baber/WOPTO huggingface dataset:
Patent GB-2601962-A (GB)
Title: System comprising vehicular compression ignition engine and an emissions control device comprising an electrically heatable element
Inventor: DAVID BERGEAL
IPC: F02D41/40
Filed: 2020-08-04
Abstract: A system (2) comprising (i) a vehicular compression ignition engine (1) comprising one or more engine cylinders and one or more electronically-controlled fuel injectors therefor; (ii) an exhaust line (3) for the engine comprising: a first emissions control device (5) comprising a first honeycomb substrate, which comprises a hydrocarbon adsorbent component; and a second emissions control device (7) comprising an electrically heatable element (7a) and a catalysed second honeycomb substrate (7b), which comprises a rhodium-free platinum group metal (PGM) comprising platinum, wherein the electrically heatable element (7a) is disposed upstream from the catalysed second honeycomb substrate (7b) and wherein both the electrically heatable element (7a) and the catalysed second honeycomb substrate (7b) are disposed downstream from the first honeycomb substrate; a third emissions control device(22), which is a third honeycomb substrate comprising an ammonia-selective catalytic reduction catalyst disposed downstream from the second emissions control device (7); and one or more temperature sensors located: upstream of the electrically heatable element and/or upstream of the first honeycomb substrate; and between the electrically heatable element (7a) and the catalysed second honeycomb substrate (7b); and (iii) an engine control unit (20) comprising a central processing unit pre-programmed, when in use, to control both a heating activation state of the electrically heatable element (7a); an injection timing strategy of the one or more electronically-controlled fuel injector to increase the temperature of at least the first emissions control device following key-on/cold-starting a vehicle comprising the system, wherein the one or more temperature sensors are electrically connected to the engine control unit for feedback control in the system.
Patent GB-2607391-A (GB)
Title: Nucleic acid amplification, kits, methods, and uses
Inventor: JING ZHANG
IPC: C12Q1/70
Filed: 2022-03-09
Abstract: A kit for use in the isothermal amplification of nucleic acids in a sample comprising a liquid transport medium for pathogens, wherein the kit comprises: a chelating agent and a primer mix. The chelating agent may be one that preferentially bind to calcium ions, such as egtazic acid (EGTA) for example. The liquid transport medium may be a viral transfer medium (VTM) or universal transport medium (UTM). The nucleic acids may be from a viral pathogen/microorganism, chlamydia, or mycoplasma. The nucleic acids may be from SARS-CoV-2. The isothermal amplification may be loop-mediated isothermal amplification (LAMP). The kit may further comprise lyophilised beads. Also claimed is the use of a chelating agent as an additive to an isothermal amplification reaction mixture to improve amplification of the nucleic acids. A third embodiment defines a method of isothermal amplification of nucleic acids. A fourth embodiment defines a method of detecting SARS-CoV-2 in vitro using isothermal amplification. VTMs are widely used to transport samples, but may inhibit isothermal amplification. Therefore, the invention uses a chelating agent to improve isothermal amplification in the detection of COVID-19/coronavirus disease by increasing sensitivity and rate of reaction.
Patent GB-2609275-A (GB)
Title: Incident-based management system for new engineering contract
Inventor: CHUN KEUNG NG
IPC: G06Q50/08
Filed: 2022-03-14
Abstract: A computer system executable on a cloud environment for managing a large-scale construction project. In an embodiment, the project adopts New Engineering Contract for stimulating collaborations between project parties. The system includes a gateway device 310 and an incident-based common data environment (CDE) 320. The gateway device is configured to receive documents and correspondences from the parties. The CDE includes a numbering module 400 for registering the documents and correspondences based on a primary incident 331. The numbering module generates a document code for each document or correspondence. The document code is formed by at least a document type reference defining a nature of the document or correspondence; an incident reference defining a workflow based on the primary incident; and a sequential suffix. In an embodiment, the CDE comprises a blockchain network 340 and the gateway device generates a new block 341A for each document or correspondence received, preferably with the document code in the block header.
Patent GB-2601457-A (GB)
Title: Method for producing fuel using renewable methane
Inventor: PATRICK J FOODY
IPC: C10L1/08
Filed: 2021-04-30
Abstract: There is provided a method of producing renewable hydrogen comprising: (a) providing natural gas for a hydrogen production process, said natural gas comprising renewable natural gas and non-renewable natural gas, said hydrogen production process comprising methane reforming; (b) providing a feed comprising at least a portion of the natural gas to the methane reforming, said feed comprising a first portion that is converted to syngas and a second portion that passes through the methane reforming unconverted; (c) directing the second portion of the feed that passes through the methane reforming unconverted to one or more burners as fuel for the methane reforming; (d) apportioning the renewable natural gas such that the first portion of the feed has a larger renewable fraction than the second portion of the feed, and (e) producing a volume of hydrogen having renewable content from the hydrogen production process, wherein the yield of renewable content is dependent on the first portion of the feed being apportioned a larger renewable fraction than the second portion of the feed.
Patent GB-2603665-A (GB)
Title: Fuel cell unit and fuel cell stack with raised members
Inventor: EUAN NORMAN HARVEY FREEMAN
IPC: H01M8/2483
Filed: 2019-12-03
Abstract: A metal-supported solid oxide fuel cell unit comprises a separator plate 12 and metal support plate 14 with chemistry layers provided over a porous region, the separator plate and the metal support plate overlying one another to form a repeat unit with a fluid volume therebetween, the plates each having at least one fluid port, wherein the ports are aligned and communicate with the fluid volume, and at least one of the plates has pressed raised members 120 that extend away from the other plate and are arranged around the or each fluid port, wherein the raised members (120) are arranged to define a space within which is accommodated a gasket 34 and/or arranged to define a perimeter outside of which is accommodated a gasket.
Patent GB-2619748-A (GB)
Title: A vibroacoustic tactile device
Inventor: CARL JOHN SIMMONS
IPC: A61H23/02
Filed: 2022-06-15
Abstract: A vibroacoustic tactile device comprises at least one vibroacoustic tactile panel. The, or each, vibroacoustic tactile panel comprises a vibroacoustic generating layer, a tactile surface, and a vibroacoustic transmission layer located between the vibroacoustic generating layer and the tactile surface. The vibroacoustic tactile device further comprises a signal delivery module 148 and at least one vibracoustic tactile transducers 152A, 152B or exciters 150A, 150B. The signal delivery module delivers an acoustic signal to the transducer(s)/exciter(s) and the transducer(s)/exciter(s) generate a vibroacoustic signal which is transmitted to the vibroacoustic generating layer. The generating layer may comprise a plurality of supports and may comprise a closed foam material, such as Ethylene-vinyl acetate (EVA). The transmission layer may comprise a wooden board and the tactile surface may be formed from TPE. The device may comprise a plurality of hingedly attached panels. Also disclosed is a method of transmitting a vibroacoustic signal onto a human body.
Patent GB-2605935-A (GB)
Title: Hemostatic tool and fabrication method therefor
Inventor: SOO MI KIM
IPC: A61L24/10
Filed: 2020-10-19
Abstract: Provided is a hemostatic tool comprising: a porous matrix layer containing a biocompatible polymer; a hemostatic layer loaded on the porous matrix layer and including a polymer having a polyhydric phenol-bearing residue introduced thereinto; and a binding layer interposed between the porous matrix layer and the hemostatic layer to prevent the separation between the porous matrix layer and the hemostatic layer.
Patent GB-2609881-A (GB)
Title: Crossbar arrays for computations in memory-augmented neural networks
Inventor: Thomas Bohnstingl
IPC: G06N3/063
Filed: 2021-03-16
Abstract: In a hardware-implemented approach for operating a neural network system, a neural network system is provided comprising a controller, a memory, and an interface connecting the controller to the memory, where the controller comprises a processing unit configured to execute a neural network and the memory comprises a neuromorphic memory device with a crossbar array structure that includes input lines and output lines interconnected at junctions via electronic devices. The electronic devices of the neuromorphic memory device are programmed to incrementally change states by coupling write signals into the input lines based on: write instructions received from the controller and write vectors generated by the interface. Data is retrieved from the neuromorphic memory device, according to a multiply-accumulate operation, by coupling read signals into one or more of the input lines of the neuromorphic memory device based on: read instructions from the controller and read vectors generated by the interface.
Patent GB-2611703-A (GB)
Title: Fault detection method and system for a subsea electrical line
Inventor: ULRICH KLEINE
IPC: E21B47/12
Filed: 2021-07-20
Abstract: Techniques for identifying and locating a fault within a subsea hydrocarbon extraction system include receiving, via a main channel line and from a first subsea modem, first data associated with a first subsea control module, wherein the main channel line is communicatively coupled to the first subsea modem via a first channel leg line, receiving, via the main channel line and from a second subsea modem, second data associated with a second subsea control module, wherein the main channel line is communicatively coupled to the second subsea modem via a second channel leg line, identifying a fault or a developing fault in the first channel leg line based on an analysis of the first data and the second data, and generating and transmitting a notification indicating the fault or the developing fault in the first channel leg line.
Patent GB-2613102-A (GB)
Title: Integrating a decoder for hierachical video coding
Inventor: FABIO MURRA
IPC: H04N19/42
Filed: 2021-07-28
Abstract: A video decoder is provided with: one or more decoder plug-ins that provide a wrapper for one or more respective base decoders to implement a base decoding layer to decode an encoded video signal, each wrapper implementing an interface for data exchange with a corresponding base decoder; an enhancement decoder to implement an enhancement decoding layer, the enhancement decoder being configured to: receive an encoded enhancement signal; and, decode the encoded enhancement signal to obtain one or more layers of residual data, the one or more layers of residual data being generated based on a comparison of data derived from the decoded video signal and data derived from an original input video signal, and a decoder integration layer to control operation of the one or more decoder plug-ins and the enhancement decoder to generate a decoded reconstruction of the original input video signal using and the one or more layers of residual data from the enhancement encoding layer, wherein the decoder integration layer provides a control interface for the video decoder. A system, methods and computer readable medium are also provided.
Patent GB-2615047-A (GB)
Title: Cement plug internal anti-rotation
Inventor: Alexander schultz
IPC: E21B33/16
Filed: 2021-10-15
Abstract: A plug system includes a locked member of a first plug and a free member of a second plug. The locked member has a first locking end having a first anti -rotation feature. The free member has a second locking end having a second anti -rotation feature. The first anti -rotation feature and the second anti -rotation feature are configured to fit together to resist a rotation between the free member and the locked member to thereby resist rotation of the second plug with respect to the first plug.
Patent GB-2617724-A (GB)
Title: Lithium nickel manganese cobalt oxide positive electrode material of high-performance power battery and preparation method therefor
Inventor: YINGHAO XIE
IPC: H01M4/525
Filed: 2022-05-27
Abstract: The present invention relates to the technical field of lithium-ion battery materials. Disclosed are a lithium nickel manganese cobalt oxide positive electrode material of a high-performance power battery and a preparation method therefor. In the preparation method for the lithium nickel manganese cobalt oxide positive electrode material of the present invention, a melt mixing method, a spray-drying method, a sol-gel method, and a high-temperature solid-phase method are combined to cause precursor components to be uniformly mixed to obtain a product having a uniform particle size, excellent electrochemical performance, and high cycle stability. The method has simple operation steps, low cost of raw materials, short time consumed, and high production efficiency, and can realize large-scale industrial production. The present invention also provides a lithium nickel manganese cobalt oxide positive electrode material prepared by the method, which has high charge-discharge specific capacity, and high thermal stability and cycle stability.
Patent GR-880100737-A (GR)
Title: Method and arrangement for natural separation of the oil from olive mass
Inventor: GEORGOULIS DIANELLOS
IPC: C11B1/00
Filed: 1988-10-31
Abstract: The NFOS is a machine that can operate with any oil press and cooperate for the production of olive oil. It is a machine that can be manufactured in machine shops specialising in oil press machinery. Its position in a modern centrifugal oil press is the horizontal centrifuge (decanter), which it replaces completely. Its simple construction and operation result in cost savings with olive oil production due to the fact that it has a low manufacture cost and does not require any high technology; it has a low operating cost because, on the one hand requires very low energy (2kW) and on the other, it has no maintenance cost due to the absence of complex mechanisms and does not require parts. Finally, the quality of olive oil is better as the oil is naturally refined and not violently as in the centrifuge, and as a result, emulsfied impurities and rancidity can be avoided.
Patent GT-197959152-A (GT)
Title: Novedoso recubrimiento, pintura tapiz y cernido a la vez, su composicion y aplicacion
IPC: E04F13/14
Filed: 1979-08-09
Abstract: MATERIAL PARA REVESTIMIENTO DE MUROS, TECHOS O TABIQUES CONSISTENTE EN PINTURA DE HULE, COLA BLANCA, BLANCO ESPANA ASERRIN, AGUA, PUEDE APLICARSE A MAQUINA Y/O A MANO.
Patent GT-198303800-A (GT)
Title: Mejoras relativas a filtros para articulos de fumar
IPC: A24D3/04
Filed: 1983-10-21
Abstract: SE REFIERE A UN ELEMENTO DE FILTRO VENTILADO PARA CIGARRI LLOS,QUE COMPRENDE UN CANUTO DE MATERIAL FILTRANTE FIBROSO ENVUELTO EN UNA ENVOLTURA PROLONGANDOSE HASTA UN EXTREMO DE DICHO ELEMENTO HA SIDO O HAN SIDO EXTRAIDAS POR ACCION DEL CALOR,AL HACER RODAR RELATIVAMENTE ENTRE SI,Y EN CONTACTO MUTUO,DICHO ELEMENTO Y UN DISPOSITIVO CALENTADO.
Patent GT-199400018-A (GT)
Title: Corticosteroide-17-alquilcarbonato-21-(0)-esteres de acido carboxilico y carbonico, procedimientos para su preparacion y medicamentos que los contienen
IPC: A61K31/57
Filed: 1994-03-14
Abstract: SE DESCRIBE UN CORTICOIDE17ALQUILCARBONATO21[0]ESTER DEACIDO CARBOXILICO Y ACIDO CARBONICO DE LA FORMULA (I), EN LAQUE A,Y,Z,R(1),R(2)&R(3) SON GRUPOS FUNCIONALES DESCRITOS ENEL EXPEDIENTE. ESTOS COMPUESTOS SON ANTIFLOGISTICAMENTE MUY EFICACES LOCAL Y TOPICAMENTE Y MUESTRAN UNA MUY BUENA RELACION DE EFECTO ANTIINFLAMATORIO LOCAL A SISTEMICO.
Patent GT-200100163-A (GT)
Title: Compuestos heterociclicos como ligandos de los receptores gaba a.
Inventor: YOHANES DANIEL
IPC: A61P25/00
Filed: 2001-08-10
Abstract: LA PRESENTE INVENCION SE REFIERE A COMPUESTOS DE FORMULA QUIMICA QUE A CONTINUACION SE DESCRIBE EN DONDE, A, V, Y, J, E, X, T, G, Q, W, Z, B, N Y M SON GRUPOS FUNCIONALES QUE SE DESCRIBEN EN EL EXPEDIENTE. ESTOS COMPUESTOS SON AGONISTAS, ANTAGONISTAS, O AGONISTS INVERTIDOS ALTAMENTE SELECTIVOS PARA LOS RECEPTORES CEREBRALES GABA A O PROFARMACOS DE AGONISTAS, ANTAGONISTAS O AGONISTAS INVERTIDOS PARA RECEPTORERS CEREBRALES GABA A. ESTOS COMPUESTOS SIRVER PARA TRATAR ENFERMEDADES COMO DEPRESION, ASIEDAD, TRASTORNOS DEL SUEÑO, DEFICIENCIA COGNITIVA, TRASTORNO DE DEFICIT DE ATENCION, ETC.
Patent GT-200900298-A (GT)
Title: Plantas de brócoli tolerantes al trastorno de tallo hundido/ resquebrajado
Inventor: FRANCISCUS VAN DEN BOSCH
IPC: A01H4/00
Filed: 2009-11-13
Abstract: LA PRESENTE INVENCIÓN SE REFIERE A SEMILLAS Y PLANTAS DE BRÓCOLI QUE COMBINAN ALTO RENDIMIENTO Y CALIDAD, CON LA TOLERANCIA AL TRASTORNO DEL TALLO HUNDIDO/RESQUEBRAJADO. LA INVENCIÓN ADEMÁS PROVEE SEMILLAS Y PLANTAS DE LAS LÍNEAS DE BRÓCOLI DESIGNADAS BRM53-3915 Y BRM53-3916, Y DESCENDENCIA PRODUCIDA CON POR LO MENOS UNA DE ESTAS PLANTAS COMO UN PROGENITOR. LA INVENCIÓN ADEMÁS SE REFIERE A LAS PLANTAS, SEMILLAS Y A CULTIVOS DE TEJIDO DE LA VARIEDAD DE BRÓCOLI HÍBRIDA RX05951180.
Patent IN-2014CH00518-A (IN)
Inventor: SRINIVASAN THIRUMALAI RAJAN
IPC: C07H19/00
Filed: 2015-02-04
Abstract: The present invention relates to a process for the preparation of Clofarabine compound of formula-1.A process for the preparation of pure Clofarabine compound of formula-1, comprising of; a)	Reacting the 2-Deoxy-2-fluoro-l,2,5-tri-0-benzoyl-D-ribofuranose compound of formula-2 BzO \	J BzCf F Formula-2 with a suitable brominating agent in a suitable solvent to provide 2-Deoxy-l-a-bromo-2-P-fluoro-3,5-di-0-benzoyl-D-ribofuranose compound of formula-3, BzO \	I BzO*	F Formula-3 b)	reacting the compound of formula-3 with 2,6-dichloropurine compound of formula-4 CI Formula-4 in presence of a suitable inorganic base selected from alkali metal carbonates, alkali metal hydroxides, alkali metal bicarbonates in a suitable solvent to provide 2,6-dichloro-9-(3,5-di-0-benzoyl-2-deoxy-2-fluoro-D-arabinofuranosyl)-9H-purine compound of formula-5, Vvw1 BzO \	I J Cl Formula-5 c)	amination of compound of formula-5 with a solution of ammonia in dimethoxyethane in a suitable solvent to provide 6-amino-2-chloro-9-(2'-deoxy-2'-fluoro-3',5'-di-0-benzoyl- P-D-arabinofuranosyl)-9H-purine compound of formula-6, /=N J—\ NwN BzO	F	Hf CI Formula-6 d)	debenzoylation of compound of formula-6 by treating it with a suitable base in a suitable solvent to provide 2-chloro-9-(2'-deoxy-2'-fluoro-P-D-arabinofuranosyl)-9H-purine-6-amine (Clofarabine) compound of formula-1, e)	purifying the compound of formula-1 by recrystallizing it from a suitable solvent to provide pure Clofarabine compound of formula-1.
Patent IN-2014DE00763-A (IN)
Inventor: RICHARD L LEIMBACH
IPC: A61B/
Filed: 2014-03-14
Abstract: An interchangeable shaft assembly for use with a surgical instrument. The surgical instrument may include a frame that operably supports a plurality of drive systems and defines an actuation axis. The shaft assembly may comprise a first shaft that is configured to apply first actuation motions to a surgical end effector that is operably coupled thereto. A proximal end of the first shaft is configured to be operably releasably coupled to a first one of the drive systems supported by the frame in a direction that is substantially transverse to the actuation axis
Patent KR-830000852-A (KR)
Title: 버튼과 같은 요소를 섬유재료에 고정시키는 방법
Filed: 1979-09-24
Abstract: 내용 없음
Patent KR-830001864-A (KR)
Title: 3-아미노프로판-1,2-디올 유도체의 제조방법
IPC: C07C231/06
Filed: 1980-02-29
Abstract: 내용 없음
Patent KR-830004551-A (KR)
Title: 회전경사판과 기타 이와 같은 종류의 워블기어의 회전을 방지하는 방법
Filed: 1980-11-19
Abstract: 내용 없음
Patent KR-830003926-A (KR)
Title: 조립방법 및 장치
IPC: B01J2/04
Filed: 1980-11-28
Abstract: 내용 없음
Patent KR-830004209-A (KR)
Title: 옥타데센산 아미드의 제법
IPC: C07C235/76
Filed: 1980-12-13
Abstract: 내용 없음
Patent KR-830004768-A (KR)
Title: 온실에 있어서의 후렉시블 스크린의 개폐장치
IPC: H01J29/80
Filed: 1981-02-19
Abstract: 내용 없음
Patent KR-830004949-A (KR)
Title: 임펙트 렌치 장치
Filed: 1981-04-18
Abstract: 내용 없음
Patent KR-830008113-A (KR)
Title: 구멍탄 화덕의 제조방법
Filed: 1981-11-06
Abstract: 내용 없음
Patent KR-830009304-A (KR)
Title: 염착방법 및 그 장치
IPC: D06B3/10
Filed: 1982-01-15
Abstract: 내용 없음
Patent KR-840001329-A (KR)
Title: 포 가
IPC: F41A27/00
Filed: 1982-08-17
Abstract: 내용 없음
Patent KR-840003850-A (KR)
Title: 전자사진 감광 인쇄 제판지의 제조방법
Filed: 1983-02-19
Abstract: 내용 없음
Patent KR-840006512-A (KR)
Title: 가스식 다리미
IPC: D06F75/02
Filed: 1983-10-21
Abstract: 내용 없음
Patent KR-850005784-A (KR)
Title: 보강된 목질라켓의 1차 프레임의 제조방법
Filed: 1984-02-17
Abstract: 내용 없음
Patent KR-850000397-A (KR)
IPC: C07D211/90
Filed: 1984-05-31
Abstract: A 1,4-dihydropyridine derivative of the formula   <IMAGE>   in which R and R1 each independently is hydrogen, C1-C4-alkyl, C1 to C12-alkoxy, C1-C4-halogenoalkoxy, halogen, nitro, trifluoromethyl, <IMAGE>   <IMAGE>  X is oxygen or sulphur, R4 and R5 each independently is hydrogen, C1-C4-alkyl, C1-C6-alkoxy, halogen, trifluoromethyl, amino or nitro, and R2 and R3 each independently is hydrogen, a C1-C10-alkyl, C2-C10-alkenyl or C3-C10-alkinyl radical which is optionally substituted by halogen, hydroxyl, C1-C4-alkoxy, amino, mono- and di-C1-C4-alkylamino, carbo-C1-C6-alkoxy and/or nitro, a C3 to C6-membered cycloalkyl radical, a phenyl radical which is optionally substituted by C1-C4-alkyl, C1-C6-alkoxy, halogen, amino and/or nitro, or a phenyl-C1-C3-alkyl radical, or a carbohydrate radical which is optionally bonded via a C1-C8-alkyl chain to the amide nitrogen atom or a pharmaceutically acceptable acid addition salt thereof, which improves the contractility of the heart, raises the blood pressure, lowers the blood sugar, reduces the swelling of mucous membranes and affects the salt and fluid balances of a patient.
Patent KR-860000498-A (KR)
Title: 위생단일제어 혼합기 이음쇠
IPC: F16K11/06
Filed: 1984-06-11
Abstract: 내용 없음
Patent KR-860001503-A (KR)
Title: 점화 프러그
IPC: H01T13/32
Filed: 1984-07-24
Abstract: 내용 없음
Patent KR-850005532-A (KR)
Title: 슈퍼캘린더의 닙이완 장지 및 방법
IPC: D21G1/00
Filed: 1985-01-23
Abstract: 내용 없음
Patent KR-860006522-A (KR)
Title: 점착 테프용 박리제의 제조 방법
Filed: 1985-02-04
Abstract: 내용 없음
Patent KR-850005792-A (KR)
Title: 나선형 튜우브의 형성 및 밀폐를 위한 방법 및 장치
IPC: B29L23/18
Filed: 1985-02-11
Abstract: 내용 없음
Patent KR-860009558-A (KR)
Title: 에러정정용 데코더회로의 에러위치 검출회로
Filed: 1985-05-23
Abstract: 내용 없음
Patent KR-860000341-A (KR)
IPC: B29B15/12
Filed: 1985-06-05
Abstract: A fiber reinforced material is made by passing a preheated tensioned filament array (10) over an arcuate extruder head (20) where thermoplastic polymer is flowed through the filament array to expel air from the array while coating the filaments with polymer. The filaments comprise 50 to 75 percent by volume of the material and the polymer has a relative viscosity of at least 50.
Patent KR-870000842-A (KR)
Title: 형광등의 전자식 안정기
Filed: 1985-06-25
Abstract: 내용 없음.
Patent KR-860002380-A (KR)
Title: 차량용 내장성형품
IPC: B60R13/00
Filed: 1985-09-19
Abstract: 내용 없음
Patent KR-860003810-A (KR)
Title: 냉장 진열 캐비넷
IPC: F25B5/02
Filed: 1985-09-27
Abstract: 내용 없음
Patent KR-860003252-A (KR)
IPC: A61P25/20
Filed: 1985-10-02
Abstract: Amides of the formula: 
<CHEM>
 (wherein Ra, Rb, Rc and Rd have defined values) and the 7-N-oxides and pharmaceutically acceptable acid addition salts thereof possess good anxiolytic activity. Processes for the preparation of the amides and pharmaceutical compositions containing them as active ingredient are described and claimed.