baber/WOPTO huggingface dataset:
Patent UA-73048-C2 (UA)
Title: Method for assessing oncological pathology in combined liquid crystal system with stabilizing copolymer layer based on acrylonitrile
Inventor: NYZHNYK VALERII VASYLIOVYCH
IPC: G02F1/00
Filed: 2004-11-01
Abstract: The invention relates to the medicine, in particular, to the pathologic anatomy, and may be used for express diagnosis of the structural non-homogeneity in the biological tissues. The invention is based on the phenomenon of the orientation of liquid crystal (LC) molecules due to interaction of LC molecules with the biological tissues. Therefore, the process of LC molecule interaction with the biological tissues is displayed enabling us to process the physiological information data.
Patent DE-4324061-C3 (DE)
Inventor: CONRAD HORST
IPC: H01R9/26
Filed: 1993-07-17
Granted: 2001-06-21
Abstract: In the case of this distribution block having a plurality of conductor connections (2) which are arranged side by side and contain busbar pieces (4), the mutually facing sides of adjacent busbar pieces (4) are provided with plug contact elements (5) which can be plugged into one another in order to make direct contact, for transverse distribution of the electrical power, so that the transverse connector components, such as transverse distribution rails, space sleeves and the like, which have been normal until now are dispensed with. <IMAGE>
Patent DE-4345274-C5 (DE)
Title: Navigationseinrichtung
Inventor: KLASCHKA RUEDIGER
IPC: G01C21/00
Filed: 1993-03-03
Granted: 2004-02-05
Abstract: Navigationseinrichtung für Luft-,Land- und Wasserfahrzeuge, mit einer Funksignale von Navigationssatelliten auffangenden und aus diesen Lagekoordinaten berechnenden Meßeinheit (32), mit einem frei programmierbaren Rechner (26), mit einem Massenspeicher (28) für Kartendaten, mit einer Anzeigeeinheit (16) und mit einer Anzeige-Treiberkarte (24) , wobei der Rechner (26) auf der Anzeigeeinheit (16) jeweils einen Ausschnitt der im Massenspeicher (28) abgelegten Kartenpixel zur Anzeige bringt, der in Abhängigkeit von den Ausgangssignalen der Me.3einheit (32) gewählt ist, dadurch gekennzeichnet, daß ein Bildsignalspeicher einen Vordergrund-Bildsignalspeicher (154), der über ein drahtloses Modem (158, 160) mit dem Ausgang der Anzeige-Treiberkarte (24) verbunden ist, einen Hintergrund-Bildsignalspeicher (152) sowie einen mit diesen verbundenen Überlagerungskreis (156) aufweist, wobei letzterer das im Hintergrund-Bildsignalspeicher (152) enthaltene Bitmuster mit dem im Vordergrund-Bildsignal- speicher (154) enthaltenen Bitmuster überlagert und die ein Flachdisplay (72) umfassende Anzeigeeinheit (16) gemäß dem so erhaltenen Kombinationsmuster ansteuert.
Patent DE-19752319-C5 (DE)
Title: Ultraschall-Drahtbondingvorrichtung mit einer Einrichtung zum Prüfen einer Bondverbindung und Verfahren zum Prüfen einer mittels eines Ultraschall-Drahtbondingwerkzeugs hergestellten Bondverbindung
Inventor: KELLY GREGG S
IPC: G01N3/08
Filed: 1997-11-26
Granted: 2011-02-17
Abstract: Ultraschall-Drahtbondingvorrichtung mit einer Einrichtung zum Prüfen einer Bondverbindung, umfassend:  – ein Bondingwerkzeug (26; 48), das mittels Ultraschall zum Ultraschallbonden eines Drahts (22; 46) auf ein darunter angeordnetes Substrat (102; 178) antreibbar ist;  – eine Klemme (24; 40) zum Halten des von dem Bondingwerkzeug (26; 48) zu bondenden Drahts (22; 46), wobei die Klemme (24; 40) und das Bondingwerkzeug (26; 48) an einem Bondingkopf angeordnet sind; und  – eine Einrichtung zum Bewegen des Bondingskopfes und der daran angeordneten Klemme (24; 40), während der Draht (22; 46), der gebondet worden ist, mit einer vorbestimmten Kraft festgehalten wird, um zu bestimmen, ob die Bondverbindung dieser Kraft standhält.
Patent DE-50011848-C5 (DE)
Inventor: GANSEN PETER
IPC: B32B27/40
Filed: 2000-09-22
Granted: 2014-12-31
Abstract: Molded polyurethane article comprises a urethane gel(s) and a urethane foam(s) in at least two different areas and bonded by adhesion during production of the urethane. An Independent claim is included for the production of the above article by curing a molded article comprising a PU gel and a PU foam reaction mixture.
Patent DE-102012112242-C5 (DE)
Title: Analyseverfahren für die Analyse von Substanzgemischen
Inventor: GROBOSCH THOMAS
IPC: G01N30/88
Filed: 2012-12-13
Granted: 2021-07-29
Abstract: Analyseverfahren für die Analyse von Substanzgemischen (10), aufweisend die folgenden Schritte:- Vorbereiten des Substanzgemisches (10) für die Analyse,- Erzeugen eines Chromatogramms (20) für das Substanzgemisch (10),- Extraktion der Daten des Chromatogramms (20) zu wenigstens einem Chromatogrammpeak (22), um eine zu analysierende Datenmenge zu reduzieren, wobei die Extraktion der Daten des Chromatogramms (20) für alle Chromatogrammpeaks (22) oberhalb eines definierten Schwellenwertes (24) und in einem vordefinierten Abschnitt (26) erfolgt,- Vergleich der extrahierten Daten wenigstens eines Chromatogrammpeaks (22) mit entsprechenden Daten einer Datenbibliothek (30),- Auswerten des Vergleichs auf Übereinstimmungen der extrahierten Daten des wenigstens einen Chromatogrammpeaks (22) mit den entsprechenden Daten der Datenbibliothek (30), dadurch gekennzeichnet, dass wenigstens die Extraktion der Daten des Chromatogramms (20) und der Vergleich der extrahierten Daten wenigstens eines Chromatogrammpeaks (22) automatisiert durch eine Analysevorrichtung (100) ausgeführt werden und eine HPLC (110) für die Auftrennung des Substanzgemisches (10) eingesetzt wird, wobei das Substanzgemisch (10) in einer Kartusche (112) von Verunreinigungen getrennt und die Kartusche (112) der HPLC (110) spezifisch nur für ein Substanzgemisch (10) eingesetzt wird, wobei weiter die Kartusche (112) als Einwegprodukt ausgebildet ist.
Patent DE-19822143-C9 (DE)
Title: Zylinderkopfdichtung
Inventor: BLEIDT MICHAEL
IPC: F02F11/00
Filed: 1998-05-16
Granted: 2006-05-04
Abstract: Metallische
Zylinderkopfdichtung für eine
Brennkraftmaschine mit einem im eingebauten Zustand dem Zylinderkopf
der Brennkraftmaschine zugewandten Deckblech (1a), das mit einer
oder mehreren, nebeneinander angeordneten Öffnungen (2) entsprechend den
Brennkammern der Brennkraftmaschine versehen ist, wobei das Deckblech
(1a) um jede Öffnung
(2) herum mit Abstand zu dieser unter Belassung eines geraden Blechabschnitts
(3) im Öffnungsrandbereich
eine Sicke (4) aufweist, benachbart zu der um jede Öffnung (2)
herum radial einwärts
von der jeweiligen, dem Zylinderkopf mit ihrem Scheitel abgekehrten
Sicke (4) ein Federwegbegrenzer (9) für die Sicke (4) an einer separaten
Blechlage, der gleichzeitig eine Brennkammerüberhöhung der Dichtung bildet, angeordnet
ist, dadurch gekennzeichnet, daß der
Federwegbegrenzer (9) radial auswärts durch Materialstärkenabnahme
in seiner Dicke derart abnehmend ist, daß die Flächenpressung im Bereich des
Federwegbegrenzers (9) über
dessen Breite unter Betriebsbedingungen im wesentlichen homogen
ist.
Patent RU-2741681-C9 (RU)
Inventor: KIM JAE-HO
IPC: F01C21/10
Filed: 2017-06-25
Granted: 2021-06-08
Abstract: Изобретение относится к пневматическому двигателю лопастного типа с уменьшенным износом лопасти при работе на высоком давлении. Пневмодвигатель (100) содержит корпус с впускным и выпускным отверстиями (102, 104), ротор, с возможностью вращения закрепленный в корпусе, лопасти, вставленные в ротор. Пневмодвигатель (100) дополнительно содержит стопоры лопастей, выполненные выступающими за верхнюю и нижнюю части внутренней стороны лопасти, внутреннее кольцо, сопряженное с верхней центральной частью ротора для выталкивания стопоров наружу для инициирования движения, и упорные подшипники, установленные в верхней и нижней части ротора для предотвращения перемещения стопоров наружу. По меньшей мере на одной, верхней или нижней, части ротора дополнительно установлена крышка, на которой выполнены направляющие пазы для направления лопастей. Изобретение позволяет увеличить выходную мощность двигателя. 3 з.п. ф-лы, 9 ил.
Patent RU-2714160-C9 (RU)
Title: Device for direction of sheep to processing point
Inventor: MIRZOYANTS YURIJ ASHOTOVICH
IPC: A61D11/00
Filed: 2019-04-09
Granted: 2020-07-21
Abstract: FIELD: agriculture; machine building.SUBSTANCE: invention relates to mechanization of sheep breeding, in particular, to a device for direction of sheep to the place of treatment. Device comprises a working fold made in the form of an elastic enclosure, which is a belt with transversely attached bars with straps, which are fixed directly on the body of the moved sheep, at that on both sides at the beginning of the working enclosure there installed are drive reversible drums, winding the ends of the elastic enclosure.EFFECT: invention usage will allow to reduce manual labor and increase efficiency of sheep bathing with preventive and medical purpose.1 cl, 3 dwg
Patent DK-5389-D0 (DK)
Inventor: CARINI DAVID JOHN
IPC: C07D207/337
Filed: 1989-01-06
Abstract: Substituted pyrroles, pyrazoles and triazoles of the formula <CHEM> and their pharmaceutically suitable salts are useful as antihypertensive agents and for treatment of congestive heart failure.
Patent DK-64189-D0 (DK)
Inventor: LARSON DONALD BRUCE
IPC: C09D15/00
Filed: 1989-02-10
Abstract: Improved durability and water repellency are provided to porous substrates by the use of a novel penetrating treatment composition comprising (A) C10 to C22 alkyl acrylate(s) or methacrylate(s) which are non-oxidizing and polymerizable to form homopolymers having a glass transition temperature of about 0 DEG C or less and (B) autoxidative compound(s) which function as polymerization initiator-oxygen scavenger, wherein the weight ratio of (A) to (B) is about 50 to 95 to about 50 to 5.
Patent DK-76085-D0 (DK)
Inventor: CHIESI PAOLO
IPC: A61K47/40
Filed: 1985-02-19
Abstract: New inclusion compounds of 4-hydroxy-2-methyl-N-2-pyridyi-2H-1,2-benzothiazine-3-carboxyamide-1,1-dioxide with α, β or γ cyclodextrins, obtained by reaction of said cydodextrins and said 4-hydroxy-2-methyl-N-2-pyridyl-2H-1,2-benzothiazine-3-carboxyamide-1,1-dioxide in aqueous or water/organic solutions are described. The ratio between 4-hydroxy-2-methyl-N-2-pyridyil-2H-1,2-benzothiazine-1,1-dioxide and the cyclodextrins is comprised between 1:10 and 1:1; preferably, it is about 1:2.5.The compounds of the invention possess high antiinflammatory and analgesic activities, together with a considerably reduced gastrolesive action.
Patent HU-910838-D0 (HU)
Title: Heat-resistant products made of propylene polymer
Inventor: DENICOLA ANTHONY J
IPC: C08L51/06
Filed: 1991-03-14
Abstract: A compsn. comprises (a) a resin, consisting of (i) a polyphenylene ether resin, (ii) a styrene resfn, or (iii) mixts. of (i) and (ii); (b) a styrenic grafted propylene polymer; (c) monoalkenyl aromatic hydrocarbon-conjugated diene block copolymers, hydrogenated prods. or mixts.; and (d) a propylene polymer. Amts. of (a), (b), (c) and (d) are 10-65 (pref. 20-60) wt.%, 5-30 (pref. 10-25) wt.%, 1-15 (pref. 4-12) wt.% and 1-70 (pref. 5-55) wt.% respectively. (iii) has 2-98 wt.% of (ii) based on the total amt. of (i) and (ii). The styrenic monomer content of (b) is 5-70 (pref. 10-55) wt.%. The total amt. of (a) + (b) + (c) + (d) is 100%.
Patent DK-160190-D0 (DK)
Inventor: SCHWAB MARTIN E
IPC: G01N33/577
Filed: 1990-07-03
Abstract: The present invention relates to genes and their encoded proteins which regulate neurite growth and the diagnostic and therapeutic use of such proteins (termed herein neurite growth regulatory factors). The proteins of the present invention include central nervous system myelin associated proteins and metalloproteases associated with glioblastoma cells and other malignant tumors which can metastasize to the brain. The metalloproteases of the invention have value in the treatment of nerve damage and of degenerative disorders of the nervous system. The present invention is also directed to inhibitors of the metalloproteases. Such inhibitors in combination with the CNS myelin associated inhibitory proteins can be used in the treatment of malignant tumors.
Patent DK-163289-D0 (DK)
Inventor: KELLY JAMES DUNCAN
IPC: A61K51/00
Filed: 1989-04-05
Abstract: This invention concerns novel bidentate ligands L having two phosphorus or arsenic atoms. Cationic complexes of the ligands with Technetium-99m, e.g. having the formula [TcO2L2]<+>, are useful for body imaging, particularly myocardial imaging. The ligands have the general formula  Y2QZQY2  where Q is phosphorus or arsenic  Z is a -CC- or -CCC- or -COC- groups, the four groups Y are all C1-C8 saturated hydrocarbon or fluorohydrocarbon with 1-3 ether oxygen atoms.
Patent DK-212086-D0 (DK)
Inventor: MUELLER-RENZOW DIETER
IPC: B65D81/34
Filed: 1986-05-07
Abstract: 1. A paper bag for food to be heated in microwave ovens having at least one overlapping adhered seam characterized in that the bag (1) is made from baking parchment and except for the adhered seam portions (6, 7) is provided internally with a non-adhesive coating of silicones.
Patent DK-250884-D0 (DK)
Inventor: BECKETT CHRISTINE ANNE
IPC: C02F1/52
Filed: 1984-05-22
Abstract: An aqueous slurry of mineral particles, for example calcium carbonate and/or calcium hydroxide, has a mineral solids concentration of at least 40% m/m and contains an agent that maintains the slurry at a pumpable viscosity but that acts as a flocculant upon dilution of the slurry. Suitable agents include cationic and amphoteric polyelectrolytes having nitrogen-containing groups, for example polyamines and dimethyl diallyl ammonium chloride polymers. The slurries may contain other components for example a synthetic hectorite or a dispersing agent such as a polyacrylate, polymethacrylate or polyphosphate. The slurries are useful in papermaking and in the treatment of sewage.
Patent DK-342884-D0 (DK)
Inventor: FISCHER EDGAR
IPC: C08B37/00
Filed: 1984-07-12
Abstract: 1. Process for isolating microbial polysaccharides from adducts thereof with long-chain amines by treating these adducts with monohydric alkanols having 1 to 3 carbon atoms and with basic derivatives of alkali metals dissolved therein, which comprises using an adduct of a tertiary amine having one long-chain and two short-chain aliphatic radicals.
Patent DK-624988-D0 (DK)
Inventor: GREGORY BERTRAM HUBERT
IPC: B32B15/08
Filed: 1988-11-09
Abstract: Substrates are coated by a process which comprises co-extruding onto the substrate, e.g. aluminium foil, a layer of an olefin terpolymer and a layer of polypropylene, the olefin terpolymer being adjacent to the substrate and the polypropylene being adjacent to the olefin terpolymer. The olefin terpolymer is a terpolymer of an olefin, e.g. ethylene, an unsaturated carboxylic acid or anhydride, e.g. acrylic acid, and an unsaturated ester, e.g. methyl acrylate, in which the amount of carboxylic acid or anhydride groups in the terpolymer is at least 3 mole % and the amount of ester groups in the terpolymer is at least 3 mole %.
Patent HU-891841-D0 (HU)
Title: Process for preparation of amino-acid-n-carboxy-anhydrides protected with urethane group
Inventor: FULLER WILLIAM DEAN
IPC: C07D269/02
Filed: 1989-03-03
Abstract: The invention relates to urethane-protected amino acid-N-carboxyanhydride and N-thiocarboxyanhydride compounds which are useful in peptide, polypeptide and protein synthesis. Disclosed herein is the preparation and use of these novel compounds.
Patent HU-9203787-D0 (HU)
Title: Method and tool for dosing liquid product
Inventor: HJERTMAN BIRGER
IPC: A61J1/00
Filed: 1991-06-12
Abstract: PCT No. PCT/SE91/00425 Sec. 371 Date Nov. 30, 1992 Sec. 102(e) Date Nov. 30, 1992 PCT Filed Jun. 12, 1991 PCT Pub. No. WO92/01434 PCT Pub. Date Feb. 6, 1992.Device and method for dosing a liquid product from a tubular container are provided. The container includes a plurality of doses of the liquid product and a plate for pinching the container together locally such that it is divided into a plurality of separate liquid chambers containing a desired dose.
Patent HU-896000-D0 (HU)
Title: Process for producing 2-oxabicyclo 2,2,1 heptane derivatives and pharmaceutical preparatives containing these compounds
Inventor: KLAR ULRICH
IPC: C07C405/00
Filed: 1989-09-07
Abstract: PCT No. PCT/DE89/00585 Sec. 371 Date May 7, 1991 Sec. 102(e) Date May 7, 1991 PCT Filed Sep. 7, 1989 PCT Pub. No. WO90/02740 PCT Pub. Date Mar. 22, 1990.The invention relates to 2-oxabicyclo[2.2.1]heptane derivatives of formula I   <IMAGE> (I)  as well as their enantiomers, in which, e.g., A means -(CH2)n-, (E)- or (Z)-CH=CH-, -C 3BOND C, -O- or -S-, B means hydrogen, C1-C10 alkyl, -OR2, halogen, -C 3BOND N, -N3, -COOR3, R1 means oxygen or a -CH2 group,  <IMAGE>  Z means -(CH2)p-, (E)-CH=CH-, -C 3BOND C-, W means a direct bond, a free or functionally modified hydroxymethylene group or a free or functionally modified  <IMAGE>   in which the OH group can be respectively in alpha- or beta-position, D means a direct bond, a saturated alkylene group with 1-5 C atoms, a branched saturated or a straight-chain of branched unsaturated alkylene group with 2-5 C atoms, E means a direct bond, -C 3BOND C- or -CH=CR7, R8 means hydrogen, C1-C10 alkyl, C3-C10 cycloalkyl, optionally substituted C6-C12 aryl or a 5- or 6-member heterocyclic radical, and if R5 means hydrogen, their salts with physiologically compatible bases, as well as the alpha-, beta- or gamma-cyclodextrin clathrates, as well as the compounds of formula I encapsulated with liposomes, process for their production and the pharmaceutical agents containing these compounds. The compounds are thromboxane antagonists.
Patent NO-862536-D0 (NO)
Inventor: FURUMOTO HORACE
IPC: A61N5/00
Filed: 1986-06-24
Abstract: A tunable dye laser has been found particularly suited to selective photothermolysis. A longer pulse duration which makes the system suitable for a wider range of applications is obtained by modifying the laser to generate a spatially noncoherent beam. The optical system at each end of the laser cell, which may include a lens or spherical mirror, refocuses the aperture of the dye cell near to itself so that substantially all light emanating from the dye cell is returned to the dye cell until the light passes through one of the optic systems as a noncoherent laser beam. A tunable intracavity element tunes the laser across the gain curve of the dye solution. The pulse duration of the laser beam can be selected from a range of durations up to about one millisecond.
Patent NO-872860-D0 (NO)
Inventor: HALTER HARTMUT
IPC: B29C48/10
Filed: 1987-07-09
Abstract: The apparatus for making a plastic foil by blowing into an extruded thermoplastic tube comprises a rotating extruder head with at least one circular outlet gap for the plastic tube, an air blowing device and a cooling device including two circular cooling air outlets surrounding the circular outlet gap of the extruder head. Cooling air duct structures are connected to a common cooling air blower. A cooling air distributor unit has a cooling air feed device for each cooling air outlet. The cooling air feed devices are aerodynamically independent of each other. The aerodynamically independent cooling air feed devices are connected to a common cooling air duct structure. Each cooling air feed device has an air flow control device.
Patent NO-875255-D0 (NO)
Inventor: WORDEN DONALD G
IPC: B65B51/22
Filed: 1987-12-16
Abstract: Improved form, fill, and seal machine (10) for making aseptic sealed packages (31) incorporating a plurality of web guiding rollers (142, 144) and flanges for manipulating a continuously fed polyfoil web (20) into a longitudinal tube (22) having a triangular cross section and opposing superimposed web edges that are sealed together to form the longitudinal seal in the tube. Web advance may be continuous or intermittent. Induction heating is used to longitudinally seal the edges of the web together to form a tube.
Patent NO-883408-D0 (NO)
Inventor: MOHR DONALD H
IPC: B01J29/90
Filed: 1988-08-01
Abstract: The present invention is a process for regenerating a large-pore zeolitic catalyst that has been deactivated by the formation of Group VIII metal agglomerates on the catalyst surface. In the process, the Group VIII metal agglomerates are redispersed to produce agglomerates of small size. It comprises an oxychlorination step, a nitrogen purge step and a reduction step.
Patent NO-884440-D0 (NO)
Inventor: JOHANSSON LEIF
IPC: A23D7/00
Filed: 1988-10-06
Abstract: A low calorie margarine and a method of making same, which margarine has a fat content of 19-38% and manufactured by emulsification of a water phase in a fat phase to directly provide a water-in-oil emulsion, in which the water phase, as a main ingredient, comprises a protein concentrate, and in which the fat phase comprises 70-100% cured (hardened) fat and the remaining fat being uncured fat, and in which the water phase comprises a heat treated and ripened solution in skim milk, butter milk, whey, water or any mixture thereof of between 2 and 6% by weight of starch and between 0.02 and 0.05% by weight of an emulsifier, which solution, after having been heat treated and ripened, is mixed with about 55-60% by weight of a protein concentrate having a protein content of 12.8%, and the fat phase is composed of fats and between 0.75 and 1.25% by weight of a known emulsifier ordinarily used in this connection, and in which water-in-oil emulsion obtained by the emulsification of the water phase in the fat phase is pasteurized, cooled and packed.
Patent NO-885213-D0 (NO)
Inventor: FULBERTH WERNER
IPC: A61K47/30
Filed: 1988-11-23
Abstract: Stabilised compounds of the formula I 
<IMAGE>
 in which R, R<1>, R<2>, R<3>, R<4> and R<5> have the stated meanings, and process for the preparation thereof are described. The stabilised compounds are suitable for the production of pharmaceutical preparations.
Patent NO-892435-D0 (NO)
Inventor: GRELL WOLFGANG
IPC: C07D513/04
Filed: 1989-06-13
Abstract: The present invention relates to new 4,5,7,8-tetrahydro-6H-thiazolo[5,4-d]azepines of general formula II <IMAGE> (II)  wherein the substituents are defined herein below, which compounds have valuable pharmacological properties, namely selective effects on the dopaminergic system which are achieved by stimulating (predominantly D2) dopamine receptors.
Patent NO-893694-D0 (NO)
Inventor: MIGNANI GERARD
IPC: C08G18/67
Filed: 1989-09-15
Abstract: The present invention relates to polymers active in nonlinear optics, characterised in that they are obtained by reaction of a first difunctional compound with a second difunctional compound, at least one of the difunctional compounds comprising a charge transfer polar group containing at least one electron-acceptor group, at least one electron-donor group (D) and in that the functional groups which are reactive in the case of the polymerisation are carried by the electron-donor group(s).
Patent NO-900917-D0 (NO)
Inventor: CRAWLEY GRAHAM CHARLES
IPC: C07D241/42
Filed: 1990-02-27
Abstract: The invention concerns a heterocyclic cycloalkane of the formula I   <CHEM> wherein Q is an optionally substituted 6-membered monocyclic or 10-membered bicyclic heterocyclic moiety containing one or two nitrogen atoms; A is (1-6C)alkylene, (3-6C)alkenylene, (3-6C)alkynylene or cyclo(3-6C)alkylene;  X is oxy, thio, sulphinyl, sulphonyl or imino; Ar is phenylene which may optionally bear one or two substituents or Ar is an optionally substituted 6-membered heterocyclene moiety containing up to three nitrogen atoms; R<1> is hydrogen, (1-6C)alkyl, (3-6C)alkenyl, (3-6C)alkynyl, cyano-(1-4C)alkyl or (2-4C)alkanoyl, or optionally substituted benzoyl; and R<2> and R<3> together form a (3-6C)alkylene group which, together with the carbon atom to which R<2> and R<3> are attached, defines a ring having 4 to 7 ring atoms, and which ring may bear one or two substituents;  or a pharmaceutically-acceptable salt thereof. The compounds of the invention are inhibitors of the enzyme 5-lipoxygenase.