The ultrasonic transducer may be located within the probe body via a mounting flange 34, 38 extending between the body of the transducer and an inner wall of the probe body, the flange being located at a zero point of the transducer. The optical window may be mounted on a distal end within an opening 12 of the probe body and may have a resilient seal 16 provided between the window and said opening.
Patent GB-2606935-A (GB)
Title: Charged particle detection for spectroscopic techniques
Inventor: BRYAN BARNARD
IPC: H01J49/02
Filed: 2019-11-07
Abstract: An X-ray photoelectron spectrometer comprises; a spectroscopic analyser; and apparatus for detection of charged particles (photoelectrons) from the analyser comprising charged particle optics 18 and a detector 16 comprising an array of pixels, wherein the optics 18 is configured to accelerate the photoelectrons from the analyser 114 towards the detector 16. The optics 18 may be electrostatic lenses. The spectroscopic analyser being one of an electrostatic hemispherical analyser, a cylindrical mirror analyser, a time-of-flight analyser, a parallel plate analyser, or a retarding field analyser. The spectrometer comprises an x-ray source 50, monochromator 56, retarding lens 60, and electrostatic hemispherical analyser 114. The charged particles (photoelectrons emitted from a sample 58) arriving at the detector 16 have a spread in the energy dispersive direction 12.
Patent GB-2608066-A (GB)
Title: In-situ monitoring, calibration, and testing of a haptic actuator
Inventor: ALESKEY S KHENKIN
IPC: G06F3/01
Filed: 2021-03-11
Abstract: A method may include measuring an electrical parameter of an electromagnetic load having a moving mass during the absence of a driving signal actively driving the electromagnetic load, measuring a mechanical parameter of mechanical motion of a host device comprising the electromagnetic load, correlating a relationship between the mechanical parameter and the electrical parameter, and calibrating the electromagnetic load across a plurality of mechanical motion conditions based on the relationship.
Patent GB-2608973-A (GB)
Title: Elastic bicomponent fiber having unique handfeel
Inventor: SHAWN E JENKINS
IPC: D04H1/541
Filed: 2021-03-31
Abstract: An elastomeric bicomponent fiber, including at least one sheath and a core, with non-blocking properties and a garment-like feel is provided. The core includes an elastomer and a secondary amide, and the sheath includes a non-elastomeric polyethylene. Further, the sheath can be present as a small portion of the total elastomeric composition, and the secondary amide can be present as a small portion of the core, while forming a bicomponent fiber with non-blocking properties and a garment-like feel.
Patent GB-2616136-A (GB)
Title: Dielectricity and thermal conductivity enhanced bio-based high-temperature-resistant epoxy resin, preparation method therefor, and application thereof
Inventor: KAI GUO
IPC: C08G59/24
Filed: 2021-04-14
Abstract: Disclosed in the present invention are a dielectricity and thermal conductivity enhanced bio-based high-temperature-resistant epoxy resin, a preparation method therefor, and an application thereof. The dielectric constant of the epoxy resin is 8.2-10. The present method is simple in operation process and shorter in curing time; the obtained bio-based epoxy resin polymer material is excellent in performance, and the dielectric constant is increased to 8.2-10; moreover, the epoxy resin has good thermal conductivity and heat capacity ratio (0.743 W/m·K, 5.364 J/g·K), and can meet the application of corresponding functionalized electronic products.
Patent GB-2620531-A (GB)
Title: A fire suppression system
Inventor: GRAEME SARGENT
IPC: A62C13/78
Filed: 2022-04-07
Abstract: A fire suppression system is disclosed. The system comprises a housing having one or more ports to receive a nozzle of a fire extinguisher. The fire extinguisher itself includes a container to house a fire-extinguishing fluid, the container being fluidly linked with the nozzle. Actuation of the nozzle allows fire-extinguishing fluid to exit the container via the nozzle, whereby insertion of a nozzle into a port actuates the nozzle. The or each port is in fluid linkage with a distribution head by means of a pipe to distribute fire extinguishing fluid, the port and the distribution head being fluidly linked.
Patent GR-880100527-A (GR)
Title: Apparatus for mixing liquids
Inventor: BOROVINSKY PETROVICH VADIM EN
IPC: B01F15/00
Filed: 1988-08-12
Abstract: A liquid mixing device (machine) includes a casing 1, containing an axle, to which upper blades are firmly fixed 7, and to which are also fixed curved lower blades 12. Every upper blade 7 is equipped with at least one disc 8, installed on one free end of the blade 7. Every lower blade 12 consists of two plates 14, 15. The aforementioned blade 14, is bow-shaped, while the other blade 15 is shaped into a longitudinal curve.
Patent GR-990100151-A (GR)
Title: Opener of the twisting of whirls
Inventor: ALEXANDROU ALEXANDROU GEORGIOS
IPC: B63H1/26
Filed: 1999-05-06
Abstract: This invention refers to a method, a use and a construction/instrument for the reduction of the negative elements that follow the whirling of the air and/or of the sea by the revolving movement  of blades, for propulsion or not.The purpose of this invention is that the blades of the propeller and/or of an other revolving movement instrument, with the positive work that they produce, they achieve at the same time the DECLENCHING of the TWISTING of the whirls, reinforcing, in this way, the propulsion of ships/crafts, airctafts and other propulsive means having a revolving movement. This invention provides a method where the TIGHTENING of the TWISTING which is developed inside the circumference that is traced by the tips of the blades of the propeller in the water and/or the air is OPENED with the creation of a decentralising point/part of the TIGHTENING of the TWISTING in question, a fact that reduces the caviation in the liquids as well.Thus on the blades of a revolving movement instrument a projecting arc/a packsaddle is created, which is in extension on the vertical radius that joints together the centre of the axis of revolution with the middle of the tip of each blade, so that the projection/packsaddle in convergence with the middle of the tip of the blade by opening the circumference that the tips of the blade trace in the water and/or the air, reduces at the same time the tightening of the twisting of the whirlwinds and/or of the whirlpools, having as a result the reinforcement of the revolving movement and/or of the propulsive movement.This invention can be applied in propellers of ships/crafts, helicopters, screw-ships, blades of the jets' turbines, torpedoes, missiles, wheels of vehicles, rims of vehicles, salvers of vehicles, fans, windmills and/or other propulsive constructions and or propulsive instruments having a revolving movement.This invention can be applied in propellers of ships/crafts, helicopters, screw-ships, blades of the jets' turbines, torpedoes, missiles, wheels of vehicles, rims of vehicles, salvers of vehicles, fans, windmills and/or other propulsive constructions and/or propulsive instruments having a revolving movement.The advantages of this invention are clear in the developmennt of the water propellers and/or of the air-propellers and/or  of other instruments and/or constructions having revolving movement blades, for the reason that an essential resistance in the revolving and/or propulsive movement is reduced with the "OPENER OF THE TWISTING OF WHIRLS" having an essential financial return, since it increases the speed by the small horse power or the horse power is reduced by the same speed
Patent GT-197748227-A (GT)
Title: Nuevos tiolfosfatos y tionotiolfosfatos de 0-etil-s-n-propil-0-2,2,2,-trihaloetilo con propiedades insecticidas, acaricidas y nematodicidas, procedimiento para su produccion y composicion insecticidas acaricidas y nematodicidas a base de los mismos
IPC: A01N37/34
Filed: 1977-09-05
Abstract: SE REFIERE A NUEVOS TIOLFOSFATOS Y TIONOTIOLFOSFATOS DE OETILSNPROPILO2,2,2TRIHALOETILO,QUE TIENE LA ESTRUCTURA QUE TIENE LA ESTRUCTURA QUIMICA I, CONTENIDA EN LA FICHA TECNICA RESPECTIVA. A UN PROCEDIMIENTO PARA SU PRODUCCION Y A COMPOSICIONES INSECTICIDAS,ACARICIDAS Y NEMATODICIDAS A BASEDE LOS MISMOS.Y SIGNIFICA OXIGENO O AZUFRE Y X HALOGENO. HA CIENDOLO REACCIONAR UN HALOGENURO DE TIOODITIOFOSFORILO DEESTRUCTURA QUIMICA II, DONDE Y ES OXIGENO O AZUFRE Y HEL ES HALURO CON MOCH2CX3, M ES HIDROGENO O METAL ALCALINO.
Patent GT-197957335-A (GT)
Title: Una composicion herbicida sinergica.
IPC: A01N53/00
Filed: 1979-04-09
Abstract: COMPRENDE UNA MEZCLA DE UNA ANILIDA QUE TIENE LA ESTRUCTURA QUIMICA CONTENIDA EN LA FICHA TECNICA RESPECTIVA, CON UN TIOCARBAMATO. LA RELACION DE PESO DE ANILINA A TIOCARBAMATO ES DE 0.00150:1. MEZCLA SINERGICA.
Patent GT-198700013-A (GT)
IPC: B29C48/13
Filed: 1987-03-20
Abstract: This invention relates to a method and an apparatus for the production of ribbed pipes. The apparatus comprises a core (8, 9, 10) which together with an extrusion sleeve (4) forms a nozzle (11) through which a plastic material is fed into a moulding space (12) defined between a mandrel (9) and chill moulds (1, 2) moveable with respect to the mandrel. Ribbed pipes produced by means of known apparatuses have, for various reasons, an uneven inner face, incomplete ribs or air closures and weak seams in the pipe walls and ribs. These disadvantages can be eliminated by such a dimensioning of the moulding space (12) of the apparatus and the grooves (13) of the chill moulds that the volume of a space defined between a plane (20) extending adjacent to the end face of the extrusion sleeve, a surface (16) of the mandrel, and a plane (17) comprising the envelope surface of the kernel (10) equals to the combined volume of the grooves (13) positioned within the area of the mandrel at each particular moment.
Patent GT-199800031-A (GT)
Title: Procedimiento para la obtencion de "compuestos insecticidad de oxadiacina".
Inventor: DEKEYSER MARK ACHIEL
IPC: C07D413/04
Filed: 1998-02-05
Abstract: EL PRESENTE INVENTO ESTA RELACIONADO CON UN COMPUESTO QUE TIENE LA FORMULA (I), EN LA QUE R ES UN GRUPO HETEROCICLICO C4C5, QUE CONTIENE UN ATOMO DE NITROGENO, AZUFRE U OXIGENO, EN LA QUE EL GRUPO HETEROCICLICO PUEDE SER SUSTITUIDO O NO SUSTITUIDO CON 1 A 3 ATOMOS DE HALOGENO, O CON UN GRUPO HALOALQUILICO C1C4: Y R' ES HIDROGENO, HALOGENO, HALOALQUIL C1C4 O HALOALCOXI C1C4. ESTOS COMPUESTOS, O LAS SALES FISIOLOGICAMENTE ACEPTABLES DE ESTOS, SON UTILES COMO INSECTICIDAS.
Patent GT-200400058-A (GT)
Title: Nueva difenilazetidinona con propiedades fisiologicas mejoradas, procedimiento para su preparacion, medicamentos que comprenden este compuesto y su uso
Inventor: JAEHNE DR GERHARD
IPC: A61K31/16
Filed: 2004-03-31
Abstract: LA PRESENTE INVENCION SE REFIERE AL COMPUESTO QUE SE MUESTRA EN EL RESUMEN Y QUE TIENE UNA ESTABILIDAD AUMENTADA TANTO EN EL ENTORNO ACIDO (ESTOMAGO) COMO EN EL ENTORNO LEVEMENTE ALCALINO (INTESTINO DELGADO). EL COMPUESTO ES DE UTILIDAD COMO HIPOLIPIDEMIANTE.
Patent GT-200800246-A (GT)
Title: Proceso de manufactura para producir un contenedor con cuello
Inventor: MYERS GARY L
IPC: B21D51/26
Filed: 2008-11-14
Abstract: LA PRESENTE INVENCIÓN SE REFIERE A UN SISTEMA DE FORMACIÓN DE CUELLO QUE INCLUYE UNA PLURALIDAD DE TROQUELES DE FORMACIÓN DE CUELLO, CADA TROQUEL DE FORMACIÓN DE CUELLO TIENE UNA SUPERFICIE DE FORMACIÓN DE CUELLO AL MENOS PARCIALMENTE NO PULIDA (10) Y UN RELIEVE NO PULIDO (20) QUE SIGUE LA SUPERFICIE DE FORMACIÓN DE CUELLO. LA PRESENTE INVENCIÓN ADICIONALMENTE PROPORCIONA UN MÉTODO DE FORMACIÓN DE CUELLO DE UN CONTENEDOR DE METAL QUE INCLUYE PROPORCIONAR UNA PREFORMA DE METAL; CONFORMAR LA PREFORMAR EN UNA MATERIA PRIMA PARA BOTELLA (1-14); Y FORMAR EL CUELLO DE LA MATERIA PRIMA PARA BOTELLA DE METAL (1-14), EN DONDE LA FORMACIÓN DE CUELLO INCLUYE AL MENOS UN TROQUEL DE FORMACIÓN DE CUELLO QUE TIENE UNA SUPERFICIE DE FORMACIÓN DE CUELLO AL MENOS PARCIALMENTE NO PULIDA (10). T2008
Patent GT-200900057-A (GT)
Title: 4-[4-({[4-cloro-3-(trifluorometil)fenil]carbamoil}amino)-3-fluorofenoxi]-n-metilpiridina-2-carboxamida monohidrato
Inventor: ALFONS GRUNENBERG
Filed: 2009-03-12
Abstract: LA PRESENTE INVENCIÓN SE REFIERE A 4-[4-({[4-CLORO-3-(TRIFLUROMETIL)FENIL]CARBAMOIL}AMINO)-3-FLUOROFENOXI]-N-METILPIRIDINA-2-CARBOXAMIDA MONOHIDRATO, A PROCEDIMIENTOS PARA SU PREPARACION, A COMPOSICIONES FARMACEUTICAS QUE LO COMPRENDEN Y A SU USO EN EL COMBATE DE TRASTORNOS HIPERPROLIFERATIVOS.
Patent GT-201500063-A (GT)
Title: Nanopartículas terapéuticas que comprenden un agente terapéutico y métodos para realizarlas y usarlas
Inventor: FIGUEIREDO MARIA
IPC: A61P35/02
Filed: 2015-03-16
Abstract: LA PRESENTE DESCRIPCIÓN SE REFIERE GENERALMENTE A NANOPARTÍCULAS QUE COMPRENDEN UN ÁCIDO SUSTANCIALMENTE HIDROFÓBICO, UN AGENTE TERAPÉUTICO BÁSICO QUE TIENE UN NITRÓGENO PROTONABLE Y UN POLÍMERO. OTROS ASPECTOS INCLUYEN MÉTODOS PARA HACER TALES NANOPARTÍCULAS.
Patent IN-2014DE00772-A (IN)
Inventor: Jonathan Paul BAKER
IPC: F03D11/00
Filed: 2014-03-14
Abstract: A system and method for pressure based load measurement are provided. The system and method measure at least one pressure differential on an airfoil and determine at least one aerodynamic load associated with the at least one pressure differential. The determined at least one load is used to modify characteristics of the airfoil to increase efficiency and/or avoid damage. The determined at least one aerodynamic load may be further utilized to balance and/or optimize loads at the airfoil, estimate a load distribution along the airfoil used to derive other metrics about the airfoil, and/or used in a distributed control system to increase efficiency and/or reduce damage to, e.g., one or more wind turbines.
Patent KR-830001097-A (KR)
Title: 삽탈(揷脫)이 용이한 저장용기
Filed: 1979-08-10
Abstract: 내용 없음
Patent KR-830002191-A (KR)
Title: 드레인 회수장치
IPC: F22D11/06
Filed: 1980-03-08
Abstract: 내용 없음
Patent KR-830002514-A (KR)
Title: 인분뇨의 탈취방법
IPC: A61L11/00
Filed: 1980-05-29
Abstract: 내용 없음
Patent KR-830005865-A (KR)
Title: 인체 황체형성 호르몬의 제조방법
IPC: C12N15/02
Filed: 1981-08-21
Abstract: 내용 없음
Patent KR-840001648-A (KR)
Title: 산성 용액을 전기분해하기 위한 캐소드 및 이의 제조방법
IPC: C25B11/06
Filed: 1982-09-20
Abstract: 내용 없음
Patent KR-850002462-A (KR)
Title: 아미디노 우레아 유도체의 제조방법
IPC: C07C273/06
Filed: 1983-09-06
Abstract: 내용 없음
Patent KR-840005875-A (KR)
Title: 자기 기록매체
IPC: G11B5/708
Filed: 1983-09-29
Abstract: 내용 없음
Patent KR-850006268-A (KR)
Title: 코어레스 무브러시 모우터
IPC: H02K29/00
Filed: 1984-02-25
Abstract: 내용 없음
Patent KR-840008229-A (KR)
Title: 반도체 레이저의 구동방법
IPC: G11B7/125
Filed: 1984-03-09
Abstract: 내용 없음.
Patent KR-840009120-A (KR)
Title: 수지 증강 안료의 제법
IPC: C09B67/20
Filed: 1984-04-04
Abstract: 내용 없음
Patent KR-850000591-A (KR)
Title: 에너지 발생 장치
IPC: F02G5/02
Filed: 1984-06-21
Abstract: 내용 없음.
Patent KR-860001304-A (KR)
Title: 성형식 마찰재
IPC: C09K3/14
Filed: 1984-07-20
Abstract: 내용 없음
Patent KR-850002643-A (KR)
Title: 다층 금속/유기중합체 적층구조물
IPC: B32B15/01
Filed: 1984-09-25
Abstract: 내용 없음
Patent KR-850003380-A (KR)
Title: 불소화 알코올의 알콕실화방법
IPC: C07C233/18
Filed: 1984-10-12
Abstract: 내용 없음
Patent KR-850005296-A (KR)
Title: 이주속 압연 제어방법(異周速壓延制御方法)
IPC: B21B37/00
Filed: 1985-01-09
Abstract: 내용 없음
Patent KR-850006639-A (KR)
Title: 액상물의 분체화 방법 및 장치
IPC: G21F9/20
Filed: 1985-03-06
Abstract: 내용 없음
Patent KR-870003639-A (KR)
Title: 플라이백 트랜스포머
Filed: 1985-09-25
Abstract: 내용 없음
Patent KR-870003846-A (KR)
Title: 단부 개방 래칫 렌치
Filed: 1985-10-31
Abstract: 내용 없음
Patent KR-860008208-A (KR)
IPC: C07J5/00
Filed: 1986-04-03
Abstract: The invention refers to compounds having anti- inflammetory activity characterized by the formulaor a stereoisomeric component thereof, in which formula the 1,2-position is saturated or is a double bandX, is selected from hydrogen, fluorine, chlorine and bromineX<sub>2</sub> is selected from hydrogen, fluorine, chlorine and bromineR<sub>1</sub> is selected from hydrogen or a straight or branched hydrocarbon chain having 1-4 carbon atomsR<sub>2</sub> is selected from hydrogen or straight and branched hydrocarbon chains having 1-10 carbon atoms andR<sub>3</sub> is selected fromY is O or SR<sub>4</sub> is selected from hydrogen, straight or branched hydrocarbon chains having 1-10 carbon atoms or from phenylR<sub>5</sub> is selected from hydrogen or methyl andR<sub>6</sub> is selected from hydrogen, straight or branched, saturated or unsaturated hydrocarbon chains having 1-10 carbon atoms, an alkyl group substituted by at least one halogen atom, a heterocyclic ring system containing 3-10 atoms in the ring system, -(CH<sub>2</sub>)<sub>m</sub> CH(CH<sub>2</sub>)<sub>n</sub> (m=0,1,2; n=2,3,4,5,6), phenyl or benzyl groups which are unsubstituted or substituted by one or more alkyl, nitro, carboxy, alkoxy, halogen, cyano, carbalkoxy or trifluoromethyl group(s), provided that when R<sub>2</sub> is hydrogen R<sub>1</sub> is methyl.The invention also refers to a process and intermediates for the preparation of these compounds, a pharmaceutical preparation containing one of the compounds and a method for the treatment of inflammatory conditions.